SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2022:2478-1
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
                   
CVSS scores:
                    CVE-2017-16525 (NVD) : 6.6 CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2017-16525 (SUSE): 4.6 CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-26341 (NVD) : 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2021-26341 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2021-4157 (NVD) : 8 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-4157 (SUSE): 3.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
                    CVE-2022-1679 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-1679 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-20132 (NVD) : 4.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
                    CVE-2022-20132 (SUSE): 4.9 CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
                    CVE-2022-20141 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-20141 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-29900 (SUSE): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
                    CVE-2022-29901 (SUSE): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
                    CVE-2022-33981 (NVD) : 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
                    CVE-2022-33981 (SUSE): 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:
                    SUSE Linux Enterprise Server 12-SP3-BCL
______________________________________________________________________________

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

Description:

   The SUSE Linux Enterprise 12 SP3 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-SP3-BCL:

      zypper in -t patch SUSE-SLE-SERVER-12-SP3-BCL-2022-2478=1



Package List:

   - SUSE Linux Enterprise Server 12-SP3-BCL (noarch):

      kernel-devel-4.4.180-94.167.1
      kernel-macros-4.4.180-94.167.1
      kernel-source-4.4.180-94.167.1

   - SUSE Linux Enterprise Server 12-SP3-BCL (x86_64):

      kernel-default-4.4.180-94.167.1
      kernel-default-base-4.4.180-94.167.1
      kernel-default-base-debuginfo-4.4.180-94.167.1
      kernel-default-debuginfo-4.4.180-94.167.1
      kernel-default-debugsource-4.4.180-94.167.1
      kernel-default-devel-4.4.180-94.167.1
      kernel-syms-4.4.180-94.167.1


References:

   https://www.suse.com/security/cve/CVE-2017-16525.html
   https://www.suse.com/security/cve/CVE-2021-26341.html
   https://www.suse.com/security/cve/CVE-2021-4157.html
   https://www.suse.com/security/cve/CVE-2022-1679.html
   https://www.suse.com/security/cve/CVE-2022-20132.html
   https://www.suse.com/security/cve/CVE-2022-20141.html
   https://www.suse.com/security/cve/CVE-2022-29900.html
   https://www.suse.com/security/cve/CVE-2022-29901.html
   https://www.suse.com/security/cve/CVE-2022-33981.html
   https://bugzilla.suse.com/1066618
   https://bugzilla.suse.com/1146519
   https://bugzilla.suse.com/1194013
   https://bugzilla.suse.com/1196901
   https://bugzilla.suse.com/1199487
   https://bugzilla.suse.com/1199657
   https://bugzilla.suse.com/1200571
   https://bugzilla.suse.com/1200604
   https://bugzilla.suse.com/1200605
   https://bugzilla.suse.com/1200619
   https://bugzilla.suse.com/1200692
   https://bugzilla.suse.com/1201050
   https://bugzilla.suse.com/1201080