Security update for the Linux Kernel

SUSE Security Update: Security update for the Linux Kernel
Announcement ID: SUSE-SU-2022:2379-1
Rating: important
References: #1066618 #1146519 #1194013 #1196901 #1199487 #1199657 #1200571 #1200604 #1200605 #1200619 #1200692 #1201050 #1201080
Cross-References:CVE-2017-16525 CVE-2021-26341 CVE-2021-4157 CVE-2022-1679 CVE-2022-20132 CVE-2022-20141 CVE-2022-29900 CVE-2022-29901 CVE-2022-33981
Affected Products:
  • SUSE Linux Enterprise Server 12-SP2-BCL

An update that solves 9 vulnerabilities and has four fixes is now available.


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

The following security bugs were fixed:

  • CVE-2022-29900, CVE-2022-29901: Fixed the RETBLEED attack, a new Spectre like Branch Target Buffer attack, that can leak arbitrary kernel information (bsc#1199657).
  • CVE-2022-1679: Fixed a use-after-free in the Atheros wireless driver in the way a user forces the ath9k_htc_wait_for_target function to fail with some input messages (bsc#1199487).
  • CVE-2022-20132: Fixed out of bounds read due to improper input validation in lg_probe and related functions of hid-lg.c (bsc#1200619).
  • CVE-2022-33981: Fixed use-after-free in floppy driver (bsc#1200692)
  • CVE-2022-20141: Fixed a possible use after free due to improper locking in ip_check_mc_rcu() (bsc#1200604).
  • CVE-2021-4157: Fixed an out of memory bounds write flaw in the NFS subsystem, related to the replication of files with NFS. A user could potentially crash the system or escalate privileges on the system (bsc#1194013).
  • CVE-2021-26341: Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage (bsc#1201050).
  • CVE-2017-16525: Fixed a use-after-free after failed setup in usb/serial/console (bsc#1066618).

The following non-security bugs were fixed:
  • exec: Force single empty string when argv is empty (bsc#1200571).

Special Instructions and Notes:

Please reboot the system after installing this update.

Patch Instructions:

To install this SUSE Security 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:
    zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2022-2379=1

Package List:

  • SUSE Linux Enterprise Server 12-SP2-BCL (noarch):
    • kernel-devel-4.4.121-92.178.1
    • kernel-macros-4.4.121-92.178.1
    • kernel-source-4.4.121-92.178.1
  • SUSE Linux Enterprise Server 12-SP2-BCL (x86_64):
    • kernel-default-4.4.121-92.178.1
    • kernel-default-base-4.4.121-92.178.1
    • kernel-default-base-debuginfo-4.4.121-92.178.1
    • kernel-default-debuginfo-4.4.121-92.178.1
    • kernel-default-debugsource-4.4.121-92.178.1
    • kernel-default-devel-4.4.121-92.178.1
    • kernel-syms-4.4.121-92.178.1