Issued:
2026-02-11
Updated:
2026-02-11

RHSA-2026:2583 - Moderate: kernel-rt security update

Synopsis

Moderate: kernel-rt security update

Type/Severity

Security Advisory Moderate

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem (CVE-2025-38022)

  • kernel: smb: client: Fix use-after-free in cifs_fill_dirent (CVE-2025-38051)

  • kernel: Bluetooth: hci_event: call disconnect callback before deleting conn (CVE-2023-53673)

  • kernel: drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies (CVE-2025-40096)

  • kernel: mptcp: fix race condition in mptcp_schedule_work() (CVE-2025-40258)

  • kernel: devlink: rate: Unset parent pointer in devl_rate_nodes_destroy (CVE-2025-40251)

  • kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. (CVE-2025-40304)

  • kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling (CVE-2025-40322)

  • kernel: drm/i915: Fix NULL ptr deref by checking new_crtc_state (CVE-2023-53833)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions9.2x86_64

Updated Packages

  • kernel-rt-debug-kvm-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-modules-core-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-debug-core-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-devel-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-debug-modules-extra-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-debug-modules-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-kvm-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-modules-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-debug-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-debug-devel-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-core-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-debug-modules-core-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-5.14.0-284.156.1.rt14.441.el9_2.src.rpm
  • kernel-rt-debuginfo-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-modules-extra-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm
  • kernel-rt-debug-debuginfo-5.14.0-284.156.1.rt14.441.el9_2.x86_64.rpm

Fixes

CVEs

References

Additional information