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openSUSE Leap 15.5: Kernel Important Buffer Overflow Vuln 2026:0187-1

opensuse
Calendar Grey January 20, 2026
Dist Opensuse Esm H88
An important security advisory for openSUSE kernel addressing seven vulnerabilities, update details provided.
An update that solves seven vulnerabilities can now be installed.

Description

This update for the SUSE Linux Enterprise kernel 5.14.21-150500.55.121 fixes

various security issues

The following security issues were fixed:

* CVE-2022-50327: ACPI: processor: idle: Check acpi_fetch_acpi_dev() return

value (bsc#1254451).

* CVE-2022-50409: net: If sock is dead don't access sock's sk_wq in

sk_stream_wait_memory (bsc#1250665).

* CVE-2022-50490: bpf: Propagate error from htab_lock_bucket() to userspace

(bsc#1251165).

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

lio_target_nacl_info_show() (bsc#1251787).

* CVE-2025-38476: rpl: Fix use-after-free in rpl_do_srh_inline()

(bsc#1251203).

* CVE-2025-38572: ipv6: reject malicious packets in ipv6_gso_segment()

(bsc#1248400).

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

Topics%20covered

Topics Covered

security advisory security issue buffer overflow important Linux 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-2026-187=1

* SUSE Linux Enterprise Live Patching 15-SP5

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-187=1

Package List

* openSUSE Leap 15.5 (ppc64le s390x x86_64)

* kernel-livepatch-SLE15-SP5_Update_30-debugsource-5-150500.2.1

* kernel-livepatch-5_14_21-150500_55_121-default-debuginfo-5-150500.2.1

* kernel-livepatch-5_14_21-150500_55_121-default-5-150500.2.1

* SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)

* kernel-livepatch-SLE15-SP5_Update_30-debugsource-5-150500.2.1

* kernel-livepatch-5_14_21-150500_55_121-default-debuginfo-5-150500.2.1

* kernel-livepatch-5_14_21-150500_55_121-default-5-150500.2.1

References

* bsc#1248400

* bsc#1250665

* bsc#1251165

* bsc#1251203

* bsc#1251787

* bsc#1253437

* bsc#1254451

## References:

* https://www.suse.com/security/cve/CVE-2022-50327.html

* https://www.suse.com/security/cve/CVE-2022-50409.html

* https://www.suse.com/security/cve/CVE-2022-50490.html

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

* https://www.suse.com/security/cve/CVE-2025-38476.html

* https://www.suse.com/security/cve/CVE-2025-38572.html

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

* https://bugzilla.suse.com/show_bug.cgi?id=1248400

* https://bugzilla.suse.com/show_bug.cgi?id=1250665

* https://bugzilla.suse.com/show_bug.cgi?id=1251165

* https://bugzilla.suse.com/show_bug.cgi?id=1251203

* https://bugzilla.suse.com/show_bug.cgi?id=1251787

* https://bugzilla.suse.com/show_bug.cgi?id=1253437

* https://bugzilla.suse.com/show_bug.cgi?id=1254451

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:0187-1
Release Date: 2026-01-20T12:46:06Z
Affected Products: * openSUSE Leap 15.5 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise Live Patching 15-SP5 * SUSE Linux Enterprise Micro 5.5 * SUSE Linux Enterprise Real Time 15 SP5 * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server for SAP Applications 15 SP5

Topics%20covered

Topics Covered

security advisory security issue buffer overflow important Linux kernel OpenSUSE

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