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AUSCERT External Security Bulletin Redistribution
ESB-2021.2423
Security update for the Linux Kernel (Live Patch 13 for SLE 15 SP2)
19 July 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: linux kernel
Publisher: SUSE
Operating System: SUSE
Impact/Access: Root Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-23133
Reference: ESB-2021.2409
ESB-2021.2249
ESB-2021.2221
Original Bulletin:
https://www.suse.com/support/update/announcement/2021/suse-su-20212384-1
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SUSE Security Update: Security update for the Linux Kernel (Live Patch 13 for
SLE 15 SP2)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:2384-1
Rating: important
References: #1185901
Cross-References: CVE-2021-23133
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP3
SUSE Linux Enterprise Module for Live Patching 15-SP2
______________________________________________________________________________
An update that fixes one vulnerability is now available.
Description:
This update for the Linux Kernel 5.3.18-24_64 fixes one issue.
The following security issue was fixed:
o CVE-2021-23133: Fixed a race condition in the SCTP sockets that can lead to
kernel privilege escalation from the context of a network service or an
unprivileged process. (bsc#1185901)
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:
o SUSE Linux Enterprise Module for Live Patching 15-SP3:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2021-2384=1
o SUSE Linux Enterprise Module for Live Patching 15-SP2:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2021-2378=1
Package List:
o SUSE Linux Enterprise Module for Live Patching 15-SP3 (ppc64le s390x
x86_64):
kernel-livepatch-5_3_18-57-default-3-3.1
kernel-livepatch-5_3_18-57-default-debuginfo-3-3.1
kernel-livepatch-SLE15-SP3_Update_0-debugsource-3-3.1
o SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x
x86_64):
kernel-livepatch-5_3_18-24_64-default-3-2.1
kernel-livepatch-5_3_18-24_64-default-debuginfo-3-2.1
kernel-livepatch-SLE15-SP2_Update_13-debugsource-3-2.1
References:
o https://www.suse.com/security/cve/CVE-2021-23133.html
o https://bugzilla.suse.com/1185901
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The University of Queensland
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