Red Hat Security Advisory: kernel security update
🔗 CVE IDs covered (5)
📋 Description
CVE-2025-38154 — kernel: Linux kernel: Use-after-free in BPF sockmap can lead to denial of service and privilege escalation CVE-2025-38180 — kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem CVE-2025-38206 — kernel: Kernel: Double free vulnerability in exFAT filesystem can lead to denial of service CVE-2025-38248 — kernel: Linux kernel:A use-after-free in bridge multicast in br_multicast_port_ctx_init CVE-2026-23209 — kernel: macvlan: fix error recovery in macvlan_common_newlink()
🎯 Affected products136
- Red Hat Enterprise Linux AppStream E4S (v.9.0)
- Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- bpftool-0:5.14.0-70.173.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- bpftool-0:5.14.0-70.173.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- bpftool-0:5.14.0-70.173.1.el9_0.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- bpftool-0:5.14.0-70.173.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- bpftool-debuginfo-0:5.14.0-70.173.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.0)
- bpftool-debuginfo-0:5.14.0-70.173.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- bpftool-debuginfo-0:5.14.0-70.173.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.0)
- bpftool-debuginfo-0:5.14.0-70.173.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- bpftool-debuginfo-0:5.14.0-70.173.1.el9_0.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.0)
- bpftool-debuginfo-0:5.14.0-70.173.1.el9_0.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- bpftool-debuginfo-0:5.14.0-70.173.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.0)
- bpftool-debuginfo-0:5.14.0-70.173.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-0:5.14.0-70.173.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-0:5.14.0-70.173.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-0:5.14.0-70.173.1.el9_0.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-0:5.14.0-70.173.1.el9_0.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-0:5.14.0-70.173.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-abi-stablelists-0:5.14.0-70.173.1.el9_0.noarch as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-core-0:5.14.0-70.173.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-core-0:5.14.0-70.173.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-core-0:5.14.0-70.173.1.el9_0.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-core-0:5.14.0-70.173.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-debug-0:5.14.0-70.173.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-debug-0:5.14.0-70.173.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-debug-0:5.14.0-70.173.1.el9_0.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-debug-0:5.14.0-70.173.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-debug-core-0:5.14.0-70.173.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- kernel-debug-core-0:5.14.0-70.173.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
- +106 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: 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 (8)
- selfhttps://access.redhat.com/errata/RHSA-2026:7013
- externalhttps://access.redhat.com/security/updates/classification/#moderate
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2376056
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2376376
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2376377
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2378981
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2439900
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7013.json