SUSE-SU-2021:2560-1: important: Security update for the Linux Kernel (Live Patch 22 for SLE 15 SP1)
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Thu Jul 29 16:18:43 UTC 2021
SUSE Security Update: Security update for the Linux Kernel (Live Patch 22 for SLE 15 SP1)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:2560-1
Rating: important
References: #1187052 #1188117 #1188257
Cross-References: CVE-2020-36385 CVE-2021-22555 CVE-2021-33909
CVSS scores:
CVE-2020-36385 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2020-36385 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2021-22555 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-22555 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-33909 (SUSE): 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 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_83 fixes several issues.
The following security issues were fixed:
- CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer
that allows to andobtain full root privileges. (bsc#1188062)
- CVE-2021-22555: Fixed an heap out-of-bounds write in
net/netfilter/x_tables.c that could allow local provilege escalation.
(bsc#1188116)
- 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:
- SUSE Linux Enterprise Module for Live Patching 15-SP1:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2021-2560=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-2561=1
Package List:
- SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):
kernel-livepatch-4_12_14-197_56-default-12-2.2
kernel-livepatch-4_12_14-197_83-default-8-2.2
References:
https://www.suse.com/security/cve/CVE-2020-36385.html
https://www.suse.com/security/cve/CVE-2021-22555.html
https://www.suse.com/security/cve/CVE-2021-33909.html
https://bugzilla.suse.com/1187052
https://bugzilla.suse.com/1188117
https://bugzilla.suse.com/1188257
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