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openSUSE: Kernel Important Buffer Overflow Security Fix 2026:0034-1

opensuse
Calendar Grey January 6, 2026
Dist Opensuse Esm H88
An important update for openSUSE addresses eight vulnerabilities in the Linux kernel, including a critical buffer overflow fix.
An update that solves eight vulnerabilities and has one security fix can now be installed.

Description

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to receive various

security bugfixes.

The following security bugs were fixed:

* CVE-2022-50280: pnode: terminate at peers of source (bsc#1249806).

* CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in

lio_target_nacl_info_show() (bsc#1251786).

* CVE-2024-53093: nvme-multipath: defer partition scanning (bsc#1233640).

* CVE-2025-40040: mm/ksm: fix flag-dropping behavior in ksm_madvise

(bsc#1252780).

* CVE-2025-40048: uio_hv_generic: Let userspace take care of interrupt mask

(bsc#1252862).

* CVE-2025-40121: ASoC: Intel: bytcr_rt5651: Fix invalid quirk input mapping

(bsc#1253367).

* CVE-2025-40154: ASoC: Intel: bytcr_rt5640: Fix invalid quirk input mapping

(bsc#1253431).

* CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253436).

The following non-security bugs were fixed:

* Fix type signess in fbcon_set_font() (bsc#1252033).

* scsi: storvsc: Prefer returning...

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Topics%20covered

Topics Covered

security advisory buffer overflow patch important kernel OpenSUSE

Patch

## 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:

* openSUSE Leap 15.5

zypper in -t patch SUSE-2026-34=1

* SUSE Linux Enterprise Micro 5.5

zypper in -t patch SUSE-SLE-Micro-5.5-2026-34=1

Package List

* openSUSE Leap 15.5 (noarch)

* kernel-devel-rt-5.14.21-150500.13.115.1

* kernel-source-rt-5.14.21-150500.13.115.1

* openSUSE Leap 15.5 (x86_64)

* kernel-rt-devel-debuginfo-5.14.21-150500.13.115.2

* kernel-rt_debug-debuginfo-5.14.21-150500.13.115.2

* ocfs2-kmp-rt-debuginfo-5.14.21-150500.13.115.2

* kernel-rt-vdso-debuginfo-5.14.21-150500.13.115.2

* reiserfs-kmp-rt-5.14.21-150500.13.115.2

* kernel-rt_debug-vdso-5.14.21-150500.13.115.2

* kernel-syms-rt-5.14.21-150500.13.115.1

* kselftests-kmp-rt-debuginfo-5.14.21-150500.13.115.2

* kernel-rt-extra-5.14.21-150500.13.115.2

* kernel-rt-optional-5.14.21-150500.13.115.2

* kernel-rt-livepatch-devel-5.14.21-150500.13.115.2

* ocfs2-kmp-rt-5.14.21-150500.13.115.2

* kernel-rt-livepatch-5.14.21-150500.13.115.2

* dlm-kmp-rt-5.14.21-150500.13.115.2

* kernel-rt-debugsource-5.14.21-150500.13.115.2

* kernel-rt-vdso-5.14.21-150500.13.115.2

* cluster-md-kmp-rt-5.14.21-150500.13.115.2

* kernel-rt_debug-debugsource-5.14.21-150500.13.115.2

*...

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References

* bsc#1233640

* bsc#1249806

* bsc#1251786

* bsc#1252267

* bsc#1252780

* bsc#1252862

* bsc#1253367

* bsc#1253431

* bsc#1253436

## References:

* https://www.suse.com/security/cve/CVE-2022-50280.html

* https://www.suse.com/security/cve/CVE-2023-53676.html

* https://www.suse.com/security/cve/CVE-2024-53093.html

* https://www.suse.com/security/cve/CVE-2025-40040.html

* https://www.suse.com/security/cve/CVE-2025-40048.html

* https://www.suse.com/security/cve/CVE-2025-40121.html

* https://www.suse.com/security/cve/CVE-2025-40154.html

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

* https://bugzilla.suse.com/show_bug.cgi?id=1233640

* https://bugzilla.suse.com/show_bug.cgi?id=1249806

* https://bugzilla.suse.com/show_bug.cgi?id=1251786

* https://bugzilla.suse.com/show_bug.cgi?id=1252267

* https://bugzilla.suse.com/show_bug.cgi?id=1252780

* https://bugzilla.suse.com/show_bug.cgi?id=1252862

* https://bugzilla.suse.com/show_bug.cgi?id=1253367

* https://bugzilla.suse.com/show_bug.cgi?id=1253431

*...

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Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:0034-1
Release Date: 2026-01-05T19:29:30Z
Affected Products: * openSUSE Leap 15.5 * SUSE Linux Enterprise Micro 5.5

Topics%20covered

Topics Covered

security advisory buffer overflow patch important kernel OpenSUSE

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