RHSA-2026:6954MediumCVSS 7.8

Red Hat Security Advisory: kernel security update

Published
April 8, 2026
Last Modified
July 30, 2026

🔗 CVE IDs covered (7)

CVE-2025-71238 →CVE-2026-23001 →CVE-2026-23209 →CVE-2025-38180 →CVE-2025-38248 →CVE-2025-40064 →CVE-2025-40168 →

📋 Description

CVE-2025-38180 — kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem CVE-2025-38248 — kernel: Linux kernel:A use-after-free in bridge multicast in br_multicast_port_ctx_init CVE-2025-40064 — kernel: smc: Fix use-after-free in __pnet_find_base_ndev() CVE-2025-40168 — kernel: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match() CVE-2025-71238 — kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. CVE-2026-23001 — kernel: macvlan: fix possible UAF in macvlan_forward_source() CVE-2026-23209 — kernel: macvlan: fix error recovery in macvlan_common_newlink()

🎯 Affected products74

  • Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • bpftool-0:4.18.0-477.135.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • bpftool-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • bpftool-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.135.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • kernel-0:4.18.0-477.135.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-0:4.18.0-477.135.1.el8_8.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-0:4.18.0-477.135.1.el8_8.src as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • kernel-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • kernel-abi-stablelists-0:4.18.0-477.135.1.el8_8.noarch as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-abi-stablelists-0:4.18.0-477.135.1.el8_8.noarch as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • kernel-core-0:4.18.0-477.135.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-core-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-core-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • kernel-debug-0:4.18.0-477.135.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-debug-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-debug-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • kernel-debug-core-0:4.18.0-477.135.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-debug-core-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-debug-core-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • kernel-debug-debuginfo-0:4.18.0-477.135.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-debug-debuginfo-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-debug-debuginfo-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • kernel-debug-devel-0:4.18.0-477.135.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-debug-devel-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • kernel-debug-devel-0:4.18.0-477.135.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • +44 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: To mitigate this issue, prevent module qla2xxx 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: To mitigate this issue, prevent module macvlan from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

🔗 References (10)