SUSE Security Update: Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP4)
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Announcement ID:    SUSE-SU-2022:3108-1
Rating:             important
References:         #1196867 #1201941 #1202163 
Cross-References:   CVE-2020-36516 CVE-2022-2585 CVE-2022-36946
                   
CVSS scores:
                    CVE-2020-36516 (NVD) : 5.9 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
                    CVE-2020-36516 (SUSE): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
                    CVE-2022-2585 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
                    CVE-2022-36946 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
                    CVE-2022-36946 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:
                    SUSE Linux Enterprise High Performance Computing 15-SP4
                    SUSE Linux Enterprise Module for Live Patching 15-SP4
                    SUSE Linux Enterprise Server 15-SP4
                    SUSE Linux Enterprise Server for SAP Applications 15-SP4
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   An update that fixes three vulnerabilities is now available.

Description:

   This update for the Linux Kernel 5.14.21-150400_22 fixes several issues.

   The following security issues were fixed:
   - CVE-2020-36516: Fixed an off-path attack via mixed IPID assignment
     method with the hash-based IPID assignment policy to inject data into a
     victim's TCP session or terminate that session (bsc#1196867).
   - CVE-2022-2585: Fixed use-after-free in POSIX CPU timer (bsc#1202163).
   - CVE-2022-36946: Fixed a remote denial of service attack inside
     nfqnl_mangle in net/netfilter/nfnetlink_queue.c, in the case of an
     nf_queue verdict with a one-byte nfta_payload attribute, an skb_pull can
     encounter a negative length (bsc#1201941).


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-SP4:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2022-3108=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15-SP4 (ppc64le s390x x86_64):

      kernel-livepatch-5_14_21-150400_22-default-5-150400.4.12.3
      kernel-livepatch-5_14_21-150400_22-default-debuginfo-5-150400.4.12.3
      kernel-livepatch-SLE15-SP4_Update_0-debugsource-5-150400.4.12.3


References:

   https://www.suse.com/security/cve/CVE-2020-36516.html
   https://www.suse.com/security/cve/CVE-2022-2585.html
   https://www.suse.com/security/cve/CVE-2022-36946.html
   https://bugzilla.suse.com/1196867
   https://bugzilla.suse.com/1201941
   https://bugzilla.suse.com/1202163