ESB-2026.4571
PUBLISHED
CVSS 7.800000190734863 HIGH
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2026.4571
Security update for the Linux Kernel
5 May 2026
===========================================================================
AUSCERT Security Bulletin Summary
---------------------------------
Product: Linux Kernel
Publisher: SUSE
Operating System: SUSE
Resolution: Patch/Upgrade
CVE Names: CVE-2026-31431
Original Bulletin:
https://www.suse.com/support/update/announcement/2026/suse-su-202621460-1
Comment: CVSS (Max): 7.8 CVE-2026-31431 (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
The following are listed in the CISA Known Exploited Vulnerabilities (KEV) Catalog:
CISA KEV CVE(s): CVE-2026-31431
CISA KEV URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
EPSS (Max): 4.0% (88th) CVE-2026-31431 2026-05-03
- --------------------------BEGIN INCLUDED TEXT--------------------
Security update for the Linux Kernel
Announcement ID: SUSE-SU-2026:21460-1
Release Date: 2026-05-02T07:09:30Z
Rating: important
References: o bsc#1262573
Cross-References: o CVE-2026-31431
o CVE-2026-31431 ( 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-2026-31431 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
S:U/C:H/I:H/A:H
Affected o SUSE Linux Micro 6.2
Products: o SUSE Linux Micro Extras 6.2
An update that solves one vulnerability can now be installed.
Description:
The SUSE Linux Enterprise 16.0 kernel was updated to fix various security
issues
The following security issues were fixed:
o CVE-2026-31431: The copy.fail security issue is fixed by revert to
operating out-of-place in algif_aead (bsc#1262573).
Special Instructions and Notes:
o 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:
o SUSE Linux Micro Extras 6.2
zypper in -t patch SUSE-SLE-Micro-Extras-6.2-666=1
Package List:
o SUSE Linux Micro Extras 6.2 (aarch64 ppc64le s390x x86_64)
kernel-obs-build-debugsource-6.12.0-160000.29.1
kernel-syms-6.12.0-160000.29.1
kernel-obs-build-6.12.0-160000.29.1
References:
o https://www.suse.com/security/cve/CVE-2026-31431.html
o https://bugzilla.suse.com/show_bug.cgi?id=1262573
- --------------------------END INCLUDED TEXT----------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AUSCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AUSCERT's members. As
AUSCERT did not write the document quoted above, AUSCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AUSCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://portal.auscert.org.au/bulletins/
===========================================================================
AUSCERT
The University of Queensland, Brisbane QLD 4072 Australia
e: auscert@auscert.org.au
t: +61 (0)7 3365 4417
Allies in Cyber Security
===========================================================================