RHSA-2026:41234HighCVSS 7.8

Red Hat Security Advisory: kernel-rt security update

Published
July 17, 2026
Last Modified
October 30, 2026

🔗 CVE IDs covered (4)

CVE-2026-31684 →CVE-2026-43499 →CVE-2026-46116 →CVE-2026-53166 →

📋 Description

CVE-2026-31684 — kernel: net: sched: act_csum: validate nested VLAN headers CVE-2026-43499 — kernel: rtmutex: Use waiter::task instead of current in remove_waiter() CVE-2026-46116 — kernel: xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete CVE-2026-53166 — kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock

🎯 Affected products13

  • Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-0:3.10.0-1160.156.1.rt56.1308.el7.src as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-0:3.10.0-1160.156.1.rt56.1308.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debug-0:3.10.0-1160.156.1.rt56.1308.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debug-debuginfo-0:3.10.0-1160.156.1.rt56.1308.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debug-devel-0:3.10.0-1160.156.1.rt56.1308.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debuginfo-0:3.10.0-1160.156.1.rt56.1308.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debuginfo-common-x86_64-0:3.10.0-1160.156.1.rt56.1308.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-devel-0:3.10.0-1160.156.1.rt56.1308.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-doc-0:3.10.0-1160.156.1.rt56.1308.el7.noarch as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-trace-0:3.10.0-1160.156.1.rt56.1308.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-trace-debuginfo-0:3.10.0-1160.156.1.rt56.1308.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-trace-devel-0:3.10.0-1160.156.1.rt56.1308.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)

✅ Remediation

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. Workaround: See the security bulletin for a detailed mitigation procedure. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (7)