Security update for the Linux Kernel
The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2021-47110: Fixed possible memory corruption when restoring from hibernation in x86/kvm (bsc#1221532). - CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the allocated buffer (bsc#1238917). - 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). The following non-security bugs were fixed: - Disable CONFIG_NET_SCH_ATM (jsc#PED-12836).
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2021-47110: Fixed possible memory corruption when restoring from hibernation in x86/kvm (bsc#1221532). - CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the allocated buffer (bsc#1238917). - 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). The following non-security bugs were fixed: - Disable CONFIG_NET_SCH_ATM (jsc#PED-12836).
05 / REFERENCES
Further evidence
- https://bugzilla.suse.com/1221532
- https://bugzilla.suse.com/1238917
- https://bugzilla.suse.com/1257749
- https://bugzilla.suse.com/1257790
- https://bugzilla.suse.com/1258395
- https://www.suse.com/security/cve/CVE-2021-47110
- https://www.suse.com/security/cve/CVE-2025-21738
- https://www.suse.com/security/cve/CVE-2026-23074
- https://www.suse.com/security/cve/CVE-2026-23089
- https://www.suse.com/security/cve/CVE-2026-23191
- https://www.suse.com/support/update/announcement/2026/suse-su-20261130-1/