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AUSCERT External Security Bulletin Redistribution
ESB-2021.2562
Security update for the Linux Kernel (Live Patch 21 for SLE 15 SP1)
29 July 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: SUSE
Operating System: SUSE
Impact/Access: Root Compromise -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-33909 CVE-2021-22555 CVE-2020-36385
Reference: ESB-2021.2548
ESB-2021.2547
Original Bulletin:
https://www.suse.com/support/update/announcement/2021/suse-su-20212542-1
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SUSE Security Update: Security update for the Linux Kernel (Live Patch 21 for
SLE 15 SP1)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:2542-1
Rating: important
References: #1187052 #1188117 #1188257
Cross-References: CVE-2020-36385 CVE-2021-22555 CVE-2021-33909
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP2
SUSE Linux Enterprise Module for Live Patching 15-SP1
______________________________________________________________________________
An update that fixes three vulnerabilities is now available.
Description:
This update for the Linux Kernel 4.12.14-197_78 fixes several issues.
The following security issues were fixed:
o CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that
allows to andobtain full root privileges. (bsc#1188062)
o CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/
x_tables.c that could allow local provilege escalation. (bsc#1188116)
o CVE-2020-36385: Fixed a use-after-free vulnerability reached via the
ctx_list in some ucma_migrate_id situations where ucma_close is called.
(bnc#1187050)
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-SP2:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2021-2542=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-2543=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-2544=1
o SUSE Linux Enterprise Module for Live Patching 15-SP1:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2021-2541=1
Package List:
o SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x
x86_64):
kernel-livepatch-5_3_18-24_43-default-9-2.2
kernel-livepatch-5_3_18-24_43-default-debuginfo-9-2.2
kernel-livepatch-5_3_18-24_46-default-9-2.2
kernel-livepatch-5_3_18-24_46-default-debuginfo-9-2.2
kernel-livepatch-5_3_18-24_49-default-8-2.2
kernel-livepatch-5_3_18-24_49-default-debuginfo-8-2.2
kernel-livepatch-SLE15-SP2_Update_10-debugsource-8-2.2
kernel-livepatch-SLE15-SP2_Update_8-debugsource-9-2.2
kernel-livepatch-SLE15-SP2_Update_9-debugsource-9-2.2
o SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):
kernel-livepatch-4_12_14-197_78-default-9-2.2
References:
o https://www.suse.com/security/cve/CVE-2020-36385.html
o https://www.suse.com/security/cve/CVE-2021-22555.html
o https://www.suse.com/security/cve/CVE-2021-33909.html
o https://bugzilla.suse.com/1187052
o https://bugzilla.suse.com/1188117
o https://bugzilla.suse.com/1188257
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