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AUSCERT External Security Bulletin Redistribution
ESB-2023.6391
Security update for the Linux Kernel (Live Patch 37 for SLE 12 SP5)
2 November 2023
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AusCERT Security Bulletin Summary
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Product: Linux Kernel (Live Patch 37 for SLE 12 SP5)
Publisher: SUSE
Operating System: SUSE
Resolution: Patch/Upgrade
CVE Names: CVE-2023-4623
Original Bulletin:
https://www.suse.com/support/update/announcement/2023/suse-su-20234321-1
Comment: CVSS (Max): 7.8 CVE-2023-4623 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: SUSE
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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Security update for the Linux Kernel (Live Patch 37 for SLE 12 SP5)
Announcement ID: SUSE-SU-2023:4321-1
Rating: important
References: o bsc#1215440
Cross-References: o CVE-2023-4623
o 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
CVSS scores: o 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
o SUSE Linux Enterprise High Performance Computing 12 SP5
o SUSE Linux Enterprise High Performance Computing 15 SP1
o SUSE Linux Enterprise Live Patching 15-SP1
Affected o SUSE Linux Enterprise Live Patching 12-SP5
Products: o SUSE Linux Enterprise Server 12 SP5
o SUSE Linux Enterprise Server 15 SP1
o SUSE Linux Enterprise Server for SAP Applications 12 SP5
o SUSE Linux Enterprise Server for SAP Applications 15 SP1
An update that solves one vulnerability can now be installed.
Description:
This update for the Linux Kernel 4.12.14-122_139 fixes one issue.
The following security issue was fixed:
o CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler
which could be exploited to achieve local privilege escalation (bsc#
1215440).
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:
o SUSE Linux Enterprise Live Patching 12-SP5
zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2023-4324=1
SUSE-SLE-Live-Patching-12-SP5-2023-4318=1
o SUSE Linux Enterprise Live Patching 15-SP1
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2023-4321=1
Package List:
o SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64)
kgraft-patch-4_12_14-122_139-default-11-2.3
kgraft-patch-4_12_14-122_159-default-6-2.2
o SUSE Linux Enterprise Live Patching 15-SP1 (ppc64le x86_64)
kernel-livepatch-4_12_14-150100_197_151-default-4-150100.2.2
References:
o https://www.suse.com/security/cve/CVE-2023-4623.html
o https://bugzilla.suse.com/show_bug.cgiid=1215440
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