SUSE Security Update: Security update for the Linux Kernel (Live Patch 18 for SLE 15 SP2)
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Announcement ID:    SUSE-SU-2022:1194-1
Rating:             important
References:         #1195951 #1196959 #1197133 
Cross-References:   CVE-2021-39698 CVE-2022-22942 CVE-2022-27666
                   
CVSS scores:
                    CVE-2021-39698 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-39698 (SUSE): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-22942 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-27666 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-27666 (SUSE): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected Products:
                    SUSE Linux Enterprise High Performance Computing 15-SP2
                    SUSE Linux Enterprise Module for Live Patching 15-SP2
                    SUSE Linux Enterprise Server 15-SP2
                    SUSE Linux Enterprise Server for SAP Applications 15-SP2
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   An update that fixes three vulnerabilities is now available.

Description:

   This update for the Linux Kernel 5.3.18-24_78 fixes several issues.

   The following security issues were fixed:

   - CVE-2022-27666: Fixed a buffer overflow vulnerability in IPsec ESP
     transformation code. This flaw allowed a local attacker with a normal
     user privilege to overwrite kernel heap objects and may cause a local
     privilege escalation. (bnc#1197462)
   - CVE-2021-39698: Fixed a possible memory corruption due to a use after
     free in aio_poll_complete_work. This could lead to local escalation of
     privilege with no additional execution privileges needed. (bsc#1196956)
   - CVE-2022-22942: Fixed stale file descriptors on failed usercopy.
     (bsc#1195065)


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 Module for Live Patching 15-SP2:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2022-1194=1 SUSE-SLE-Module-Live-Patching-15-SP2-2022-1195=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x x86_64):

      kernel-livepatch-5_3_18-24_78-default-10-150200.2.1
      kernel-livepatch-5_3_18-24_78-default-debuginfo-10-150200.2.1
      kernel-livepatch-5_3_18-24_86-default-8-150200.2.1
      kernel-livepatch-5_3_18-24_86-default-debuginfo-8-150200.2.1
      kernel-livepatch-SLE15-SP2_Update_18-debugsource-10-150200.2.1
      kernel-livepatch-SLE15-SP2_Update_20-debugsource-8-150200.2.1


References:

   https://www.suse.com/security/cve/CVE-2021-39698.html
   https://www.suse.com/security/cve/CVE-2022-22942.html
   https://www.suse.com/security/cve/CVE-2022-27666.html
   https://bugzilla.suse.com/1195951
   https://bugzilla.suse.com/1196959
   https://bugzilla.suse.com/1197133