Security update for the Linux Kernel

Announcement ID: SUSE-SU-2022:0756-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2016-10905 ( SUSE ): 5.3 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
  • CVE-2016-10905 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2016-10905 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-0920 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-0920 ( NVD ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-0001 ( SUSE ): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2022-0001 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2022-0002 ( SUSE ): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2022-0002 ( NVD ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2022-0492 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-0492 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-0617 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2022-0617 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2022-24448 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  • CVE-2022-24448 ( NVD ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected Products:
  • SUSE Linux Enterprise High Performance Computing 12 SP2
  • SUSE Linux Enterprise Server 12 SP2
  • SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2

An update that solves seven vulnerabilities and has four security fixes can now be installed.

Description:

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

Transient execution side-channel attacks attacking the Branch History Buffer (BHB), named "Branch Target Injection" and "Intra-Mode Branch History Injection" are now mitigated.

The following security bugs were fixed:

  • CVE-2022-0001: Fixed Branch History Injection vulnerability (bsc#1191580).
  • CVE-2022-0002: Fixed Intra-Mode Branch Target Injection vulnerability (bsc#1191580).
  • CVE-2022-0617: Fixed a null pointer dereference in UDF file system functionality. A local user could crash the system by triggering udf_file_write_iter() via a malicious UDF image. (bsc#1196079)
  • CVE-2022-0492: Fixed a privilege escalation related to cgroups v1 release_agent feature, which allowed bypassing namespace isolation unexpectedly (bsc#1195543).
  • CVE-2022-24448: Fixed an issue in 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. If a regular file is found, ENOTDIR should have occured, but the server instead returned uninitialized data in the file descriptor (bsc#1195612).
  • CVE-2021-0920: Fixed a local privilege escalation due to a use-after-free bug in unix_gc (bsc#1193731).
  • CVE-2016-10905: Fixed a use-after-free is gfs2_clear_rgrpd() and read_rindex_entry() (bsc#1146312).

The following non-security bug was fixed:

  • net: sched: sch_teql: fix null-pointer dereference (bsc#1190717).

Special Instructions and Notes:

  • Please reboot the system after installing this update.

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2
    zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2022-756=1

Package List:

  • SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2 (nosrc x86_64)
    • kernel-default-4.4.121-92.169.1
  • SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2 (x86_64)
    • kernel-syms-4.4.121-92.169.1
    • kernel-default-base-4.4.121-92.169.1
    • kernel-default-devel-4.4.121-92.169.1
    • kernel-default-base-debuginfo-4.4.121-92.169.1
    • kernel-default-debuginfo-4.4.121-92.169.1
    • kernel-default-debugsource-4.4.121-92.169.1
  • SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2 (noarch)
    • kernel-source-4.4.121-92.169.1
    • kernel-macros-4.4.121-92.169.1
    • kernel-devel-4.4.121-92.169.1

References: