CVE-2020-16119

Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.

The Linux Kernel, the operating system core itself.

Security Fix(es):

An improper validation of an array index and out of bounds memory read in the Linux kernel s Integrated Services Digital Network (ISDN) functionality was found in the way users call ioctl CMTPCONNADD. A local user could use this flaw to crash the system or starve the resources causing denial of service.(CVE-2021-3896)

A flaw was found in the Linux kernel. A use-after-free vulnerability in the NFC stack can lead to a threat to confidentiality, integrity, and system availability.(CVE-2021-3760)

A flaw was found in the Linux kernel s CAPI over Bluetooth connection code. An attacker with a local account can escalate privileges when CAPI (ISDN) hardware connection fails.(CVE-2021-34981)

Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set of traffic' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking in APQ8053, IPQ4019, IPQ8064, MSM8909W, MSM8996AU, QCA9531, QCN5502, QCS405, SDX20, SM6150, SM7150(CVE-2020-3702)

UAF in Android ION memory allocator.(CVE-2021-0929)

A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.(CVE-2021-20322)

A flaw was found in s390 eBPF JIT in bpf_jit_insn in arch/s390/net/bpf_jit_comp.c in the Linux kernel. In this flaw, a local attacker with special user privilege can circumvent the verifier and may lead to a confidentiality problem.(CVE-2021-20320)

An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c.(CVE-2021-43389)

Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released.(CVE-2020-16119)

Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.

It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-0067)

It was discovered that the Serial CAN interface driver in the Linux kernel did not properly initialize data. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-11494)

Mauricio Faria de Oliveira discovered that the aufs implementation in the Linux kernel improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service. (CVE-2020-11935)

Piotr Krysiuk discovered that race conditions existed in the file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-12114)

Or Cohen discovered that the AF_PACKET implementation in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-14386)

Hador Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to 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-2020-16119)

Giuseppe Scrivano discovered that the overlay file system in the Linux kernel did not properly perform permission checks in some situations. A local attacker could possibly use this to bypass intended restrictions and gain read access to restricted files. (CVE-2020-16120)

This kernel update is based on upstream 5.10.70 and fixes at least the following security issues:

Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released (CVE-2020-16119).

oop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation (CVE-2021-41073).

For other upstream fixes, see the referenced changelogs.

This kernel-linus update is based on upstream 5.10.70 and fixes at least the following security issues:

Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released (CVE-2020-16119).

A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in the Linux kernel through 5.13.13 (CVE-2021-40490).

oop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation (CVE-2021-41073).

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-2022-39190: Fixed an issue that was discovered in net/netfilter/nf_tables_api.c and could cause a denial of service upon binding to an already bound chain (bnc#1203117).
• CVE-2022-39188: Fixed race condition in include/asm-generic/tlb.h where a device driver can free a page while it still has stale TLB entries (bnc#1203107).
• CVE-2022-36879: Fixed an issue in xfrm_expand_policies in net/xfrm/xfrm_policy.c where a refcount could be dropped twice (bnc#1201948).
• CVE-2022-3028: Fixed race condition that was found in the IP framework for transforming packets (XFRM subsystem) (bnc#1202898).
• CVE-2022-2977: Fixed reference counting for struct tpm_chip (bsc#1202672).
• CVE-2022-2905: Fixed tnum_range usage on array range checking for poke descriptors (bsc#1202564, bsc#1202860).
• CVE-2022-2663: Fixed an issue that was found in nf_conntrack_irc where the message handling could be confused and incorrectly matches the message (bnc#1202097).
• CVE-2022-2639: Fixed an integer coercion error that was found in the openvswitch kernel module (bnc#1202154).
• CVE-2022-26373: Fixed non-transparent sharing of return predictor targets between contexts in some Intel Processors (bnc#1201726).
• CVE-2022-2588: Fixed use-after-free in cls_route (bsc#1202096).
• CVE-2022-20369: Fixed out of bounds write in v4l2_m2m_querybuf of v4l2-mem2mem.c (bnc#1202347).
• CVE-2022-20368: Fixed slab-out-of-bounds access in packet_recvmsg() (bsc#1202346).
• CVE-2021-4203: Fixed use-after-free read flaw that was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (bnc#1194535).
• CVE-2021-4155: Fixed a data leak flaw that was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem (bnc#1194272).
• CVE-2020-36516: Fixed an issue in the mixed IPID assignment method where an attacker was able to inject data into or terminate a victim's TCP session (bnc#1196616).
• CVE-2020-27784: Fixed a vulnerability that was found in printer_ioctl() printer_ioctl() when accessing a deallocated instance (bnc#1202895).
• CVE-2016-3695: Fixed an issue inside the einj_error_inject function in drivers/acpi/apei/einj.c that allowed users to simulate hardware errors and consequently cause a denial of service (bnc#1023051).
• CVE-2022-3303: Fixed a race condition in the sound subsystem due to improper locking (bnc#1203769).
• CVE-2022-41218: Fixed an use-after-free caused by refcount races in drivers/media/dvb-core/dmxdev.c (bnc#1202960).
• CVE-2022-3239: Fixed an use-after-free in the video4linux driver that could lead a local user to able to crash the system or escalate their privileges (bnc#1203552).
• CVE-2022-41848: Fixed a race condition and resultant use-after-free if a physically proximate attacker removes a PCMCIA device while calling ioctl (bnc#1203987).
• CVE-2022-41849: Fixed a race condition and resultant use-after-free if a physically proximate attacker removes a USB device while calling open (bnc#1203992).
• CVE-2022-2586: Fixed a use-after-free which can be triggered when a nft table is deleted (bnc#1202095).
• CVE-2022-41222: Fixed a use-after-free via a stale TLB because an rmap lock is not held during a PUD move (bnc#1203622).
• CVE-2022-2503: Fixed a bug in dm-verity, device-mapper table reloads allowed users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allowed root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates (bnc#1202677).
• CVE-2020-16119: Fixed a use-after-free vulnerability exploitable by a local attacker due to reuse of a DCCP socket. (bnc#1177471)

The following non-security bugs were fixed:

• ACPI: APEI: Better fix to avoid…

The SUSE Linux Enterprise 15 SP2 kernel was updated.

The following security bugs were fixed:

• CVE-2020-16119: Fixed a use-after-free vulnerability exploitable by a local attacker due to reuse of a DCCP socket. (bnc#1177471)
• CVE-2022-20008: Fixed a bug which allowed to read kernel heap memory due to uninitialized data. This could lead to local information disclosure if reading from an SD card that triggers errors, with no additional execution privileges needed. (bnc#1199564)
• CVE-2022-2503: Fixed a bug in dm-verity, device-mapper table reloads allowed users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allowed root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates (bnc#1202677).
• CVE-2022-2586: Fixed a use-after-free which can be triggered when a nft table is deleted (bnc#1202095).
• CVE-2022-32296: Fixed a bug which allowed TCP servers to identify clients by observing what source ports are used (bnc#1200288).
• CVE-2022-3239: Fixed an use-after-free in the video4linux driver that could lead a local user to able to crash the system or escalate their privileges (bnc#1203552).
• CVE-2022-3303: Fixed a race condition in the sound subsystem due to improper locking (bnc#1203769).
• CVE-2022-41218: Fixed an use-after-free caused by refcount races in drivers/media/dvb-core/dmxdev.c (bnc#1202960).
• CVE-2022-41222: Fixed a use-after-free via a stale TLB because an rmap lock is not held during a PUD move (bnc#1203622).
• CVE-2022-41674: Fixed a DoS issue where kernel can crash on the reception of specific WiFi Frames (bsc#1203770).
• CVE-2022-41848: Fixed a race condition and resultant use-after-free if a physically proximate attacker removes a PCMCIA device while calling ioctl (bnc#1203987).
• CVE-2022-41849: Fixed a race condition and resultant use-after-free if a physically proximate attacker removes a USB device while calling open (bnc#1203992).
• CVE-2022-42719: Fixed remote code execution with wlan frames when parsing a multi-BSSID element (bsc#1204051).
• CVE-2022-42720: Fixed remote code execution due to refcounting bugs (bsc#1204059).
• CVE-2022-42721: Fixed remote code execution due list corruption in the wlan stack (bsc#1204060).

The following non-security bugs were fixed:

• net: mana: Add support of XDP_REDIRECT action (bsc#1201310, jsc#PED-529).
• net: mana: Add the Linux MANA PF driver (bsc#1201309, jsc#PED-529).
• x86/bugs: Reenable retbleed=off While for older kernels the return thunks are statically built in and cannot be dynamically patched out, retbleed=off should still work so that it can be disabled.

The SUSE Linux Enterprise 15 SP3 kernel was updated.

The following security bugs were fixed:

• CVE-2022-40768: Fixed information leak in the scsi driver which allowed local users to obtain sensitive information from kernel memory. (bnc#1203514)
• CVE-2022-3169: Fixed a denial of service flaw which occurs when consecutive requests to NVME_IOCTL_RESET and the NVME_IOCTL_SUBSYS_RESET are sent. (bnc#1203290)
• CVE-2022-42722: Fixed crash in beacon protection for P2P-device. (bsc#1204125)
• CVE-2022-42719: Fixed MBSSID parsing use-after-free. (bsc#1204051)
• CVE-2022-42721: Avoid nontransmitted BSS list corruption. (bsc#1204060)
• CVE-2022-42720: Fixed BSS refcounting bugs. (bsc#1204059)
• CVE-2022-3303: Fixed a race condition in the sound subsystem due to improper locking (bnc#1203769).
• CVE-2022-41218: Fixed an use-after-free caused by refcount races in drivers/media/dvb-core/dmxdev.c (bnc#1202960).
• CVE-2022-3239: Fixed an use-after-free in the video4linux driver that could lead a local user to able to crash the system or escalate their privileges (bnc#1203552).
• CVE-2022-41848: Fixed a race condition and resultant use-after-free if a physically proximate attacker removes a PCMCIA device while calling ioctl (bnc#1203987).
• CVE-2022-41849: Fixed a race condition and resultant use-after-free if a physically proximate attacker removes a USB device while calling open (bnc#1203992).
• CVE-2022-41674: Fixed a DoS issue where kernel can crash on the reception of specific WiFi Frames (bsc#1203770).
• CVE-2022-2586: Fixed a use-after-free which can be triggered when a nft table is deleted (bnc#1202095).
• CVE-2022-41222: Fixed a use-after-free via a stale TLB because an rmap lock is not held during a PUD move (bnc#1203622).
• CVE-2022-2503: Fixed a bug in dm-verity, device-mapper table reloads allowed users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allowed root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates (bnc#1202677).
• CVE-2022-20008: Fixed a bug which allowed to read kernel heap memory due to uninitialized data. This could lead to local information disclosure if reading from an SD card that triggers errors, with no additional execution privileges needed. (bnc#1199564)
• CVE-2020-16119: Fixed a use-after-free vulnerability exploitable by a local attacker due to reuse of a DCCP socket. (bnc#1177471)

The following non-security bugs were fixed:

• ALSA: aloop: Fix random zeros in capture data when using jiffies timer (git-fixes).
• ALSA: emu10k1: Fix out of bounds access in snd_emu10k1_pcm_channel_alloc() (git-fixes).
• ALSA: hda/realtek: Re-arrange quirk table entries (git-fixes).
• ALSA: seq: Fix data-race at module auto-loading (git-fixes).
• ALSA: seq: oss: Fix data-race for max_midi_devs access (git-fixes).
• ALSA: usb-audio: Fix an out-of-bounds bug in __snd_usb_parse_audio_interface() (git-fixes).
• ALSA: usb-audio: fix spelling mistakes (git-fixes).
• ALSA: usb-audio: Inform the delayed registration more properly (git-fixes).
• ALSA: usb-audio: Register card again for iface over delayed_register option (git-fixes).
• ALSA: usb-audio: Split endpoint setups for hw_params and prepare (git-fixes).
• arm64: cpufeature: Allow different PMU versions in ID_DFR0_EL1 (git-fixes)
• arm64: dts: allwinner: A64 Sopine: phy-mode rgmii-id (git-fixes)
• arm64: dts: allwinner: a64-sopine-baseboard: change RGMII mode to (bsc#1202341)
• arm64: dts: allwinner: H5: NanoPi Neo Plus2: phy-mode rgmii-id (git-fixes)
• arm64: dts: rockchip: Pull up wlan wake# on Gru-Bob (git-fixes)
• arm64: dts: rockchip: Remove 'enable-active-low' from rk3399-puma (git-fixes)
• arm64: dts: rockchip: Set RK3399-Gru PCLK_EDP to 24 MHz (git-fixes)
• arm64: dts: uniphier: Fix USB interrupts for PXs3 SoC (git-fixes)
• arm64:…

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

The following security bugs were fixed:

• CVE-2016-3695: Fixed an issue inside the einj_error_inject function in drivers/acpi/apei/einj.c that allowed users to simulate hardware errors and consequently cause a denial of service (bnc#1023051).
• CVE-2020-16119: Fixed a use-after-free due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released (bnc#1177471).
• CVE-2020-27784: Fixed a vulnerability that was found in printer_ioctl() printer_ioctl() when accessing a deallocated instance (bnc#1202895).
• CVE-2021-4155: Fixed a data leak flaw that was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem (bnc#1194272).
• CVE-2021-4203: Fixed use-after-free read flaw that was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (bnc#1194535).
• CVE-2022-20368: Fixed slab-out-of-bounds access in packet_recvmsg() (bsc#1202346).
• CVE-2022-20369: Fixed out of bounds write in v4l2_m2m_querybuf of v4l2-mem2mem.c (bnc#1202347).
• CVE-2022-2503: Fixed a LoadPin bypass in Dm-verity (bnc#1202677).
• CVE-2022-2586: Fixed issue in netfilter that allowed CHAIN_ID to refer to another table (bsc#1202095).
• CVE-2022-2588: Fixed use-after-free in cls_route (bsc#1202096).
• CVE-2022-26373: Fixed non-transparent sharing of return predictor targets between contexts in some Intel Processors (bnc#1201726).
• CVE-2022-2663: Fixed an issue that was found in nf_conntrack_irc where the message handling could be confused and incorrectly matches the message (bnc#1202097).
• CVE-2022-2905: Fixed tnum_range usage on array range checking for poke descriptors (bsc#1202564, bsc#1202860).
• CVE-2022-2977: Fixed reference counting for struct tpm_chip (bsc#1202672).
• CVE-2022-3028: Fixed race condition that was found in the IP framework for transforming packets (XFRM subsystem) (bnc#1202898).
• CVE-2022-3169: Fixed a denial of service that resulted in a PCIe link disconnect (bnc#1203290).
• CVE-2022-32296: Fixed issue where TCP servers were able to identify clients by observing what source ports are used (bnc#1200288).
• CVE-2022-3239: Fixed a use-after-free in the video4linux driver (bnc#1203552).
• CVE-2022-3303: Fixed a race at SNDCTL_DSP_SYNC (bsc#1203769).
• CVE-2022-36879: Fixed an issue in xfrm_expand_policies in net/xfrm/xfrm_policy.c where a refcount could be dropped twice (bnc#1201948).
• CVE-2022-39188: Fixed race condition in include/asm-generic/tlb.h where a device driver can free a page while it still has stale TLB entries (bnc#1203107).
• CVE-2022-39190: Fixed an issue that was discovered in net/netfilter/nf_tables_api.c and could cause a denial of service upon binding to an already bound chain (bnc#1203117).
• CVE-2022-40768: Fixed information leak in drivers/scsi/stex.c due to stex_queuecommand_lck lack a memset for the PASSTHRU_CMD case (bnc#1203514).
• CVE-2022-41218: Fixed a use-after-free due to refcount races at releasing (bsc#1202960).
• CVE-2022-41222: Fixed a use-after-free via a stale TLB because an rmap lock is not held during a PUD move (bnc#1203622).
• CVE-2022-41674: Fixed a DoS issue where kernel can crash on the reception of specific WiFi Frames (bsc#1203770).
• CVE-2022-41848: Fixed a use-after-free in mgslpc_ops (bsc#1203987).
• CVE-2022-41849: Fixed a use-after-free in ufx_ops_open() (bsc#1203992).
• CVE-2022-42719: Fixed MBSSID parsing use-after-free (bsc#1204051).
• CVE-2022-42720: Fixed BSS refcounting bugs (bsc#1204059).
• CVE-2022-42721: Avoid nontransmitted BSS list corruption (bsc#1204060).
• CVE-2022-42722: Fixed crash in beacon protection for P2P-device (bsc#1204125).

The following non-security bugs were fixed:

• Fixed parsing of rpm/macros.kernel-source on SLE12 (bsc#1201019).
• acpi: EC: Remove duplicate ThinkPad X1 Carbon 6th entry from DMI quirks (git-fixes).
• acpi: LPSS: Fix missing check in register_device_clock()…

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-4378: Fixed stack overflow in __do_proc_dointvec (bsc#1206207).
• CVE-2022-42328: Guests could trigger denial of service via the netback driver (bsc#1206114).
• CVE-2022-42329: Guests could trigger denial of service via the netback driver (bsc#1206113).
• CVE-2022-3643: Guests could trigger NIC interface reset/abort/crash via netback driver (bsc#1206113).
• CVE-2022-3633: Fixed a memory leak in j1939_session_destroy of the file net/can/j1939/transport.c (bsc#1204650).
• CVE-2022-3114: Fixed a denial of service in imx_register_uart_clocks() in drivers/clk/imx/clk.c (bsc#1206391).
• CVE-2022-3619: Fixed a memory leak in l2cap_recv_acldata of the file net/bluetooth/l2cap_core.c (bsc#1204569).
• CVE-2022-3635: Fixed a use-after-free in the tst_timer() of the file drivers/atm/idt77252.c (bsc#1204631).
• CVE-2022-41850: Fixed a race condition in roccat_report_event() in drivers/hid/hid-roccat.c (bsc#1203960).
• CVE-2022-45934: Fixed a integer wraparound via L2CAP_CONF_REQ packets in l2cap_config_req in net/bluetooth/l2cap_core.c (bsc#1205796).
• CVE-2022-3567: Fixed a to race condition in inet6_stream_ops()/inet6_dgram_ops() (bsc#1204414).
• CVE-2022-41858: Fixed a denial of service in sl_tx_timeout() in drivers/net/slip (bsc#1205671).
• CVE-2022-43945: Fixed a buffer overflow in the NFSD implementation (bsc#1205128).
• CVE-2022-4095: Fixed a use-after-free in rtl8712 driver (bsc#1205514).
• CVE-2022-3903: Fixed a denial of service with the Infrared Transceiver USB driver (bsc#1205220).
• CVE-2022-42896: Fixed a use-after-free vulnerability in the net/bluetooth/l2cap_core.c's l2cap_connect() and l2cap_le_connect_req() which may have allowed code execution and leaking kernel memory (respectively) remotely via Bluetooth (bsc#1205709).
• CVE-2022-42895: Fixed an information leak in the net/bluetooth/l2cap_core.c's l2cap_parse_conf_req() which can be used to leak kernel pointers remotely (bsc#1205705).
• CVE-2022-3424: Fixed use-after-free in gru_set_context_option(), gru_fault() and gru_handle_user_call_os() that could lead to kernel panic (bsc#1204166).
• CVE-2022-3628: Fixed potential buffer overflow in brcmf_fweh_event_worker() in wifi/brcmfmac (bsc#1204868).
• CVE-2022-2964: Fixed memory corruption issues in ax88179_178a devices (bsc#1202686).
• CVE-2021-4037: Fixed function logic vulnerability that allowed local users to create files for the XFS file-system with an unintended group ownership and with group execution and SGID permission bits set (bsc#1198702).
• CVE-2022-43750: Fixed vulnerability in usbmon that allowed a user-space client to corrupt the monitor's internal memory (bsc#1204653).
• CVE-2022-3542: Fixed memory leak in bnx2x_tpa_stop() in drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c (bsc#1204402).
• CVE-2022-3629: Fixed memory leak in vsock_connect() in net/vmw_vsock/af_vsock.c (bsc#1204635).
• CVE-2022-3646: Fixed memory leak in nilfs_attach_log_writer() in fs/nilfs2/segment.c (bsc#1204646).
• CVE-2022-3649: Fixed use-after-free in nilfs_new_inode() in fs/nilfs2/inode.c (bsc#1204647).
• CVE-2022-3621: Fixed null pointer dereference in nilfs_bmap_lookup_at_level() in fs/nilfs2/inode.c (bsc#1204574).
• CVE-2022-3594: Fixed excessive data logging in intr_callback() in drivers/net/usb/r8152.c (bsc#1204479).
• CVE-2022-3586: Fixed use-after-free in socket buffer (SKB) that could allow a local unprivileged user to cause a denial of service (bsc#1204439).
• CVE-2022-3565: Fixed use-after-free in del_timer() in drivers/isdn/mISDN/l1oip_core.c (bsc#1204431).
• CVE-2022-3524: Fixed memory leak in ipv6_renew_options() in the IPv6 handler (bsc#1204354).
• CVE-2022-40768: Fixed information leak in the scsi driver which allowed local users to obtain sensitive information from kernel memory (bsc#1203514).
• CVE-2022-42703: Fixed use-after-free in mm/rmap.c related to leaf anon_vma…

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2017-13695: Fixed fix acpi operand cache leak in nseval.c (bsc#1055710).
• CVE-2018-7755: Fixed bypass of kernel security protections such as KASLR using fd_locked_ioctl function in drivers/block/floppy.c (bnc#1084513).
• CVE-2019-3837: Fixed memory leak due to thread-unsafe implementation of the net_dma code in tcp_recvmsg() (bnc#1131430).
• CVE-2019-3900: Fixed infinite loop while receiving packets in vhost_net (bnc#1133374).
• CVE-2020-15393: Fixed memory leak in usbtest_disconnect in drivers/usb/misc/usbtest.c (bnc#1173514).
• CVE-2020-16119: Fixed use-after-free exploitable by a local attacker due to reuse of a DCCP socket (bnc#1177471).
• CVE-2020-36557: Fixed race condition in the VT_DISALLOCATE ioctl and closing/opening of ttys which could lead to a use-after-free (bnc#1201429).
• CVE-2020-36558: Fixed race condition in VT_RESIZEX (bsc#1200910).
• CVE-2021-26341: Fixed vulnerablity where some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage (bnc#1201050).
• CVE-2021-33655: When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds (bnc#1201635).
• CVE-2021-33656: Fixed memory out of bounds write when setting font with malicous data by ioctl cmd PIO_FONT (bnc#1201636).
• CVE-2021-34981: Fixed file refcounter in bluetooth cmtp when cmtp_attach_device fails (bsc#1191961).
• CVE-2021-39713: Fixed race condition in the network scheduling subsystem which could lead to a use-after-free (bsc#1196973).
• CVE-2021-45868: Fixed use-after-free in fs/quota/quota_tree.c (bnc#1197366).
• CVE-2022-1011: Fixed UAF reads of write() buffers, allowing theft of (partial) /etc/shadow hashes (bsc#1197343).
• CVE-2022-1048: Fixed potential AB/BA lock with buffer_mutex and mmap_lock (bsc#1197331).
• CVE-2022-1353: Fixed denial of service in the pfkey_register function in net/key/af_key.c (bnc#1198516).
• CVE-2022-1462: Fixed out-of-bounds read in the TeleTYpe subsystem allowing local user to crash the system or read unauthorized random data from memory (bnc#1198829).
• CVE-2022-1652: Fixed use after free in floppy (bsc#1199063).
• CVE-2022-1679: Fixed use-after-free in the atheros wireless adapter driver (bnc#1199487).
• CVE-2022-20132: Fixed out of bounds read in lg_probe and related functions of hid-lg.c and other USB HID files (bnc#1200619).
• CVE-2022-20166: Fixed out of bounds write due to a heap buffer overflow which could lead to local escalation of privilege with System execution privileges needed (bnc#1200598).
• CVE-2022-20368: Fixed slab-out-of-bounds access in packet_recvmsg() (bnc#1202346).
• CVE-2022-20369: Fixed out of bounds write due to improper input validation in v4l2_m2m_querybuf of v4l2-mem2mem.c (bnc#1202347).
• CVE-2022-21166, CVE-2022-21127, CVE-2022-21123, CVE-2022-21125, CVE-2022-21180: Fixed stale MMIO data transient information leaks (INTEL-TA-00615) (bnc#1199650).
• CVE-2022-21385: Fixed warn in rds_message_alloc_sgs (bnc#1202897).
• CVE-2022-21499: Fixed issue where it was trivial to break out of lockdown using kgdb (bsc#1199426).
• CVE-2022-2318: Fixed use-after-free caused by timer handler in net/rose/rose_timer.c of linux that allow attackers to crash linux kernel without any privileges (bnc#1201251).
• CVE-2022-2663: Fixed possible firewall bypass when users are using unencrypted IRC due to message handling confusion in nf_conntrack_irc (bnc#1202097).
• CVE-2022-28356: Fixed refcount leak bug in net/llc/af_llc.c (bnc#1197391).
• CVE-2022-29900: Fixed mis-trained branch predictions for return instructions that may have allowed arbitrary speculative code execution under certain microarchitecture-dependent conditions (bnc#1199657).
• CVE-2022-29901: Fixed vulnerability where an attacker with unprivileged user access can hijack return instructions to…

Hadar Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to 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-2020-16119)

Jay Shin discovered that the ext4 file system implementation in the Linux kernel did not properly handle directory access with broken indexing, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-14314)

David Alan Gilbert discovered that the XFS file system implementation in the Linux kernel did not properly perform metadata validation in some circumstances. A local attacker could use this to cause a denial of service. (CVE-2020-14385)

Giuseppe Scrivano discovered that the overlay file system in the Linux kernel did not properly perform permission checks in some situations. A local attacker could possibly use this to bypass intended restrictions and gain read access to restricted files. (CVE-2020-16120)

It was discovered that a race condition existed in the hugetlb sysctl implementation in the Linux kernel. A privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-25285)

It was discovered that the block layer subsystem in the Linux kernel did not properly handle zero-length requests. A local attacker could use this to cause a denial of service. (CVE-2020-25641)

Hadar Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to 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-2020-16119)

Giuseppe Scrivano discovered that the overlay file system in the Linux kernel did not properly perform permission checks in some situations. A local attacker could possibly use this to bypass intended restrictions and gain read access to restricted files. (CVE-2020-16120)

Hadar Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to 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-2020-16119)

Wen Xu discovered that the XFS file system in the Linux kernel did not properly validate inode metadata in some situations. An attacker could use this to construct a malicious XFS image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10322)

It was discovered that the btrfs file system in the Linux kernel contained a use-after-free vulnerability when merging free space. An attacker could use this to construct a malicious btrfs image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2019-19448)

Jay Shin discovered that the ext4 file system implementation in the Linux kernel did not properly handle directory access with broken indexing, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-14314)

Giuseppe Scrivano discovered that the overlay file system in the Linux kernel did not properly perform permission checks in some situations. A local attacker could possibly use this to bypass intended restrictions and gain read access to restricted files. (CVE-2020-16120)

It was discovered that the NFS client implementation in the Linux kernel did not properly perform bounds checking before copying security labels in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-25212)

It was discovered that the NFC implementation in the Linux kernel did not properly perform permissions checks when opening raw sockets. A local attacker could use this to create or listen to NFC traffic. (CVE-2020-26088)

Hadar Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to 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-2020-16119)

Wen Xu discovered that the XFS file system in the Linux kernel did not properly validate inode metadata in some situations. An attacker could use this to construct a malicious XFS image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10322)

Jay Shin discovered that the ext4 file system implementation in the Linux kernel did not properly handle directory access with broken indexing, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-14314)

It was discovered that a race condition existed in the hugetlb sysctl implementation in the Linux kernel. A privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-25285)

Hadar Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.