Security update for the Linux Kernel

Announcement ID:	SUSE-SU-2023:4030-1
Rating:	important
References:	bsc#1207036 bsc#1208995 bsc#1210169 bsc#1210643 bsc#1212703 bsc#1214233 bsc#1214351 bsc#1214380 bsc#1214386 bsc#1215115 bsc#1215117 bsc#1215150 bsc#1215221 bsc#1215275 bsc#1215299
Cross-References:	CVE-2020-36766 CVE-2023-1192 CVE-2023-1206 CVE-2023-1859 CVE-2023-2177 CVE-2023-23454 CVE-2023-40283 CVE-2023-42753 CVE-2023-4389 CVE-2023-4622 CVE-2023-4623 CVE-2023-4881 CVE-2023-4921
CVSS scores:	CVE-2020-36766 ( SUSE ): 2.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N CVE-2020-36766 ( NVD ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVE-2023-1192 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-1192 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-1206 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2023-1206 ( NVD ): 5.7 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-1859 ( SUSE ): 1.9 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L CVE-2023-1859 ( NVD ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-2177 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-2177 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-23454 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-23454 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-40283 ( SUSE ): 5.7 CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVE-2023-40283 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-42753 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-42753 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-4389 ( SUSE ): 5.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H CVE-2023-4389 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVE-2023-4622 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-4622 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-4623 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-4623 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-4881 ( SUSE ): 6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L CVE-2023-4881 ( NVD ): 6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H CVE-2023-4921 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-4921 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:	SUSE Linux Enterprise High Availability Extension 15 SP2 SUSE Linux Enterprise High Performance Computing 15 SP2 SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS 15-SP2 SUSE Linux Enterprise Live Patching 15-SP2 SUSE Linux Enterprise Server 15 SP2 SUSE Linux Enterprise Server 15 SP2 Business Critical Linux 15-SP2 SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 SUSE Linux Enterprise Server for SAP Applications 15 SP2 SUSE Manager Proxy 4.1 SUSE Manager Retail Branch Server 4.1 SUSE Manager Server 4.1

An update that solves 13 vulnerabilities and has two security fixes can now be installed.

Description:

The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351).
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table which could be exploited by network adjacent attackers, increasing CPU usage by 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-23454: Fixed a type-confusion in the CBQ network scheduler (bsc#1207036).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2020-36766: Fixed a potential information leak in in the CEC driver (bsc#1215299).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system (bsc#1210643).
• CVE-2023-4881: Fixed an out-of-bounds write flaw in the netfilter subsystem that could lead to information disclosure or denial of service (bsc#1215221).
• CVE-2023-40283: Fixed a use-after-free issue in the Bluetooth subsystem (bsc#1214233).
• CVE-2023-1192: Fixed a use-after-free in the CIFS subsystem (bsc#1208995).

The following non-security bugs were fixed:

• check-for-config-changes: ignore BUILTIN_RETURN_ADDRESS_STRIPS_PAC (bsc#1214380).
• mkspec: Allow unsupported KMPs (bsc#1214386)
• rpm/mkspec-dtb: support for nested subdirs.
• x86/srso: Do not probe microcode in a guest (git-fixes).
• x86/srso: Fix SBPB enablement for spec_rstack_overflow=off (git-fixes).
• x86/srso: Fix srso_show_state() side effect (git-fixes).
• x86/srso: Set CPUID feature bits independently of bug or mitigation status (git-fixes).

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 Live Patching 15-SP2
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2023-4030=1
• SUSE Linux Enterprise High Availability Extension 15 SP2
  zypper in -t patch SUSE-SLE-Product-HA-15-SP2-2023-4030=1
• SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS 15-SP2
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP2-LTSS-2023-4030=1
• SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP2-LTSS-2023-4030=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP2
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP2-2023-4030=1

Package List:

• SUSE Linux Enterprise Live Patching 15-SP2 (nosrc)
  • kernel-default-5.3.18-150200.24.166.1
• SUSE Linux Enterprise Live Patching 15-SP2 (ppc64le s390x x86_64)
  • kernel-default-livepatch-5.3.18-150200.24.166.1
  • kernel-default-debugsource-5.3.18-150200.24.166.1
  • kernel-default-livepatch-devel-5.3.18-150200.24.166.1
  • kernel-default-debuginfo-5.3.18-150200.24.166.1
  • kernel-livepatch-SLE15-SP2_Update_41-debugsource-1-150200.5.3.1
  • kernel-livepatch-5_3_18-150200_24_166-default-debuginfo-1-150200.5.3.1
  • kernel-livepatch-5_3_18-150200_24_166-default-1-150200.5.3.1
• SUSE Linux Enterprise High Availability Extension 15 SP2 (aarch64 ppc64le s390x x86_64)
  • kernel-default-debugsource-5.3.18-150200.24.166.1
  • ocfs2-kmp-default-5.3.18-150200.24.166.1
  • dlm-kmp-default-5.3.18-150200.24.166.1
  • ocfs2-kmp-default-debuginfo-5.3.18-150200.24.166.1
  • cluster-md-kmp-default-debuginfo-5.3.18-150200.24.166.1
  • kernel-default-debuginfo-5.3.18-150200.24.166.1
  • dlm-kmp-default-debuginfo-5.3.18-150200.24.166.1
  • gfs2-kmp-default-5.3.18-150200.24.166.1
  • gfs2-kmp-default-debuginfo-5.3.18-150200.24.166.1
  • cluster-md-kmp-default-5.3.18-150200.24.166.1
• SUSE Linux Enterprise High Availability Extension 15 SP2 (nosrc)
  • kernel-default-5.3.18-150200.24.166.1
• SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS 15-SP2 (aarch64 nosrc x86_64)
  • kernel-default-5.3.18-150200.24.166.1
  • kernel-preempt-5.3.18-150200.24.166.1
• SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS 15-SP2 (aarch64 x86_64)
  • kernel-default-debugsource-5.3.18-150200.24.166.1
  • kernel-syms-5.3.18-150200.24.166.1
  • kernel-default-base-5.3.18-150200.24.166.1.150200.9.83.1
  • kernel-preempt-debuginfo-5.3.18-150200.24.166.1
  • kernel-default-debuginfo-5.3.18-150200.24.166.1
  • kernel-default-devel-5.3.18-150200.24.166.1
  • kernel-default-devel-debuginfo-5.3.18-150200.24.166.1
  • kernel-preempt-debugsource-5.3.18-150200.24.166.1
  • kernel-obs-build-debugsource-5.3.18-150200.24.166.1
  • kernel-preempt-devel-debuginfo-5.3.18-150200.24.166.1
  • kernel-preempt-devel-5.3.18-150200.24.166.1
  • kernel-obs-build-5.3.18-150200.24.166.1
• SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS 15-SP2 (noarch)
  • kernel-source-5.3.18-150200.24.166.1
  • kernel-macros-5.3.18-150200.24.166.1
  • kernel-devel-5.3.18-150200.24.166.1
• SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS 15-SP2 (noarch nosrc)
  • kernel-docs-5.3.18-150200.24.166.2
• SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 (aarch64 ppc64le s390x x86_64 nosrc)
  • kernel-default-5.3.18-150200.24.166.1
• SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 (aarch64 ppc64le s390x x86_64)
  • kernel-default-debugsource-5.3.18-150200.24.166.1
  • kernel-syms-5.3.18-150200.24.166.1
  • kernel-default-base-5.3.18-150200.24.166.1.150200.9.83.1
  • kernel-default-debuginfo-5.3.18-150200.24.166.1
  • kernel-default-devel-5.3.18-150200.24.166.1
  • kernel-default-devel-debuginfo-5.3.18-150200.24.166.1
  • reiserfs-kmp-default-debuginfo-5.3.18-150200.24.166.1
  • kernel-obs-build-debugsource-5.3.18-150200.24.166.1
  • reiserfs-kmp-default-5.3.18-150200.24.166.1
  • kernel-obs-build-5.3.18-150200.24.166.1
• SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 (noarch)
  • kernel-source-5.3.18-150200.24.166.1
  • kernel-macros-5.3.18-150200.24.166.1
  • kernel-devel-5.3.18-150200.24.166.1
• SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 (noarch nosrc)
  • kernel-docs-5.3.18-150200.24.166.2
• SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 (aarch64 nosrc x86_64)
  • kernel-preempt-5.3.18-150200.24.166.1
• SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 (aarch64 x86_64)
  • kernel-preempt-debuginfo-5.3.18-150200.24.166.1
  • kernel-preempt-devel-debuginfo-5.3.18-150200.24.166.1
  • kernel-preempt-debugsource-5.3.18-150200.24.166.1
  • kernel-preempt-devel-5.3.18-150200.24.166.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP2 (nosrc ppc64le x86_64)
  • kernel-default-5.3.18-150200.24.166.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP2 (ppc64le x86_64)
  • kernel-default-debugsource-5.3.18-150200.24.166.1
  • kernel-syms-5.3.18-150200.24.166.1
  • kernel-default-base-5.3.18-150200.24.166.1.150200.9.83.1
  • kernel-default-debuginfo-5.3.18-150200.24.166.1
  • kernel-default-devel-5.3.18-150200.24.166.1
  • kernel-default-devel-debuginfo-5.3.18-150200.24.166.1
  • reiserfs-kmp-default-debuginfo-5.3.18-150200.24.166.1
  • kernel-obs-build-debugsource-5.3.18-150200.24.166.1
  • reiserfs-kmp-default-5.3.18-150200.24.166.1
  • kernel-obs-build-5.3.18-150200.24.166.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP2 (noarch)
  • kernel-source-5.3.18-150200.24.166.1
  • kernel-macros-5.3.18-150200.24.166.1
  • kernel-devel-5.3.18-150200.24.166.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP2 (noarch nosrc)
  • kernel-docs-5.3.18-150200.24.166.2
• SUSE Linux Enterprise Server for SAP Applications 15 SP2 (nosrc x86_64)
  • kernel-preempt-5.3.18-150200.24.166.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP2 (x86_64)
  • kernel-preempt-debuginfo-5.3.18-150200.24.166.1
  • kernel-preempt-devel-debuginfo-5.3.18-150200.24.166.1
  • kernel-preempt-debugsource-5.3.18-150200.24.166.1
  • kernel-preempt-devel-5.3.18-150200.24.166.1

References:

• https://www.suse.com/security/cve/CVE-2020-36766.html
• https://www.suse.com/security/cve/CVE-2023-1192.html
• https://www.suse.com/security/cve/CVE-2023-1206.html
• https://www.suse.com/security/cve/CVE-2023-1859.html
• https://www.suse.com/security/cve/CVE-2023-2177.html
• https://www.suse.com/security/cve/CVE-2023-23454.html
• https://www.suse.com/security/cve/CVE-2023-40283.html
• https://www.suse.com/security/cve/CVE-2023-42753.html
• https://www.suse.com/security/cve/CVE-2023-4389.html
• https://www.suse.com/security/cve/CVE-2023-4622.html
• https://www.suse.com/security/cve/CVE-2023-4623.html
• https://www.suse.com/security/cve/CVE-2023-4881.html
• https://www.suse.com/security/cve/CVE-2023-4921.html
• https://bugzilla.suse.com/show_bug.cgi?id=1207036
• https://bugzilla.suse.com/show_bug.cgi?id=1208995
• https://bugzilla.suse.com/show_bug.cgi?id=1210169
• https://bugzilla.suse.com/show_bug.cgi?id=1210643
• https://bugzilla.suse.com/show_bug.cgi?id=1212703
• https://bugzilla.suse.com/show_bug.cgi?id=1214233
• https://bugzilla.suse.com/show_bug.cgi?id=1214351
• https://bugzilla.suse.com/show_bug.cgi?id=1214380
• https://bugzilla.suse.com/show_bug.cgi?id=1214386
• https://bugzilla.suse.com/show_bug.cgi?id=1215115
• https://bugzilla.suse.com/show_bug.cgi?id=1215117
• https://bugzilla.suse.com/show_bug.cgi?id=1215150
• https://bugzilla.suse.com/show_bug.cgi?id=1215221
• https://bugzilla.suse.com/show_bug.cgi?id=1215275
• https://bugzilla.suse.com/show_bug.cgi?id=1215299