Important: kernel-rt security update
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: media: rc: fix races with imon_disconnect() (CVE-2025-39993) * kernel: sctp: avoid NULL dereference when chunk data buffer is missing (CVE-2025-40240) * kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: media: rc: fix races with imon_disconnect() (CVE-2025-39993) * kernel: sctp: avoid NULL dereference when chunk data buffer is missing (CVE-2025-40240) * kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
05 / REFERENCES
Further evidence
- https://access.redhat.com/errata/RHSA-2026:0443
- https://access.redhat.com/security/cve/CVE-2025-39993
- https://access.redhat.com/security/cve/CVE-2025-40240
- https://access.redhat.com/security/cve/CVE-2025-68285
- https://bugzilla.redhat.com/2404121
- https://bugzilla.redhat.com/2418832
- https://bugzilla.redhat.com/2422801
- https://errata.almalinux.org/8/ALSA-2026-0443.html