RHSA-2026:14869HighCVSS 7.8

Red Hat Security Advisory: kernel-rt security update

Published
May 7, 2026
Last Modified
October 30, 2026

🔗 CVE IDs covered (4)

CVE-2018-16885 →CVE-2025-40240 →CVE-2026-23191 →CVE-2026-31402 →

📋 Description

CVE-2018-16885 — kernel: out-of-bound read in memcpy_fromiovecend() CVE-2025-40240 — kernel: sctp: avoid NULL dereference when chunk data buffer is missing CVE-2026-23191 — kernel: ALSA: aloop: Fix racy access at PCM trigger CVE-2026-31402 — kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache

🎯 Affected products13

  • Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-0:3.10.0-1160.149.1.rt56.1301.el7.src as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-0:3.10.0-1160.149.1.rt56.1301.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debug-0:3.10.0-1160.149.1.rt56.1301.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debug-debuginfo-0:3.10.0-1160.149.1.rt56.1301.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debug-devel-0:3.10.0-1160.149.1.rt56.1301.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debuginfo-0:3.10.0-1160.149.1.rt56.1301.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debuginfo-common-x86_64-0:3.10.0-1160.149.1.rt56.1301.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-devel-0:3.10.0-1160.149.1.rt56.1301.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-doc-0:3.10.0-1160.149.1.rt56.1301.el7.noarch as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-trace-0:3.10.0-1160.149.1.rt56.1301.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-trace-debuginfo-0:3.10.0-1160.149.1.rt56.1301.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-trace-devel-0:3.10.0-1160.149.1.rt56.1301.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: To mitigate this issue, prevent module sctp from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically. Workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

🔗 References (7)