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Ubuntu Desktop 22.04 Kernel LTS Security Advisory Bulletin 2040-13502-7

opensuse
Calendar Grey January 27, 2026
Dist Opensuse Esm H88
Critical security update for openSUSE addresses three key issues in the kernel RT, ensuring system integrity and fixing bugs.
An update that solves 3 vulnerabilities and has 3 bug fixes can now be installed.

Description

This update for the SUSE Linux Enterprise kernel 6.12.0-160000.6.1 fixes various security issues

The following security issues were fixed:

- CVE-2025-39963: io_uring: fix incorrect io_kiocb reference in io_link_skb (bsc#1251982).

- CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253437).

- CVE-2025-40212: nfsd: fix refcount leak in nfsd_set_fh_dentry() (bsc#1254196).

Patch instructions:

To install this openSUSE 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:

- openSUSE Leap 16.0

zypper in -t patch openSUSE-Leap-16.0-195=1

Patch

Package List

- openSUSE Leap 16.0:

kernel-livepatch-6_12_0-160000_6-rt-3-160000.1.1

References

* bsc#1251982

* bsc#1253437

* bsc#1254196

References:

* https://www.suse.com/security/cve/CVE-2025-39963.html

* https://www.suse.com/security/cve/CVE-2025-40204.html

* https://www.suse.com/security/cve/CVE-2025-40212.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:20112-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

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