Alerts This Week
Warning Icon 1 764
Alerts This Week
Warning Icon 1 764

openSUSE 15.5 Kernel Important Security Advisory 2026-1077-1

opensuse
Calendar Grey March 26, 2026
Dist Opensuse Esm H88
An important security advisory for openSUSE 15.5 Kernel detailing 13 vulnerabilities and fixes. Update recommended.
An update that solves 13 vulnerabilities, contains one feature and has two security fixes can now be installed.

Description

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

issues

The following security issues were fixed:

* CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the

allocated buffer (bsc#1238917).

* CVE-2025-40242: gfs2: Fix unlikely race in gdlm_put_lock (bsc#1255075).

* CVE-2025-71066: net/sched: ets: Always remove class from active list before

deleting in ets_qdisc_change (bsc#1256645).

* CVE-2026-23004: dst: fix races in rt6_uncached_list_del() and

rt_del_uncached_list() (bsc#1257231).

* CVE-2026-23060: crypto: authencesn - reject too-short AAD (assoclen<8) to

match ESP/ESN spec (bsc#1257735).

* CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc

(bsc#1257749).

* CVE-2026-23089: ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()

(bsc#1257790).

* CVE-2026-23191: ALSA: aloop: Fix racy access at PCM trigger (bsc#1258395).

* CVE-2026-23204: net: add skb_header_pointer_careful()...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory security issue buffer overflow important kernel system update 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-2026-1077=1

* SUSE Linux Enterprise Micro 5.5

zypper in -t patch SUSE-SLE-Micro-5.5-2026-1077=1

Package List

* openSUSE Leap 15.5 (noarch)

* kernel-source-rt-5.14.21-150500.13.124.1

* kernel-devel-rt-5.14.21-150500.13.124.1

* openSUSE Leap 15.5 (x86_64)

* kernel-rt-extra-5.14.21-150500.13.124.1

* kernel-syms-rt-5.14.21-150500.13.124.1

* kernel-rt-livepatch-5.14.21-150500.13.124.1

* kernel-rt-optional-5.14.21-150500.13.124.1

* kernel-rt_debug-devel-5.14.21-150500.13.124.1

* kernel-rt-debugsource-5.14.21-150500.13.124.1

* dlm-kmp-rt-5.14.21-150500.13.124.1

* kernel-rt-debuginfo-5.14.21-150500.13.124.1

* kernel-rt-optional-debuginfo-5.14.21-150500.13.124.1

* kernel-rt_debug-devel-debuginfo-5.14.21-150500.13.124.1

* kernel-rt-livepatch-devel-5.14.21-150500.13.124.1

* kernel-rt_debug-vdso-5.14.21-150500.13.124.1

* gfs2-kmp-rt-debuginfo-5.14.21-150500.13.124.1

* kernel-rt-devel-5.14.21-150500.13.124.1

* gfs2-kmp-rt-5.14.21-150500.13.124.1

* kernel-rt_debug-debugsource-5.14.21-150500.13.124.1

* kernel-rt-vdso-debuginfo-5.14.21-150500.13.124.1

* kselftests-kmp-rt-5.14.21-150500.13.124.1

*...

Read the Full Advisory

References

* bsc#1238917

* bsc#1255075

* bsc#1256645

* bsc#1257231

* bsc#1257473

* bsc#1257732

* bsc#1257735

* bsc#1257749

* bsc#1257790

* bsc#1258340

* bsc#1258395

* bsc#1258518

* bsc#1258849

* bsc#1258850

* bsc#1259857

* jsc#PED-12836

## References:

* https://www.suse.com/security/cve/CVE-2025-21738.html

* https://www.suse.com/security/cve/CVE-2025-40242.html

* https://www.suse.com/security/cve/CVE-2025-71066.html

* https://www.suse.com/security/cve/CVE-2026-23004.html

* https://www.suse.com/security/cve/CVE-2026-23054.html

* https://www.suse.com/security/cve/CVE-2026-23060.html

* https://www.suse.com/security/cve/CVE-2026-23074.html

* https://www.suse.com/security/cve/CVE-2026-23089.html

* https://www.suse.com/security/cve/CVE-2026-23191.html

* https://www.suse.com/security/cve/CVE-2026-23204.html

* https://www.suse.com/security/cve/CVE-2026-23209.html

* https://www.suse.com/security/cve/CVE-2026-23268.html

* https://www.suse.com/security/cve/CVE-2026-23269.html

* https://bugzilla.suse.com/show_bug.cgi?id=1238917

*...

Read the Full Advisory

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1077-1
Release Date: 2026-03-26T12:42:31Z
Affected Products: * openSUSE Leap 15.5 * SUSE Linux Enterprise Micro 5.5

Topics%20covered

Topics Covered

security advisory security issue buffer overflow important kernel system update OpenSUSE

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here