CVE-2021-4135

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel through 5.15.2, mwifiex_usb_recv in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker (who can connect a crafted USB device) to cause a denial of service (skb_over_panic).(CVE-2021-43976)

In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-154177719References: Upstream kernel(CVE-2021-0941)

In __f2fs_setxattr in fs/f2fs/xattr.c in the Linux kernel through 5.15.11, there is an out-of-bounds memory access when an inode has an invalid last xattr entry.(CVE-2021-45469)

A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object.(CVE-2021-44733)

In ufshcd_eh_device_reset_handler of ufshcd.c, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-194696049References: Upstream kernel(CVE-2021-39657)

A flaw memory leak in the Linux kernel s eBPF for the Simulated networking device driver in the way user uses BPF for the device such that function nsim_map_alloc_elem being called. A local user could use this flaw to get unauthorized access to some data.(CVE-2021-4135)

There are some measures taken for avoiding to pile up too much data, but those can be bypassed by the guest: There is a timeout how long the client side of an interface can stop consuming new packets before it is assumed to have stalled, but this timeout is rather long. Using a UDP connection on a fast interface can easily accumulate gigabytes of data in that time.(CVE-2021-28715)

The timeout could even never trigger if the guest manages to have only one free slot in its RX queue ring page and the next package would require more than one free slot, which may be the case when using GSO, XDP, or software hashing.(CVE-2021-28714)

Running PV backends in driver domains has one primary security advantage, if a driver domain gets compromised, it doesn't have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. (CVE-2021-28713)

Running PV backends in driver domains has one primary security advantage, if a driver domain gets compromised, it doesn't have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. (CVE-2021-28712)

Running PV backends in driver domains has one primary security advantage, if a driver domain gets compromised, it doesn't have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. (CVE-2021-28711)

A memory leak vulnerability was found in the Linux kernel's eBPF for the Simulated networking device driver in the way user uses BPF for the device such that function nsim_map_alloc_elem being called. A local user could use this flaw to get unauthorized access to some data.

This kernel update is based on upstream 5.15.11 and fixes at least the following security issues:

netdevsim: Zero-initialize memory for new map's value in function nsim_bpf_map_alloc (CVE-2021-4135).

Potentially malicious XEN PV backends can cause guest DoS due to unhardened frontends in the guests, even though this ought to have been prevented by containing them within a driver domain. This update fixes the issue tracked as XSA-391: blkfront (CVE-2021-28711), netfront (CVE-2021-28712), hvc_xen (CVE-2021-28713).

The Linux kernel's xen-netback backend driver can be forced by guests to queue arbitrary amounts of network data, finally causing an out of memory situation in the domain the backend is running in (usually dom0). This update fixes the issues tracked as XSA-392 (CVE-2021-28714, CVE-2021-28715).

In __f2fs_setxattr in fs/f2fs/xattr.c in the Linux kernel through 5.15.11, there is an out-of-bounds memory access when an inode has an invalid last xattr entry (CVE-2021-45469).

rds: memory leak in __rds_conn_create() (CVE-2021-45480).

In addition to the upstream changes, we also have added the following fixes:

• ALSA: hda/hdmi: Disable silent stream on GLK
• arm64: vdso32: require CROSS_COMPILE_COMPAT for gcc+bfd
• ext4: check for inconsistent extents between index and leaf block
• ext4: check for out-of-order index extents in ext4_valid_extent_entries()
• ext4: prevent partial update of the extent blocks
• HID: intel-ish-hid: ipc: Specify no cache snooping on TGL and ADL
• HID: potential dereference of null pointer
• iwlwifi: mvm: Increase the scan timeout guard to 30 seconds
• KVM: VMX: clear vmx_x86_ops.sync_pir_to_irr if APICv is disabled
• net: amd-xgbe: Add Support for Yellow Carp Ethernet device
• net: usb: lan78xx: add Allied Telesis AT29M2-AF
• netfs: fix parameter of cleanup()
• NFSD: Fix READDIR buffer overflow
• PM: sleep: Fix error handling in dpm_prepare()
• restored legacy NTLM support in cifs (mga#29641)
• revert: "rtw88: 8821c: disable the ASPM of RTL8821CE"
• rtw88: add quirk to disable pci caps on HP 250 G7 Notebook PC
• rtw88: Disable PCIe ASPM while doing NAPI poll on 8821CE
• rtw88: don't check CRC of VHT-SIG-B in 802.11ac signal
• rtw88: 8822c: update rx settings to prevent potential hw deadlock
• rtw89: 8852a: correct bit definition of dfs_en

For other upstream fixes, see the referenced changelogs.

This kernel-linus update is based on upstream 5.15.11 and fixes at least the following security issues:

netdevsim: Zero-initialize memory for new map's value in function nsim_bpf_map_alloc (CVE-2021-4135).

Potentially malicious XEN PV backends can cause guest DoS due to unhardened frontends in the guests, even though this ought to have been prevented by containing them within a driver domain. This update fixes the issue tracked as XSA-391: blkfront (CVE-2021-28711), netfront (CVE-2021-28712), hvc_xen (CVE-2021-28713).

The Linux kernel's xen-netback backend driver can be forced by guests to queue arbitrary amounts of network data, finally causing an out of memory situation in the domain the backend is running in (usually dom0). This update fixes the issues tracked as XSA-392 (CVE-2021-28714, CVE-2021-28715).

rds: memory leak in __rds_conn_create() (CVE-2021-45480).

For other upstream fixes, see the referenced changelogs.

The SUSE Linux Enterprise 15 SP3 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-0185: Incorrect param length parsing in legacy_parse_param which could have led to a local privilege escalation (bsc#1194517).
• CVE-2022-0322: Fixed a denial of service in SCTP sctp_addto_chunk (bsc#1194985).
• CVE-2021-4197: Fixed a cgroup issue where lower privileged processes could write to fds of lower privileged ones that could lead to privilege escalation (bsc#1194302).
• CVE-2021-46283: nf_tables_newset in net/netfilter/nf_tables_api.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and general protection fault) because of the missing initialization for nft_set_elem_expr_alloc. A local user can set a netfilter table expression in their own namespace (bnc#1194518).
• CVE-2021-4135: Fixed an information leak in the nsim_bpf_map_alloc function (bsc#1193927).
• CVE-2021-4202: Fixed a race condition during NFC device remove which could lead to a use-after-free memory corruption (bsc#1194529)
• CVE-2021-4083: A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allowed a local user to crash the system or escalate their privileges on the system. (bnc#1193727).
• CVE-2021-4149: Fixed a locking condition in btrfs which could lead to system deadlocks (bsc#1194001).
• CVE-2021-45485: In the IPv6 implementation net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses (bnc#1194094).
• CVE-2021-45486: In the IPv4 implementation net/ipv4/route.c has an information leak because the hash table is very small (bnc#1194087).

The following non-security bugs were fixed:

• ACPI: APD: Check for NULL pointer after calling devm_ioremap() (git-fixes).
• ACPI: Add stubs for wakeup handler functions (git-fixes).
• ACPI: scan: Create platform device for BCM4752 and LNV4752 ACPI nodes (git-fixes).
• ALSA: PCM: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: ctl: Fix copy of updated id with element read/write (git-fixes).
• ALSA: drivers: opl3: Fix incorrect use of vp->state (git-fixes).
• ALSA: hda/hdmi: Disable silent stream on GLK (git-fixes).
• ALSA: hda/realtek - Add headset Mic support for Lenovo ALC897 platform (git-fixes).
• ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master after reboot from Windows (git-fixes).
• ALSA: hda/realtek: Add a quirk for HP OMEN 15 mute LED (git-fixes).
• ALSA: hda/realtek: Add quirk for ASRock NUC Box 1100 (git-fixes).
• ALSA: hda/realtek: Amp init fixup for HP ZBook 15 G6 (git-fixes).
• ALSA: hda/realtek: Fix quirk for Clevo NJ51CU (git-fixes).
• ALSA: hda/realtek: Fix quirk for TongFang PHxTxX1 (git-fixes).
• ALSA: hda/realtek: Fixes HP Spectre x360 15-eb1xxx speakers (git-fixes).
• ALSA: hda/realtek: Headset fixup for Clevo NH77HJQ (git-fixes).
• ALSA: hda: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: hda: Make proper use of timecounter (git-fixes).
• ALSA: jack: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: jack: Check the return value of kstrdup() (git-fixes).
• ALSA: oss: fix compile error when OSS_DEBUG is enabled (git-fixes).
• ALSA: pcm: oss: Fix negative period/buffer sizes (git-fixes).
• ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*() (git-fixes).
• ALSA: pcm: oss: Limit the period size to 16MB (git-fixes).
• ALSA: usb-audio: Drop superfluous '0' in Presonus Studio 1810c's ID (git-fixes).
• ALSA: usb-audio: Line6 HX-Stomp XL USB_ID for 48k-fixed quirk (git-fixes).
• ASoC: codecs: wcd934x: handle channel mappping list correctly (git-fixes).
• ASoC: codecs: wcd934x:…

The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-0185: Incorrect param length parsing in legacy_parse_param which could have led to a local privilege escalation (bsc#1194517).
• CVE-2022-0322: Fixed a denial of service in SCTP sctp_addto_chunk (bsc#1194985).
• CVE-2021-4197: Fixed a cgroup issue where lower privileged processes could write to fds of lower privileged ones that could lead to privilege escalation (bsc#1194302).
• CVE-2021-46283: nf_tables_newset in net/netfilter/nf_tables_api.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and general protection fault) because of the missing initialization for nft_set_elem_expr_alloc. A local user can set a netfilter table expression in their own namespace (bnc#1194518).
• CVE-2021-4135: Fixed an information leak in the nsim_bpf_map_alloc function (bsc#1193927).
• CVE-2021-4202: Fixed a race condition during NFC device remove which could lead to a use-after-free memory corruption (bsc#1194529)
• CVE-2021-4083: A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allowed a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4 (bnc#1193727).
• CVE-2021-4149: Fixed a locking condition in btrfs which could lead to system deadlocks (bsc#1194001).
• CVE-2021-45485: In the IPv6 implementation in net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses (bnc#1194094).
• CVE-2021-45486: In the IPv4 implementation in net/ipv4/route.c has an information leak because the hash table is very small (bnc#1194087).

The following non-security bugs were fixed:

• ACPI: APD: Check for NULL pointer after calling devm_ioremap() (git-fixes).
• ACPI: Add stubs for wakeup handler functions (git-fixes).
• ACPI: scan: Create platform device for BCM4752 and LNV4752 ACPI nodes (git-fixes).
• ALSA: PCM: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: ctl: Fix copy of updated id with element read/write (git-fixes).
• ALSA: drivers: opl3: Fix incorrect use of vp->state (git-fixes).
• ALSA: hda/hdmi: Disable silent stream on GLK (git-fixes).
• ALSA: hda/realtek - Add headset Mic support for Lenovo ALC897 platform (git-fixes).
• ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master after reboot from Windows (git-fixes).
• ALSA: hda/realtek: Add a quirk for HP OMEN 15 mute LED (git-fixes).
• ALSA: hda/realtek: Add quirk for ASRock NUC Box 1100 (git-fixes).
• ALSA: hda/realtek: Amp init fixup for HP ZBook 15 G6 (git-fixes).
• ALSA: hda/realtek: Fix quirk for Clevo NJ51CU (git-fixes).
• ALSA: hda/realtek: Fix quirk for TongFang PHxTxX1 (git-fixes).
• ALSA: hda/realtek: Fixes HP Spectre x360 15-eb1xxx speakers (git-fixes).
• ALSA: hda/realtek: Headset fixup for Clevo NH77HJQ (git-fixes).
• ALSA: hda: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: hda: Make proper use of timecounter (git-fixes).
• ALSA: jack: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: jack: Check the return value of kstrdup() (git-fixes).
• ALSA: oss: fix compile error when OSS_DEBUG is enabled (git-fixes).
• ALSA: pcm: oss: Fix negative period/buffer sizes (git-fixes).
• ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*() (git-fixes).
• ALSA: pcm: oss: Limit the period size to 16MB (git-fixes).
• ALSA: usb-audio: Drop superfluous '0' in Presonus Studio 1810c's ID (git-fixes).
• ALSA: usb-audio: Line6 HX-Stomp XL USB_ID for 48k-fixed quirk (git-fixes).
• ASoC: codecs: wcd934x: handle channel mappping…

The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-0435: Fixed remote stack overflow in net/tipc module that validate domain record count on input (bsc#1195254).
• CVE-2022-0330: Fixed flush TLBs before releasing backing store (bsc#1194880).
• CVE-2021-45486: Fixed an information leak because the hash table is very small in net/ipv4/route.c (bnc#1194087).
• CVE-2021-45095: Fixed refcount leak in pep_sock_accept in net/phonet/pep.c (bnc#1193867).
• CVE-2021-44733: Fixed a use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem, that could have occured because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object (bnc#1193767).
• CVE-2021-43976: Fixed a flaw that could allow an attacker (who can connect a crafted USB device) to cause a denial of service. (bnc#1192847)
• CVE-2021-43975: Fixed a flaw in hw_atl_utils_fw_rpc_wait that could allow an attacker (who can introduce a crafted device) to trigger an out-of-bounds write via a crafted length value. (bsc#1192845)
• CVE-2021-4202: Fixed NFC race condition by adding NCI_UNREG flag (bsc#1194529).
• CVE-2021-4197: Use cgroup open-time credentials for process migraton perm checks (bsc#1194302).
• CVE-2021-4159: Fixed kernel ptr leak vulnerability via BPF in coerce_reg_to_size (bsc#1194227).
• CVE-2021-4149: Fixed btrfs unlock newly allocated extent buffer after error (bsc#1194001).
• CVE-2021-4135: Fixed zero-initialize memory inside netdevsim for new map's value in function nsim_bpf_map_alloc (bsc#1193927).
• CVE-2021-4083: Fixed a read-after-free memory flaw inside the garbage collection for Unix domain socket file handlers when users call close() and fget() simultaneouslyand can potentially trigger a race condition (bnc#1193727).
• CVE-2021-4002: Fixed incorrect TLBs flush in hugetlbfs after huge_pmd_unshare (bsc#1192946).
• CVE-2021-39657: Fixed out of bounds read due to a missing bounds check in ufshcd_eh_device_reset_handler of ufshcd.c. This could lead to local information disclosure with System execution privileges needed (bnc#1193864).
• CVE-2021-39648: Fixed possible disclosure of kernel heap memory due to a race condition in gadget_dev_desc_UDC_show of configfs.c. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation (bnc#1193861).
• CVE-2021-3564: Fixed double-free memory corruption in the Linux kernel HCI device initialization subsystem that could have been used by attaching malicious HCI TTY Bluetooth devices. A local user could use this flaw to crash the system (bnc#1186207).
• CVE-2021-33098: Fixed a potential denial of service in Intel(R) Ethernet ixgbe driver due to improper input validation. (bsc#1192877)
• CVE-2021-28715: Fixed issue with xen/netback to do not queue unlimited number of packages (XSA-392) (bsc#1193442).
• CVE-2021-28714: Fixed issue with xen/netback to handle rx queue stall detection (XSA-392) (bsc#1193442).
• CVE-2021-28713: Fixed issue with xen/console to harden hvc_xen against event channel storms (XSA-391) (bsc#1193440).
• CVE-2021-28712: Fixed issue with xen/netfront to harden netfront against event channel storms (XSA-391) (bsc#1193440).
• CVE-2021-28711: Fixed issue with xen/blkfront to harden blkfront against event channel storms (XSA-391) (bsc#1193440).
• CVE-2021-0935: Fixed possible out of bounds write in ip6_xmit of ip6_output.c due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192032).
• CVE-2021-0920: Fixed a local privilege escalation due to an use after free bug in unix_gc (bsc#1193731).
• CVE-2020-27820: Fixed a vulnerability where a use-after-frees in nouveau's postclose() handler could happen if removing device (bsc#1179599).
• CVE-2019-15126: Fixed a vulnerability in Broadcom…

The SUSE Linux Enterprise 15 SP3 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-0185: Incorrect param length parsing in legacy_parse_param which could have led to a local privilege escalation (bsc#1194517).
• CVE-2022-0322: Fixed a denial of service in SCTP sctp_addto_chunk (bsc#1194985).
• CVE-2021-4197: Fixed a cgroup issue where lower privileged processes could write to fds of lower privileged ones that could lead to privilege escalation (bsc#1194302).
• CVE-2021-46283: nf_tables_newset in net/netfilter/nf_tables_api.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and general protection fault) because of the missing initialization for nft_set_elem_expr_alloc. A local user can set a netfilter table expression in their own namespace (bnc#1194518).
• CVE-2021-4135: Fixed an information leak in the nsim_bpf_map_alloc function (bsc#1193927).
• CVE-2021-4202: Fixed a race condition during NFC device remove which could lead to a use-after-free memory corruption (bsc#1194529)
• CVE-2021-4083: A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allowed a local user to crash the system or escalate their privileges on the system. (bnc#1193727).
• CVE-2021-4149: Fixed a locking condition in btrfs which could lead to system deadlocks (bsc#1194001).
• CVE-2021-45485: In the IPv6 implementation net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses (bnc#1194094).
• CVE-2021-45486: In the IPv4 implementation net/ipv4/route.c has an information leak because the hash table is very small (bnc#1194087).

The following non-security bugs were fixed:

• ACPI: APD: Check for NULL pointer after calling devm_ioremap() (git-fixes).
• ACPI: Add stubs for wakeup handler functions (git-fixes).
• ACPI: scan: Create platform device for BCM4752 and LNV4752 ACPI nodes (git-fixes).
• ALSA: PCM: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: ctl: Fix copy of updated id with element read/write (git-fixes).
• ALSA: drivers: opl3: Fix incorrect use of vp->state (git-fixes).
• ALSA: hda/hdmi: Disable silent stream on GLK (git-fixes).
• ALSA: hda/realtek - Add headset Mic support for Lenovo ALC897 platform (git-fixes).
• ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master after reboot from Windows (git-fixes).
• ALSA: hda/realtek: Add a quirk for HP OMEN 15 mute LED (git-fixes).
• ALSA: hda/realtek: Add quirk for ASRock NUC Box 1100 (git-fixes).
• ALSA: hda/realtek: Amp init fixup for HP ZBook 15 G6 (git-fixes).
• ALSA: hda/realtek: Fix quirk for Clevo NJ51CU (git-fixes).
• ALSA: hda/realtek: Fix quirk for TongFang PHxTxX1 (git-fixes).
• ALSA: hda/realtek: Fixes HP Spectre x360 15-eb1xxx speakers (git-fixes).
• ALSA: hda/realtek: Headset fixup for Clevo NH77HJQ (git-fixes).
• ALSA: hda: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: hda: Make proper use of timecounter (git-fixes).
• ALSA: jack: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: jack: Check the return value of kstrdup() (git-fixes).
• ALSA: oss: fix compile error when OSS_DEBUG is enabled (git-fixes).
• ALSA: pcm: oss: Fix negative period/buffer sizes (git-fixes).
• ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*() (git-fixes).
• ALSA: pcm: oss: Limit the period size to 16MB (git-fixes).
• ALSA: usb-audio: Drop superfluous '0' in Presonus Studio 1810c's ID (git-fixes).
• ALSA: usb-audio: Line6 HX-Stomp XL USB_ID for 48k-fixed quirk (git-fixes).
• ASoC: codecs: wcd934x: handle channel mappping list correctly (git-fixes).
• ASoC: codecs: wcd934x:…

The SUSE Linux Enterprise 15 SP2 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-0185: Incorrect param length parsing in legacy_parse_param which could have led to a local privilege escalation (bsc#1194517).
• CVE-2022-0322: Fixed a denial of service in SCTP sctp_addto_chunk (bsc#1194985).
• CVE-2021-44733: Fixed a use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel that occured because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object (bnc#1193767).
• CVE-2021-4197: Fixed a cgroup issue where lower privileged processes could write to fds of lower privileged ones that could lead to privilege escalation (bsc#1194302).
• CVE-2021-4135: Fixed an information leak in the nsim_bpf_map_alloc function (bsc#1193927).
• CVE-2021-4202: Fixed a race condition during NFC device remove which could lead to a use-after-free memory corruption (bsc#1194529)
• CVE-2021-4083: A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allowed a local user to crash the system or escalate their privileges on the system. (bnc#1193727).
• CVE-2021-4149: Fixed a locking condition in btrfs which could lead to system deadlocks (bsc#1194001).
• CVE-2021-45485: The IPv6 implementation in net/ipv6/output_core.c had an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses (bnc#1194094).
• CVE-2021-45486: The IPv4 implementation in net/ipv4/route.c had an information leak because the hash table is very small (bnc#1194087).
• CVE-2021-4001: A race condition was found in the Linux kernel's ebpf verifier between bpf_map_update_elem and bpf_map_freeze due to a missing lock in kernel/bpf/syscall.c. In this flaw, a local user with a special privilege (cap_sys_admin or cap_bpf) can modify the frozen mapped address space. (bnc#1192990).
• CVE-2021-28715: Guest can force Linux netback driver to hog large amounts of kernel memory. Incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is ready to process them. There are some measures taken for avoiding to pile up too much data, but those can be bypassed by the guest: There was a timeout how long the client side of an interface can stop consuming new packets before it is assumed to have stalled, but this timeout is rather long (60 seconds by default). Using a UDP connection on a fast interface can easily accumulate gigabytes of data in that time. (CVE-2021-28715) The timeout could even never trigger if the guest manages to have only one free slot in its RX queue ring page and the next package would require more than one free slot, which may be the case when using GSO, XDP, or software hashing. ()
• CVE-2021-28714: Guest can force Linux netback driver to hog large amounts of kernel memory. Incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is ready to process them. There are some measures taken for avoiding to pile up too much data, but those can be bypassed by the guest: There was a timeout how long the client side of an interface can stop consuming new packets before it is assumed to have stalled, but this timeout is rather long (60 seconds by default). Using a UDP connection on a fast interface can easily accumulate gigabytes of data in that time. (CVE-2021-28715) The timeout could even never trigger if the guest manages to have only one free slot in its RX queue ring page and the next package would require more than one free slot, which may be the case when using GSO, XDP, or software hashing (bnc#1193442).
• CVE-2021-28713: Rogue backends can cause DoS of guests via high frequency…

The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-0185: Incorrect param length parsing in legacy_parse_param which could have led to a local privilege escalation (bsc#1194517).
• CVE-2022-0322: Fixed a denial of service in SCTP sctp_addto_chunk (bsc#1194985).
• CVE-2021-4197: Fixed a cgroup issue where lower privileged processes could write to fds of lower privileged ones that could lead to privilege escalation (bsc#1194302).
• CVE-2021-46283: nf_tables_newset in net/netfilter/nf_tables_api.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and general protection fault) because of the missing initialization for nft_set_elem_expr_alloc. A local user can set a netfilter table expression in their own namespace (bnc#1194518).
• CVE-2021-4135: Fixed an information leak in the nsim_bpf_map_alloc function (bsc#1193927).
• CVE-2021-4202: Fixed a race condition during NFC device remove which could lead to a use-after-free memory corruption (bsc#1194529)
• CVE-2021-4083: A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allowed a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4 (bnc#1193727).
• CVE-2021-4149: Fixed a locking condition in btrfs which could lead to system deadlocks (bsc#1194001).
• CVE-2021-45485: In the IPv6 implementation in net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses (bnc#1194094).
• CVE-2021-45486: In the IPv4 implementation in net/ipv4/route.c has an information leak because the hash table is very small (bnc#1194087).

The following non-security bugs were fixed:

• ACPI: APD: Check for NULL pointer after calling devm_ioremap() (git-fixes).
• ACPI: Add stubs for wakeup handler functions (git-fixes).
• ACPI: scan: Create platform device for BCM4752 and LNV4752 ACPI nodes (git-fixes).
• ALSA: PCM: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: ctl: Fix copy of updated id with element read/write (git-fixes).
• ALSA: drivers: opl3: Fix incorrect use of vp->state (git-fixes).
• ALSA: hda/hdmi: Disable silent stream on GLK (git-fixes).
• ALSA: hda/realtek - Add headset Mic support for Lenovo ALC897 platform (git-fixes).
• ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master after reboot from Windows (git-fixes).
• ALSA: hda/realtek: Add a quirk for HP OMEN 15 mute LED (git-fixes).
• ALSA: hda/realtek: Add quirk for ASRock NUC Box 1100 (git-fixes).
• ALSA: hda/realtek: Amp init fixup for HP ZBook 15 G6 (git-fixes).
• ALSA: hda/realtek: Fix quirk for Clevo NJ51CU (git-fixes).
• ALSA: hda/realtek: Fix quirk for TongFang PHxTxX1 (git-fixes).
• ALSA: hda/realtek: Fixes HP Spectre x360 15-eb1xxx speakers (git-fixes).
• ALSA: hda/realtek: Headset fixup for Clevo NH77HJQ (git-fixes).
• ALSA: hda: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: hda: Make proper use of timecounter (git-fixes).
• ALSA: jack: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• ALSA: jack: Check the return value of kstrdup() (git-fixes).
• ALSA: oss: fix compile error when OSS_DEBUG is enabled (git-fixes).
• ALSA: pcm: oss: Fix negative period/buffer sizes (git-fixes).
• ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*() (git-fixes).
• ALSA: pcm: oss: Limit the period size to 16MB (git-fixes).
• ALSA: usb-audio: Drop superfluous '0' in Presonus Studio 1810c's ID (git-fixes).
• ALSA: usb-audio: Line6 HX-Stomp XL USB_ID for 48k-fixed quirk (git-fixes).
• ASoC: codecs: wcd934x: handle channel mappping…

The SUSE Linux Enterprise 15 SP3 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-4083: Fixed race condition in Unix domain socket garbage collection that could lead to read memory after free (bsc#1193727).
• CVE-2021-4135: Fixed an information leak in the nsim_bpf_map_alloc function (bsc#1193927).
• CVE-2021-4149: Fixed improper lock operation in btrfs that allowed users to crash the kernel or deadlock the system (bsc#1194001).
• CVE-2021-4197: Fixed a cgroup issue where lower privileged processes could write to fds of lower privileged ones that could lead to privilege escalation (bsc#1194302).
• CVE-2021-4202: Fixed race condition in nci_request() that could cause use-after-free (bsc#1194529).
• CVE-2021-44733: Fixed a use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel that occured because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object (bnc#1193767).
• CVE-2021-46283: Fixed missing initialization in nf_tables_newset in net/netfilter/nf_tables_api.c that could cause a denial of service (bnc#1194518).
• CVE-2022-0185: Incorrect param length parsing in legacy_parse_param which could have led to a local privilege escalation (bsc#1194517).
• CVE-2022-0322: Fixed a denial of service in SCTP sctp_addto_chunk (bsc#1194985).

The following non-security bugs were fixed:

• acpi: APD: Check for NULL pointer after calling devm_ioremap() (git-fixes).
• acpi: Add stubs for wakeup handler functions (git-fixes).
• acpi: scan: Create platform device for BCM4752 and LNV4752 ACPI nodes (git-fixes).
• alsa: PCM: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• alsa: ctl: Fix copy of updated id with element read/write (git-fixes).
• alsa: drivers: opl3: Fix incorrect use of vp->state (git-fixes).
• alsa: hda/hdmi: Disable silent stream on GLK (git-fixes).
• alsa: hda/realtek - Add headset Mic support for Lenovo ALC897 platform (git-fixes).
• alsa: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master after reboot from Windows (git-fixes).
• alsa: hda/realtek: Add a quirk for HP OMEN 15 mute LED (git-fixes).
• alsa: hda/realtek: Add quirk for ASRock NUC Box 1100 (git-fixes).
• alsa: hda/realtek: Amp init fixup for HP ZBook 15 G6 (git-fixes).
• alsa: hda/realtek: Fix quirk for Clevo NJ51CU (git-fixes).
• alsa: hda/realtek: Fix quirk for TongFang PHxTxX1 (git-fixes).
• alsa: hda/realtek: Fixes HP Spectre x360 15-eb1xxx speakers (git-fixes).
• alsa: hda/realtek: Headset fixup for Clevo NH77HJQ (git-fixes).
• alsa: hda: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• alsa: hda: Make proper use of timecounter (git-fixes).
• alsa: jack: Add missing rwsem around snd_ctl_remove() calls (git-fixes).
• alsa: jack: Check the return value of kstrdup() (git-fixes).
• alsa: oss: fix compile error when OSS_DEBUG is enabled (git-fixes).
• alsa: pcm: oss: Fix negative period/buffer sizes (git-fixes).
• alsa: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*() (git-fixes).
• alsa: pcm: oss: Limit the period size to 16MB (git-fixes).
• alsa: usb-audio: Drop superfluous '0' in Presonus Studio 1810c's ID (git-fixes).
• alsa: usb-audio: Line6 HX-Stomp XL USB_ID for 48k-fixed quirk (git-fixes).
• amd/display: downgrade validation failure log level (git-fixes).
• arm64: Kconfig: add a choice for endianness (jsc#SLE-23432).
• asoc: codecs: wcd934x: handle channel mappping list correctly (git-fixes).
• asoc: codecs: wcd934x: return correct value from mixer put (git-fixes).
• asoc: codecs: wcd934x: return error code correctly from hw_params (git-fixes).
• asoc: codecs: wsa881x: fix return values from kcontrol put (git-fixes).
• asoc: cs42l42: Correct configuring of switch inversion from ts-inv (git-fixes).
• asoc: cs42l42: Disable regulators if probe fails (git-fixes).
• asoc: cs42l42: Use device_property API instead of of_property (git-fixes).
• asoc: fsl_asrc: refine the…

The SUSE Linux Enterprise 15 SP2 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-4083: Fixed race condition in Unix domain socket garbage collection that could lead to read memory after free (bsc#1193727).
• CVE-2021-4135: Fixed an information leak in the nsim_bpf_map_alloc function (bsc#1193927).
• CVE-2021-4149: Fixed improper lock operation in btrfs that allowed users to crash the kernel or deadlock the system (bsc#1194001).
• CVE-2021-4197: Fixed a cgroup issue where lower privileged processes could write to fds of lower privileged ones that could lead to privilege escalation (bsc#1194302).
• CVE-2021-4202: Fixed race condition in nci_request() that could cause use-after-free (bsc#1194529).
• CVE-2021-44733: Fixed a use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel that occured because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object (bnc#1193767).
• CVE-2021-45485: Fixed an information leak because of certain use of a hash table which use IPv6 source addresses (bsc#1194094).
• CVE-2021-45486: Fixed an information leak because the hash table is very small in net/ipv4/route.c (bnc#1194087).
• CVE-2022-0185: Incorrect param length parsing in legacy_parse_param which could have led to a local privilege escalation (bsc#1194517).
• CVE-2022-0322: Fixed a denial of service in SCTP sctp_addto_chunk (bsc#1194985).

The following non-security bugs were fixed:

• ext4: Avoid trim error on fs with small groups (bsc#1191271).
• fget: clarify and improve __fget_files() implementation (bsc#1193727).
• kabi/severities: Add a kabi exception for drivers/tee/tee
• kprobes: Limit max data_size of the kretprobe instances (bsc#1193669).
• livepatch: Avoid CPU hogging with cond_resched (bsc#1071995).
• media: Revert 'media: uvcvideo: Set unique vdev name based in type' (bsc#1193255).
• moxart: fix potential use-after-free on remove path (bsc#1194516).
• powerpc/fadump: Fix inaccurate CPU state info in vmcore generated with panic (bsc#1193901).
• powerpc: handle kdump appropriately with crash_kexec_post_notifiers option (bsc#1193901).
• tpm: fix potential NULL pointer access in tpm_del_char_device (bsc#1184209, bsc#1193660).
• vfs: check fd has read access in kernel_read_file_from_fd() (bsc#1194888).

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-0435: Fixed remote stack overflow in net/tipc module that validate domain record count on input (bsc#1195254).
• CVE-2021-3564: Fixed double-free memory corruption in the Linux kernel HCI device initialization subsystem that could have been used by attaching malicious HCI TTY Bluetooth devices. A local user could use this flaw to crash the system (bnc#1186207).
• CVE-2020-28097: Fixed out-of-bounds read in vgacon subsystem that mishandled software scrollback (bnc#1187723).
• CVE-2021-44733: Fixed a use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem, that could have occured because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object (bnc#1193767).
• CVE-2022-0322: Fixed SCTP issue with account stream padding length for reconf chunk (bsc#1194985).
• CVE-2021-4135: Fixed zero-initialize memory inside netdevsim for new map's value in function nsim_bpf_map_alloc (bsc#1193927).
• CVE-2022-22942: Fixed stale file descriptors on failed usercopy (bsc#1195065).
• CVE-2021-39657: Fixed out of bounds read due to a missing bounds check in ufshcd_eh_device_reset_handler of ufshcd.c. This could lead to local information disclosure with System execution privileges needed (bnc#1193864).
• CVE-2021-39648: Fixed possible disclosure of kernel heap memory due to a race condition in gadget_dev_desc_UDC_show of configfs.c. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation (bnc#1193861).
• CVE-2022-0330: Fixed flush TLBs before releasing backing store (bsc#1194880).
• CVE-2021-4197: Use cgroup open-time credentials for process migraton perm checks (bsc#1194302).
• CVE-2021-4202: Fixed NFC race condition by adding NCI_UNREG flag (bsc#1194529).
• CVE-2021-4083: Fixed a read-after-free memory flaw inside the garbage collection for Unix domain socket file handlers when users call close() and fget() simultaneouslyand can potentially trigger a race condition (bnc#1193727).
• CVE-2021-4149: Fixed btrfs unlock newly allocated extent buffer after error (bsc#1194001).

The following non-security bugs were fixed:

• KVM: remember position in kvm->vcpus array (bsc#1190973).
• KVM: s390: index kvm->arch.idle_mask by vcpu_idx (bsc#1190973).
• SUNRPC: Add basic load balancing to the transport switch - kabi fix. (bnc#1192729).
• SUNRPC: Add basic load balancing to the transport switch. (bnc#1192729)
• SUNRPC: Fix initialisation of struct rpc_xprt_switch (bnc#1192729).
• SUNRPC: Optimise transport balancing code (bnc#1192729).
• SUNRPC: Replace division by multiplication in calculation of queue length (bnc#1192729).
• SUNRPC: Skip zero-refcount transports (bnc#1192729).
• USB: serial: option: add Telit FN990 compositions (git-fixes).
• bpf: Verifer, adjust_scalar_min_max_vals to always call update_reg_bounds() (bsc#1194227).
• crypto: qat - fix undetected PFVF timeout in ACK loop (git-fixes).
• ext4: set csum seed in tmp inode while migrating to extents (bsc#1195272).
• fget: clarify and improve __fget_files() implementation (bsc#1193727).
• hv_netvsc: Set needed_headroom according to VF (bsc#1193507).
• ibmvnic: Allow extra failures before disabling (bsc#1195073 ltc#195713).
• ibmvnic: do not spin in tasklet (bsc#1195073 ltc#195713).
• ibmvnic: init ->running_cap_crqs early (bsc#1195073 ltc#195713).
• ibmvnic: remove unused ->wait_capability (bsc#1195073 ltc#195713).
• kABI fixup after adding vcpu_idx to struct kvm_cpu (bsc#1190973).
• kabi: mask new member 'empty' of struct Qdisc (bsc#1183405).
• kabi: revert drop of Qdisc::atomic_qlen (bsc#1183405).
• kprobes: Limit max data_size of the kretprobe instances (bsc#1193669).
• livepatch: Avoid CPU hogging with cond_resched (bsc#1071995).
• memstick: rtsx_usb_ms: fix UAF (bsc#1194516).
• mm/hwpoison: do not lock page again when…

The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-0435: Fixed remote stack overflow in net/tipc module that validate domain record count on input (bsc#1195254).
• CVE-2022-0330: Fixed flush TLBs before releasing backing store (bsc#1194880).
• CVE-2021-45486: Fixed an information leak because the hash table is very small in net/ipv4/route.c (bnc#1194087).
• CVE-2021-45095: Fixed refcount leak in pep_sock_accept in net/phonet/pep.c (bnc#1193867).
• CVE-2021-44733: Fixed a use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem, that could have occured because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object (bnc#1193767).
• CVE-2021-43976: Fixed a flaw that could allow an attacker (who can connect a crafted USB device) to cause a denial of service. (bnc#1192847)
• CVE-2021-43975: Fixed a flaw in hw_atl_utils_fw_rpc_wait that could allow an attacker (who can introduce a crafted device) to trigger an out-of-bounds write via a crafted length value. (bsc#1192845)
• CVE-2021-4202: Fixed NFC race condition by adding NCI_UNREG flag (bsc#1194529).
• CVE-2021-4197: Use cgroup open-time credentials for process migraton perm checks (bsc#1194302).
• CVE-2021-4159: Fixed kernel ptr leak vulnerability via BPF in coerce_reg_to_size (bsc#1194227).
• CVE-2021-4149: Fixed btrfs unlock newly allocated extent buffer after error (bsc#1194001).
• CVE-2021-4135: Fixed zero-initialize memory inside netdevsim for new map's value in function nsim_bpf_map_alloc (bsc#1193927).
• CVE-2021-4083: Fixed a read-after-free memory flaw inside the garbage collection for Unix domain socket file handlers when users call close() and fget() simultaneouslyand can potentially trigger a race condition (bnc#1193727).
• CVE-2021-4002: Fixed incorrect TLBs flush in hugetlbfs after huge_pmd_unshare (bsc#1192946).
• CVE-2021-39657: Fixed out of bounds read due to a missing bounds check in ufshcd_eh_device_reset_handler of ufshcd.c. This could lead to local information disclosure with System execution privileges needed (bnc#1193864).
• CVE-2021-39648: Fixed possible disclosure of kernel heap memory due to a race condition in gadget_dev_desc_UDC_show of configfs.c. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation (bnc#1193861).
• CVE-2021-3564: Fixed double-free memory corruption in the Linux kernel HCI device initialization subsystem that could have been used by attaching malicious HCI TTY Bluetooth devices. A local user could use this flaw to crash the system (bnc#1186207).
• CVE-2021-33098: Fixed a potential denial of service in Intel(R) Ethernet ixgbe driver due to improper input validation. (bsc#1192877)
• CVE-2021-28715: Fixed issue with xen/netback to do not queue unlimited number of packages (XSA-392) (bsc#1193442).
• CVE-2021-28714: Fixed issue with xen/netback to handle rx queue stall detection (XSA-392) (bsc#1193442).
• CVE-2021-28713: Fixed issue with xen/console to harden hvc_xen against event channel storms (XSA-391) (bsc#1193440).
• CVE-2021-28712: Fixed issue with xen/netfront to harden netfront against event channel storms (XSA-391) (bsc#1193440).
• CVE-2021-28711: Fixed issue with xen/blkfront to harden blkfront against event channel storms (XSA-391) (bsc#1193440).
• CVE-2021-0935: Fixed possible out of bounds write in ip6_xmit of ip6_output.c due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192032).
• CVE-2021-0920: Fixed a local privilege escalation due to an use after free bug in unix_gc (bsc#1193731).
• CVE-2020-27820: Fixed a vulnerability where a use-after-frees in nouveau's postclose() handler could happen if removing device (bsc#1179599).
• CVE-2019-15126: Fixed a vulnerability in Broadcom…

The SUSE Linux Enterprise 12 SP5 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-0435: Fixed remote stack overflow in net/tipc module that validate domain record count on input (bsc#1195254).
• CVE-2021-3564: Fixed double-free memory corruption in the Linux kernel HCI device initialization subsystem that could have been used by attaching malicious HCI TTY Bluetooth devices. A local user could use this flaw to crash the system (bnc#1186207).
• CVE-2020-28097: Fixed out-of-bounds read in vgacon subsystem that mishandled software scrollback (bnc#1187723).
• CVE-2021-44733: Fixed a use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem, that could have occured because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object (bnc#1193767).
• CVE-2022-0322: Fixed SCTP issue with account stream padding length for reconf chunk (bsc#1194985).
• CVE-2021-4135: Fixed zero-initialize memory inside netdevsim for new map's value in function nsim_bpf_map_alloc (bsc#1193927).
• CVE-2022-22942: Fixed stale file descriptors on failed usercopy (bsc#1195065).
• CVE-2021-39657: Fixed out of bounds read due to a missing bounds check in ufshcd_eh_device_reset_handler of ufshcd.c. This could lead to local information disclosure with System execution privileges needed (bnc#1193864).
• CVE-2021-39648: Fixed possible disclosure of kernel heap memory due to a race condition in gadget_dev_desc_UDC_show of configfs.c. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation (bnc#1193861).
• CVE-2022-0330: Fixed flush TLBs before releasing backing store (bsc#1194880).
• CVE-2021-4197: Use cgroup open-time credentials for process migraton perm checks (bsc#1194302).
• CVE-2021-4202: Fixed NFC race condition by adding NCI_UNREG flag (bsc#1194529).
• CVE-2021-4083: Fixed a read-after-free memory flaw inside the garbage collection for Unix domain socket file handlers when users call close() and fget() simultaneouslyand can potentially trigger a race condition (bnc#1193727).
• CVE-2021-4159: Fixed kernel ptr leak vulnerability via BPF in coerce_reg_to_size (bsc#1194227).

The following non-security bugs were fixed:

• KVM: remember position in kvm->vcpus array (bsc#1190973).
• KVM: s390: index kvm->arch.idle_mask by vcpu_idx (bsc#1190973).
• SUNRPC: Add basic load balancing to the transport switch - kabi fix. (bnc#1192729).
• SUNRPC: Add basic load balancing to the transport switch. (bnc#1192729)
• SUNRPC: Fix initialisation of struct rpc_xprt_switch (bnc#1192729).
• SUNRPC: Optimise transport balancing code (bnc#1192729).
• SUNRPC: Replace division by multiplication in calculation of queue length (bnc#1192729).
• SUNRPC: Skip zero-refcount transports (bnc#1192729).
• USB: serial: option: add Telit FN990 compositions (git-fixes).
• crypto: qat - fix undetected PFVF timeout in ACK loop (git-fixes).
• ext4: set csum seed in tmp inode while migrating to extents (bsc#1195272).
• fget: clarify and improve __fget_files() implementation (bsc#1193727).
• hv_netvsc: Set needed_headroom according to VF (bsc#1193507).
• ibmvnic: Allow extra failures before disabling (bsc#1195073 ltc#195713).
• ibmvnic: do not spin in tasklet (bsc#1195073 ltc#195713).
• ibmvnic: init ->running_cap_crqs early (bsc#1195073 ltc#195713).
• ibmvnic: remove unused ->wait_capability (bsc#1195073 ltc#195713).
• kABI fixup after adding vcpu_idx to struct kvm_cpu (bsc#1190973).
• kabi: mask new member 'empty' of struct Qdisc (bsc#1183405).
• kabi: revert drop of Qdisc::atomic_qlen (bsc#1183405).
• livepatch: Avoid CPU hogging with cond_resched (bsc#1071995).
• memstick: rtsx_usb_ms: fix UAF (bsc#1194516).
• mm/hwpoison: do not lock page again when me_huge_page() successfully recovers (bsc#1194814).
• moxart: fix potential use-after-free on remove path (bsc#1194516).
• net, xdp: Introduce xdp_init_buff…

The SUSE Linux Enterprise 12 SP5 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-0435: Fixed remote stack overflow in net/tipc module that validate domain record count on input (bsc#1195254).
• CVE-2022-24448: Fixed an issue inside fs/nfs/dir.c if an application sets the O_DIRECTORY flag, and tries to open a regular file, nfs_atomic_open() performs a regular lookup (bnc#1195612).
• CVE-2021-3564: Fixed double-free memory corruption in the Linux kernel HCI device initialization subsystem that could have been used by attaching malicious HCI TTY Bluetooth devices. A local user could use this flaw to crash the system (bnc#1186207).
• CVE-2020-28097: Fixed out-of-bounds read in vgacon subsystem that mishandled software scrollback (bnc#1187723).
• CVE-2021-45095: Fixed refcount leak in pep_sock_accept in net/phonet/pep.c (bnc#1193867).
• CVE-2022-22942: Fixed stale file descriptors on failed usercopy (bsc#1195065).
• CVE-2021-39657: Fixed out of bounds read due to a missing bounds check in ufshcd_eh_device_reset_handler of ufshcd.c. This could lead to local information disclosure with System execution privileges needed (bnc#1193864).
• CVE-2021-39648: Fixed possible disclosure of kernel heap memory due to a race condition in gadget_dev_desc_UDC_show of configfs.c. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation (bnc#1193861).
• CVE-2021-44733: Fixed a use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem, that could have occured because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object (bnc#1193767).
• CVE-2022-0330: Fixed flush TLBs before releasing backing store (bsc#1194880).
• CVE-2022-0322: Fixed SCTP issue with account stream padding length for reconf chunk (bsc#1194985).
• CVE-2021-4197: Use cgroup open-time credentials for process migraton perm checks (bsc#1194302).
• CVE-2021-4202: Fixed NFC race condition by adding NCI_UNREG flag (bsc#1194529).
• CVE-2021-4083: Fixed a read-after-free memory flaw inside the garbage collection for Unix domain socket file handlers when users call close() and fget() simultaneouslyand can potentially trigger a race condition (bnc#1193727).
• CVE-2021-4149: Fixed btrfs unlock newly allocated extent buffer after error (bsc#1194001).
• CVE-2021-4135: Fixed zero-initialize memory inside netdevsim for new map's value in function nsim_bpf_map_alloc (bsc#1193927).

The following non-security bugs were fixed:

• KVM: remember position in kvm->vcpus array (bsc#1190973).
• KVM: s390: index kvm->arch.idle_mask by vcpu_idx (bsc#1190973).
• SUNRPC: Add basic load balancing to the transport switch - kabi fix. (bnc#1192729).
• SUNRPC: Add basic load balancing to the transport switch. (bnc#1192729)
• SUNRPC: Fix initialisation of struct rpc_xprt_switch (bnc#1192729).
• SUNRPC: Optimise transport balancing code (bnc#1192729).
• SUNRPC: Replace division by multiplication in calculation of queue length (bnc#1192729).
• SUNRPC: Skip zero-refcount transports (bnc#1192729).
• USB: serial: option: add Telit FN990 compositions (git-fixes).
• bpf: Verifer, adjust_scalar_min_max_vals to always call update_reg_bounds() (bsc#1194227).
• crypto: qat - fix undetected PFVF timeout in ACK loop (git-fixes).
• ext4: set csum seed in tmp inode while migrating to extents (bsc#1195272).
• fget: clarify and improve __fget_files() implementation (bsc#1193727).
• hv_netvsc: Set needed_headroom according to VF (bsc#1193507).
• ibmvnic: Allow extra failures before disabling (bsc#1195073 ltc#195713).
• ibmvnic: do not spin in tasklet (bsc#1195073 ltc#195713).
• ibmvnic: init ->running_cap_crqs early (bsc#1195073 ltc#195713).
• ibmvnic: remove unused ->wait_capability (bsc#1195073 ltc#195713).
• kABI fixup after adding vcpu_idx to struct kvm_cpu (bsc#1190973).
• kabi: mask new member 'empty' of struct Qdisc (bsc#1183405).…

It was discovered that the rlimit tracking for user namespaces in the Linux kernel did not properly perform reference counting, leading to a use-after- free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-24122)

It was discovered that the BPF verifier in the Linux kernel did not properly restrict pointer types in certain situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-23222)

Jeremy Cline discovered a use-after-free in the nouveau graphics driver of the Linux kernel during device removal. A privileged or physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2020-27820)

It was discovered that the Packet network protocol implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-22600)

Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28713)

Jürgen Groß discovered that the Xen network backend driver in the Linux kernel did not adequately limit the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to cause a denial of service (excessive kernel memory consumption) in the network backend domain. (CVE-2021-28714, CVE-2021-28715)

Szymon Heidrich discovered that the USB Gadget subsystem in the Linux kernel did not properly restrict the size of control requests for certain gadget types, leading to possible out of bounds reads or writes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-39685)

It was discovered that the eBPF implementation in the Linux kernel contained a race condition around read-only maps. A privileged attacker could use this to modify read-only maps. (CVE-2021-4001)

Jann Horn discovered a race condition in the Unix domain socket implementation in the Linux kernel that could result in a read-after-free. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-4083)

It was discovered that the simulated networking device driver for the Linux kernel did not properly initialize memory in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-4135)

Kirill Tkhai discovered that the XFS file system implementation in the Linux kernel did not calculate size correctly when pre-allocating space in some situations. A local attacker could use this to expose sensitive information. (CVE-2021-4155)

Eric Biederman discovered that the cgroup process migration implementation in the Linux kernel did not perform permission checks correctly in some situations. A local attacker could possibly use this to gain administrative privileges. (CVE-2021-4197)

Brendan Dolan-Gavitt discovered that the aQuantia AQtion Ethernet device driver in the Linux kernel did not properly validate meta-data coming from the device. A local attacker who can control an emulated device can use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-43975)

It was discovered that the ARM Trusted Execution Environment (TEE) subsystem in the Linux kernel contained a race condition leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-44733)

It was discovered that the Phone Network protocol (PhoNet) implementation in the Linux kernel did not properly perform reference counting in some error conditions. A local…

It was discovered that the BPF verifier in the Linux kernel did not properly restrict pointer types in certain situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-23222)

Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. (CVE-2022-0492)

Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28711, CVE-2021-28712, CVE-2021-28713)

Jürgen Groß discovered that the Xen network backend driver in the Linux kernel did not adequately limit the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to cause a denial of service (excessive kernel memory consumption) in the network backend domain. (CVE-2021-28714, CVE-2021-28715)

Szymon Heidrich discovered that the USB Gadget subsystem in the Linux kernel did not properly restrict the size of control requests for certain gadget types, leading to possible out of bounds reads or writes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-39685)

It was discovered that a race condition existed in the poll implementation in the Linux kernel, resulting in a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-39698)

It was discovered that the simulated networking device driver for the Linux kernel did not properly initialize memory in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-4135)

Eric Biederman discovered that the cgroup process migration implementation in the Linux kernel did not perform permission checks correctly in some situations. A local attacker could possibly use this to gain administrative privileges. (CVE-2021-4197)

Brendan Dolan-Gavitt discovered that the aQuantia AQtion Ethernet device driver in the Linux kernel did not properly validate meta-data coming from the device. A local attacker who can control an emulated device can use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-43975)

It was discovered that the ARM Trusted Execution Environment (TEE) subsystem in the Linux kernel contained a race condition leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-44733)

It was discovered that the Phone Network protocol (PhoNet) implementation in the Linux kernel did not properly perform reference counting in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2021-45095)

It was discovered that the eBPF verifier in the Linux kernel did not properly perform bounds checking on mov32 operations. A local attacker could use this to expose sensitive information (kernel pointer addresses). (CVE-2021-45402)

It was discovered that the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2021-45480)

It was discovered that the BPF subsystem in the Linux kernel did not properly track pointer types on atomic fetch operations in some situations. A local attacker could use this to expose sensitive information (kernel pointer addresses). (CVE-2022-0264)

It was discovered that the TIPC Protocol implementation in the Linux kernel did not…

Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. (CVE-2022-0492)

Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28711, CVE-2021-28712, CVE-2021-28713)

Jürgen Groß discovered that the Xen network backend driver in the Linux kernel did not adequately limit the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to cause a denial of service (excessive kernel memory consumption) in the network backend domain. (CVE-2021-28714, CVE-2021-28715)

It was discovered that the simulated networking device driver for the Linux kernel did not properly initialize memory in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-4135)

Brendan Dolan-Gavitt discovered that the Marvell WiFi-Ex USB device driver in the Linux kernel did not properly handle some error conditions. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-43976)

It was discovered that the ARM Trusted Execution Environment (TEE) subsystem in the Linux kernel contained a race condition leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-44733)

It was discovered that the Phone Network protocol (PhoNet) implementation in the Linux kernel did not properly perform reference counting in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2021-45095)

It was discovered that the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2021-45480)

Samuel Page discovered that the Transparent Inter-Process Communication (TIPC) protocol implementation in the Linux kernel contained a stack-based buffer overflow. A remote attacker could use this to cause a denial of service (system crash) for systems that have a TIPC bearer configured. (CVE-2022-0435)

It was discovered that the KVM implementation for s390 systems in the Linux kernel did not properly prevent memory operations on PVM guests that were in non-protected mode. A local attacker could use this to obtain unauthorized memory write access. (CVE-2022-0516)

It was discovered that the BPF verifier in the Linux kernel did not properly restrict pointer types in certain situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-23222)

It was discovered that the network traffic control implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-1055)

Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. (CVE-2022-0492)

Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28711, CVE-2021-28712, CVE-2021-28713)

Jürgen Groß discovered that the Xen network backend driver in the Linux kernel did not adequately limit the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to cause a denial of service (excessive kernel memory consumption) in the network backend domain. (CVE-2021-28714, CVE-2021-28715)

Szymon Heidrich discovered that the USB Gadget subsystem in the Linux kernel did not properly restrict the size of control requests for certain gadget types, leading to possible out of bounds reads or writes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-39685)

It was discovered that a race condition existed in the poll implementation in the Linux kernel, resulting in a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-39698)

It was discovered that the simulated networking device driver for the Linux kernel did not properly initialize memory in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-4135)

Eric Biederman discovered that the cgroup process migration implementation in the Linux kernel did not perform permission checks correctly in some situations. A local attacker could possibly use this to gain administrative privileges. (CVE-2021-4197)

Brendan Dolan-Gavitt discovered that the aQuantia AQtion Ethernet device driver in the Linux kernel did not properly validate meta-data coming from the device. A local attacker who can control an emulated device can use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-43975)

It was discovered that the ARM Trusted Execution Environment (TEE) subsystem in the Linux kernel contained a race condition leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-44733)

It was discovered that the Phone Network protocol (PhoNet) implementation in the Linux kernel did not properly perform reference counting in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2021-45095)

It was discovered that the eBPF verifier in the Linux kernel did not properly perform bounds checking on mov32 operations. A local attacker could use this to expose sensitive information (kernel pointer addresses). (CVE-2021-45402)

It was discovered that the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2021-45480)

It was discovered that the BPF subsystem in the Linux kernel did not properly…

It was discovered that the network traffic control implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-1055)

Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. (CVE-2022-0492)

Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28711, CVE-2021-28712, CVE-2021-28713)

Jürgen Groß discovered that the Xen network backend driver in the Linux kernel did not adequately limit the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to cause a denial of service (excessive kernel memory consumption) in the network backend domain. (CVE-2021-28714, CVE-2021-28715)

It was discovered that the simulated networking device driver for the Linux kernel did not properly initialize memory in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-4135)

Brendan Dolan-Gavitt discovered that the Marvell WiFi-Ex USB device driver in the Linux kernel did not properly handle some error conditions. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-43976)

It was discovered that the ARM Trusted Execution Environment (TEE) subsystem in the Linux kernel contained a race condition leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-44733)

It was discovered that the Phone Network protocol (PhoNet) implementation in the Linux kernel did not properly perform reference counting in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2021-45095)

Wenqing Liu discovered that the f2fs file system in the Linux kernel did not properly validate the last xattr entry in an inode. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-45469)

It was discovered that the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2021-45480)

Samuel Page discovered that the Transparent Inter-Process Communication (TIPC) protocol implementation in the Linux kernel contained a stack-based buffer overflow. A remote attacker could use this to cause a denial of service (system crash) for systems that have a TIPC bearer configured. (CVE-2022-0435)

It was discovered that the IPsec implementation in the Linux kernel did not properly allocate enough memory when performing ESP transformations, leading to a heap-based buffer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-27666)