RHSA-2026:3268HighCVSS 7.1

Red Hat Security Advisory: kernel security update

Published
February 25, 2026
Last Modified
November 2, 2026

🔗 CVE IDs covered (8)

CVE-2026-23074 →CVE-2023-53821 →CVE-2025-38022 →CVE-2025-38415 →CVE-2025-38459 →CVE-2025-39760 →CVE-2025-39933 →CVE-2025-40271 →

📋 Description

CVE-2023-53821 — kernel: ip6_vti: fix slab-use-after-free in decode_session6 CVE-2025-38022 — kernel: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem CVE-2025-38415 — kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation CVE-2025-38459 — kernel: Linux kernel: Denial of Service in ATM CLIP module via infinite recursion CVE-2025-39760 — kernel: Linux kernel: Denial of Service via out-of-bounds read in USB configuration parsing CVE-2025-39933 — kernel: smb: client: let recv_done verify data_offset, data_length and remaining_data_length CVE-2025-40271 — kernel: Linux kernel: Use-after-free in proc_readdir_de() can lead to privilege escalation or denial of service. CVE-2026-23074 — kernel: Linux kernel: Use-after-free in teql queueing discipline can lead to privilege escalation

🎯 Affected products149

  • Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6)
  • bpftool-0:4.18.0-372.181.1.el8_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • bpftool-0:4.18.0-372.181.1.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • bpftool-0:4.18.0-372.181.1.el8_6.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • bpftool-0:4.18.0-372.181.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • bpftool-0:4.18.0-372.181.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • bpftool-0:4.18.0-372.181.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.6)
  • bpftool-debuginfo-0:4.18.0-372.181.1.el8_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • bpftool-debuginfo-0:4.18.0-372.181.1.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • bpftool-debuginfo-0:4.18.0-372.181.1.el8_6.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • bpftool-debuginfo-0:4.18.0-372.181.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • bpftool-debuginfo-0:4.18.0-372.181.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • bpftool-debuginfo-0:4.18.0-372.181.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.6)
  • kernel-0:4.18.0-372.181.1.el8_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • kernel-0:4.18.0-372.181.1.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • kernel-0:4.18.0-372.181.1.el8_6.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • kernel-0:4.18.0-372.181.1.el8_6.src as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • kernel-0:4.18.0-372.181.1.el8_6.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • kernel-0:4.18.0-372.181.1.el8_6.src as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.6)
  • kernel-0:4.18.0-372.181.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • kernel-0:4.18.0-372.181.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • kernel-0:4.18.0-372.181.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.6)
  • kernel-abi-stablelists-0:4.18.0-372.181.1.el8_6.noarch as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • kernel-abi-stablelists-0:4.18.0-372.181.1.el8_6.noarch as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • kernel-abi-stablelists-0:4.18.0-372.181.1.el8_6.noarch as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.6)
  • kernel-core-0:4.18.0-372.181.1.el8_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • kernel-core-0:4.18.0-372.181.1.el8_6.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • kernel-core-0:4.18.0-372.181.1.el8_6.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • +119 more not shown

✅ 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: 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. 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 (11)