CVE-2020-0429

In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption 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-152735806

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

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: 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 (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value (bnc#1186109 bnc#1186390 bnc#1188876).

• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).

• CVE-2021-42739: The firewire subsystem in the Linux kernel has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bnc#1184673).

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2021-42252: An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel Local attackers able to access the Aspeed LPC control interface could overwrite memory in…

This update for the Linux Kernel 4.4.180-94_130 fixes several issues.

The following security issues were fixed:

• CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption 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. (bsc#1176724)
• CVE-2020-14381: Fixed a use-after-free in the fast user mutex (futex) wait operation, which could have lead to memory corruption and possibly privilege escalation (bsc#1176011).
• CVE-2020-0431: In kbd_keycode of keyboard.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. (bsc#1176722)
• CVE-2020-25212: A TOCTOU mismatch in the NFS client code could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c (bsc#1176381).
• CVE-2020-11668: Fixed an out of bounds write to the heap in drivers/media/usb/gspca/xirlink_cit.c (aka the Xirlink camera USB driver) caused by mishandling invalid descriptors (bsc#1168952).
• CVE-2020-1749: A flaw was found in the implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. When an encrypted tunnel is created between two hosts, the kernel isn't correctly routing tunneled data over the encrypted link, rather sending the data unencrypted. This would have allowed anyone in between the two endpoints to read the traffic unencrypted. (bsc#1165629)

This update for the Linux Kernel 4.4.180-94_107 fixes several issues.

The following security issues were fixed:

• CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption 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. (bsc#1176724)
• CVE-2020-14381: Fixed a use-after-free in the fast user mutex (futex) wait operation, which could have lead to memory corruption and possibly privilege escalation (bsc#1176011).
• CVE-2020-0431: In kbd_keycode of keyboard.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. (bsc#1176722)
• CVE-2020-25212: A TOCTOU mismatch in the NFS client code could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c (bsc#1176381).
• CVE-2020-14386: Fixed a memory corruption which could have lead to an attacker gaining root privileges from unprivileged processes. The highest threat from this vulnerability is to data confidentiality and integrity (bsc#1176069).

This update for the Linux Kernel 4.4.121-92_146 fixes several issues.

The following security issues were fixed:

• CVE-2020-25668: Fixed a concurrency use-after-free in con_font_op (bsc#1178622).
• CVE-2020-25645: Fixed an issue which traffic between two Geneve endpoints may be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted (bsc#1177513).
• CVE-2020-0429: Fixed a memory corruption due to a use after free which could have led to to local privilege escalation (bsc#1176931).
• CVE-2020-11668: Fixed an issue where the Xirlink camera USB driver mishandled invalid descriptors (bsc#1173942).
• CVE-2020-1749: Use ip6_dst_lookup_flow instead of ip6_dst_lookup (bsc#1165631).

This update for the Linux Kernel 4.4.180-94_135 fixes several issues.

The following security issues were fixed:

• CVE-2020-25645: Fixed an issue which traffic between two Geneve endpoints may be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted (bsc#1177513).
• CVE-2020-0429: Fixed a memory corruption due to a use after free which could have led to to local privilege escalation (bsc#1176931).
• CVE-2020-11668: Fixed an issue where the Xirlink camera USB driver mishandled invalid descriptors (bsc#1173942).
• CVE-2020-1749: Use ip6_dst_lookup_flow instead of ip6_dst_lookup (bsc#1165631).

This update for the Linux Kernel 4.4.180-94_138 fixes several issues.

The following security issues were fixed:

• CVE-2020-27786: Fixed a potential user after free which could have led to memory corruption or privilege escalation (bsc#1179616).
• CVE-2020-28374: Fixed insufficient identifier checking in the LIO SCSI target code which could have been used by remote attackers to read or write files via directory traversal in an XCOPY request (bsc#1178684).
• CVE-2020-25645: Fixed an issue where the traffic between two Geneve endpoints may have been unencrypted when IPsec was configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted (bsc#1177513).
• CVE-2020-0429: Fixed a potential memory corruption due to a use after free which could have led local escalation of privilege with System execution privileges needed (bsc#1176931).
• CVE-2020-1749: Fixed an issue in some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6 where the kernel was not correctly routing tunneled data over the encrypted link rather sending the data unencrypted (bsc#1165631).

This update for the Linux Kernel 4.4.180-94_141 fixes several issues.

The following security issues were fixed:

• CVE-2021-27365: Fixed an issue where data structures did not have appropriate length constraints or checks, and could exceed the PAGE_SIZE value (bsc#1183491).
• CVE-2021-27363: Fixed a kernel pointer leak which could have been used to determine the address of the iscsi_transport structure (bsc#1183120).
• CVE-2021-27364: Fixed an issue where an unprivileged user could craft Netlink messages (bsc#1182717).
• CVE-2020-25645: Fixed an an issue in IPsec that caused traffic between two Geneve endpoints to be unencrypted (bsc#1177513).
• CVE-2020-0429: Fixed a memory corruption due to a use after free which could have led to local escalation of privilege with System execution privileges needed (bsc#1176931).
• CVE-2020-1749: Use ip6_dst_lookup_flow instead of ip6_dst_lookup (bsc#1165631).

This update for the Linux Kernel 4.4.121-92_152 fixes several issues.

The following security issues were fixed:

• CVE-2021-27365: Fixed an issue where data structures did not have appropriate length constraints or checks, and could exceed the PAGE_SIZE value (bsc#1183491).
• CVE-2021-27363: Fixed a kernel pointer leak which could have been used to determine the address of the iscsi_transport structure (bsc#1183120).
• CVE-2021-27364: Fixed an issue where an unprivileged user could craft Netlink messages (bsc#1182717).
• CVE-2020-25645: Fixed an an issue in IPsec that caused traffic between two Geneve endpoints to be unencrypted (bsc#1177513).
• CVE-2020-0429: Fixed a memory corruption due to a use after free which could have led to local escalation of privilege with System execution privileges needed (bsc#1176931).
• CVE-2020-1749: Use ip6_dst_lookup_flow instead of ip6_dst_lookup (bsc#1165631).

This update for the Linux Kernel 4.4.180-94_144 fixes several issues.

The following issues were fixed:

• CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This could lead to writing an arbitrary values (bsc#1186111).
• CVE-2021-28688: Fixed an issue introduced by XSA-365, leaving around zombie domains after xen guest has died (bsc#1183646).
• CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with system execution privileges needed. (bsc#1176724).
• Fixed a regression with the last livepatch which caused a kernel warning during sysfs read (bsc#1186235).

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

The following security bugs were fixed:

• CVE-2021-3659: Fixed a NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c (bsc#1188876).
• CVE-2021-37576: Fixed an issue on the powerpc platform, where a KVM guest OS user could cause host OS memory corruption via rtas_args.nargs (bsc#1188838).
• CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. (bsc#1176724).
• CVE-2020-36386: Fixed a slab out-of-bounds read in hci_extended_inquiry_result_evt (bsc#1187038).
• CVE-2021-22543: Fixed an improper handling of VM_IO|VM_PFNMAP vmas in KVM that allows users to start and control a VM to read/write random pages of memory and can result in local privilege escalation. (bnc#1186482)
• CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that allows to obtain full root privileges. (bsc#1188062)
• CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/x_tables.c that could allow local provilege escalation. (bsc#1188116)
• CVE-2021-3609: Fixed a race condition in the CAN BCM networking protocol which allows for local privilege escalation. (bsc#1187215)
• CVE-2021-3612: Fixed an out-of-bounds memory write flaw which could allows a local user to crash the system or possibly escalate their privileges on the system. (bsc#1187585)
• CVE-2020-36385: Fixed a use-after-free flaw in ucma.c which allows for local privilege escalation. (bsc#1187050)

The following non-security bugs were fixed:

• ACPI: AMBA: Fix resource name in /proc/iomem (git-fixes).
• ACPI: bus: Call kobject_put() in acpi_init() error path (git-fixes).
• ACPI: processor idle: Fix up C-state latency if not ordered (git-fixes).
• ACPI: property: Constify stubs for CONFIG_ACPI=n case (git-fixes).
• ACPI: sysfs: Fix a buffer overrun problem with description_show() (git-fixes).
• ALSA: bebob: add support for ToneWeal FW66 (git-fixes).
• ALSA: hda: Add IRQ check for platform_get_irq() (git-fixes).
• ALSA: isa: Fix error return code in snd_cmi8330_probe() (git-fixes).
• ALSA: ppc: fix error return code in snd_pmac_probe() (git-fixes).
• ALSA: sb: Fix potential ABBA deadlock in CSP driver (git-fixes).
• ALSA: sb: Fix potential double-free of CSP mixer elements (git-fixes).
• ALSA: usb-audio: fix rate on Ozone Z90 USB headset (git-fixes).
• ASoC: cs42l42: Correct definition of CS42L42_ADC_PDN_MASK (git-fixes).
• ASoC: hisilicon: fix missing clk_disable_unprepare() on error in hi6210_i2s_startup() (git-fixes).
• ASoC: soc-core: Fix the error return code in snd_soc_of_parse_audio_routing() (git-fixes).
• ASoC: tegra: Set driver_name=tegra for all machine drivers (git-fixes).
• Bluetooth: Fix the HCI to MGMT status conversion table (git-fixes).
• Bluetooth: Shutdown controller after workqueues are flushed or cancelled (git-fixes).
• Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc (git-fixes).
• Bluetooth: mgmt: Fix slab-out-of-bounds in tlv_data_is_valid (git-fixes).
• HID: Add BUS_VIRTUAL to hid_connect logging (git-fixes).
• HID: gt683r: add missing MODULE_DEVICE_TABLE (git-fixes).
• HID: hid-sensor-hub: Return error for hid_set_field() failure (git-fixes).
• HID: usbhid: fix info leak in hid_submit_ctrl (git-fixes).
• HID: wacom: Correct base usage for capacitive ExpressKey status bits (git-fixes).
• Input: hil_kbd - fix error return code in hil_dev_connect() (git-fixes).
• Input: usbtouchscreen - fix control-request directions (git-fixes).
• PCI/sysfs: Fix dsm_label_utf16s_to_utf8s() buffer overrun (git-fixes).
• PCI: Add ACS quirk for Broadcom BCM57414 NIC (git-fixes).
• PCI: Leave Apple Thunderbolt controllers on for s2idle or standby (git-fixes).
• PCI: Mark TI C667X to avoid bus reset (git-fixes).
• PCI: Mark some NVIDIA GPUs to avoid bus reset…

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

The following security bugs were fixed:

• CVE-2021-3659: Fixed a NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c (bsc#1188876).
• CVE-2021-22543: Fixed improper handling of VM_IO|VM_PFNMAP vmas in KVM, which could bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allowed users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation (bsc#1186482).
• CVE-2021-37576: Fixed an issue on the powerpc platform, where a KVM guest OS user could cause host OS memory corruption via rtas_args.nargs (bsc#1188838).
• CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. (bsc#1176724).
• CVE-2020-36386: Fixed a slab out-of-bounds read in hci_extended_inquiry_result_evt (bsc#1187038).

The following non-security bugs were fixed:

• ACPI: AMBA: Fix resource name in /proc/iomem (git-fixes).
• ACPI: bus: Call kobject_put() in acpi_init() error path (git-fixes).
• ACPI: processor idle: Fix up C-state latency if not ordered (git-fixes).
• ALSA: bebob: add support for ToneWeal FW66 (git-fixes).
• ALSA: hda: Add IRQ check for platform_get_irq() (git-fixes).
• ALSA: ppc: fix error return code in snd_pmac_probe() (git-fixes).
• ALSA: sb: Fix potential ABBA deadlock in CSP driver (git-fixes).
• ALSA: sb: Fix potential double-free of CSP mixer elements (git-fixes).
• ALSA: usb-audio: fix rate on Ozone Z90 USB headset (git-fixes).
• ASoC: soc-core: Fix the error return code in snd_soc_of_parse_audio_routing() (git-fixes).
• ASoC: tegra: Set driver_name=tegra for all machine drivers (git-fixes).
• Bluetooth: Fix the HCI to MGMT status conversion table (git-fixes).
• Bluetooth: Shutdown controller after workqueues are flushed or cancelled (git-fixes).
• Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc (git-fixes).
• HID: wacom: Correct base usage for capacitive ExpressKey status bits (git-fixes).
• PCI/sysfs: Fix dsm_label_utf16s_to_utf8s() buffer overrun (git-fixes).
• PCI/sysfs: Fix dsm_label_utf16s_to_utf8s() buffer overrun (git-fixes).
• PCI: Add ACS quirk for Broadcom BCM57414 NIC (git-fixes).
• PCI: Leave Apple Thunderbolt controllers on for s2idle or standby (git-fixes).
• PCI: quirks: fix false kABI positive (git-fixes).
• Revert 'USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem' (git-fixes).
• USB: cdc-acm: blacklist Heimann USB Appset device (git-fixes).
• USB: move many drivers to use DEVICE_ATTR_WO (git-fixes).
• USB: serial: cp210x: add ID for CEL EM3588 USB ZigBee stick (git-fixes).
• USB: serial: cp210x: fix comments for GE CS1000 (git-fixes).
• USB: serial: cp210x: fix comments for GE CS1000 (git-fixes).
• USB: serial: option: add support for u-blox LARA-R6 family (git-fixes).
• USB: usb-storage: Add LaCie Rugged USB3-FW to IGNORE_UAS (git-fixes).
• ath9k: Fix kernel NULL pointer dereference during ath_reset_internal() (git-fixes).
• can: ems_usb: fix memory leak (git-fixes).
• can: esd_usb2: fix memory leak (git-fixes).
• can: hi311x: fix a signedness bug in hi3110_cmd() (git-fixes).
• can: mcba_usb_start(): add missing urb->transfer_dma initialization (git-fixes).
• can: raw: raw_setsockopt(): fix raw_rcv panic for sock UAF (git-fixes).
• can: sja1000: sja1000_err(): do not count arbitration lose as an error (git-fixes).
• can: sun4i_can: sun4i_can_err(): do not count arbitration lose as an error (git-fixes).
• can: ti_hecc: Fix memleak in ti_hecc_probe (git-fixes).
• can: usb_8dev: fix memory leak (git-fixes).
• ceph: do not WARN if we're still opening a session to an MDS (bsc#1188750).
• cifs: Fix preauth hash corruption (git-fixes).
• cifs: Return correct error code from…

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

The following security bugs were fixed:

• CVE-2021-3659: Fixed a NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c (bsc#1188876).
• CVE-2021-22543: Fixed improper handling of VM_IO|VM_PFNMAP vmas in KVM, which could bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allowed users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation (bsc#1186482).
• CVE-2021-37576: Fixed an issue on the powerpc platform, where a KVM guest OS user could cause host OS memory corruption via rtas_args.nargs (bsc#1188838).
• CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. (bsc#1176724).
• CVE-2020-36386: Fixed a slab out-of-bounds read in hci_extended_inquiry_result_evt (bsc#1187038 ).

The following non-security bugs were fixed:

• ACPI: AMBA: Fix resource name in /proc/iomem (git-fixes).
• ACPI: bus: Call kobject_put() in acpi_init() error path (git-fixes).
• ACPI: processor idle: Fix up C-state latency if not ordered (git-fixes).
• ALSA: bebob: add support for ToneWeal FW66 (git-fixes).
• ALSA: hda: Add IRQ check for platform_get_irq() (git-fixes).
• ALSA: ppc: fix error return code in snd_pmac_probe() (git-fixes).
• ALSA: sb: Fix potential ABBA deadlock in CSP driver (git-fixes).
• ALSA: sb: Fix potential double-free of CSP mixer elements (git-fixes).
• ALSA: usb-audio: fix rate on Ozone Z90 USB headset (git-fixes).
• ASoC: soc-core: Fix the error return code in snd_soc_of_parse_audio_routing() (git-fixes).
• ASoC: tegra: Set driver_name=tegra for all machine drivers (git-fixes).
• Bluetooth: Fix the HCI to MGMT status conversion table (git-fixes).
• Bluetooth: Shutdown controller after workqueues are flushed or cancelled (git-fixes).
• Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc (git-fixes).
• HID: wacom: Correct base usage for capacitive ExpressKey status bits (git-fixes).
• PCI/sysfs: Fix dsm_label_utf16s_to_utf8s() buffer overrun (git-fixes).
• PCI: Add ACS quirk for Broadcom BCM57414 NIC (git-fixes).
• PCI: Leave Apple Thunderbolt controllers on for s2idle or standby (git-fixes).
• PCI: quirks: fix false kABI positive (git-fixes).
• USB: cdc-acm: blacklist Heimann USB Appset device (git-fixes).
• USB: move many drivers to use DEVICE_ATTR_WO (git-fixes).
• USB: serial: cp210x: add ID for CEL EM3588 USB ZigBee stick (git-fixes).
• USB: serial: cp210x: fix comments for GE CS1000 (git-fixes).
• USB: serial: cp210x: fix comments for GE CS1000 (git-fixes).
• USB: serial: option: add support for u-blox LARA-R6 family (git-fixes).
• USB: usb-storage: Add LaCie Rugged USB3-FW to IGNORE_UAS (git-fixes).
• ath9k: Fix kernel NULL pointer dereference during ath_reset_internal() (git-fixes).
• can: ems_usb: fix memory leak (git-fixes).
• can: esd_usb2: fix memory leak (git-fixes).
• can: hi311x: fix a signedness bug in hi3110_cmd() (git-fixes).
• can: mcba_usb_start(): add missing urb->transfer_dma initialization (git-fixes).
• can: raw: raw_setsockopt(): fix raw_rcv panic for sock UAF (git-fixes).
• can: sja1000: sja1000_err(): do not count arbitration lose as an error (git-fixes).
• can: sun4i_can: sun4i_can_err(): do not count arbitration lose as an error (git-fixes).
• can: ti_hecc: Fix memleak in ti_hecc_probe (git-fixes).
• can: usb_8dev: fix memory leak (git-fixes).
• ceph: do not WARN if we're still opening a session to an MDS (bsc#1188750).
• cifs: Fix preauth hash corruption (git-fixes).
• cifs: Return correct error code from smb2_get_enc_key (git-fixes).
• cifs: Set CIFS_MOUNT_USE_PREFIX_PATH flag on setting cifs_sb->prepath (git-fixes).
• cifs: fix interrupted close commands (git-fixes).
• cifs: fix…

This update for the Linux Kernel 4.4.180-94_147 fixes several issues.

The following security issues were fixed:

• CVE-2021-37576: On the powerpc platform KVM guest OS users could cause host OS memory corruption via rtas_args.nargs (bsc#1188838).
• CVE-2021-28688: The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. (bsc#1183646)
• CVE-2020-0429: Fixed a potential local privilege escalation in l2tp_session_delete and related functions of l2tp_core.c (bsc#1176724).

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

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: 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 (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value (bnc#1186109 bnc#1186390 bnc#1188876).

• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).

• CVE-2021-42739: The firewire subsystem in the Linux kernel has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bnc#1184673).

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2021-42252: An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel Local attackers able to access the Aspeed LPC control interface could overwrite memory in…

The SUSE Linux Enterprise 12 SP2 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2017-5753: Systems with microprocessors utilizing speculative execution and branch prediction may have allowed unauthorized disclosure of information to an attacker with local user access via a side-channel analysis (bnc#1068032). Additional spectrev1 fixes were added to the eBPF code.

• CVE-2018-13405: The inode_init_owner function in fs/inode.c allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1087082 bnc#1100416 bnc#1129735).

• CVE-2018-16882: A use-after-free issue was found in the way the KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions and are vulnerable (bnc#1119934).

• CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption 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#1176724).

• CVE-2020-12655: An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767 (bnc#1171217).

• CVE-2020-14305: An out-of-bounds memory write flaw was found in how the Linux kernel’s Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allowed an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability (bnc#1173346).

• CVE-2020-3702: 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 (bnc#1191193).

• CVE-2021-20265: A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allowed an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability (bnc#1183089).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO…

The SUSE Linux Enterprise 12 SP3 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2020-12655: An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c. Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767 (bnc#1171217).

• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2017-17862: kernel/bpf/verifier.c in the Linux kernel ignores unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service (bnc#1073928).

• CVE-2017-17864: kernel/bpf/verifier.c in the Linux kernel mishandled states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allowed local users to obtain potentially sensitive address information, aka a 'pointer leak (bnc#1073928).

• CVE-2021-20265: A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allowed an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability (bnc#1183089).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3760: Fixed a use-after-free…

The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

The following security bugs were fixed:

• CVE-2021-0941: 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 (bnc#1192045).
• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).
• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)
• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails. (bsc#1191961)
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-37159: Fixed use-after-free and a double free inside hso_free_net_device in drivers/net/usb/hso.c when unregister_netdev is called without checking for the NETREG_REGISTERED state (bnc#1188601).
• CVE-2020-3702: Fixed a bug which could be triggered with specifically timed and handcrafted traffic and cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure. (bnc#1191193)
• CVE-2021-3752: Fixed a use after free vulnerability in the Linux kernel's bluetooth module. (bsc#1190023)
• CVE-2021-40490: Fixed a race condition discovered in the ext4 subsystem that could leat to local priviledge escalation. (bnc#1190159)
• CVE-2021-3744: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1189884)
• CVE-2021-3764: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1190534)
• CVE-2021-3772: Fixed a remote denial of service in the SCTP stack, if the attacker can spoof IP addresses and knows the IP-addresses and port numbers being used (bnc#1190351).
• CVE-2018-9517: Fixed possible memory corruption due to a use after free in pppol2tp_connect (bsc#1108488).
• CVE-2019-3874: Fixed possible denial of service attack via SCTP socket buffer used by a userspace applications…