- Issued:
- 2026-02-23
- Updated:
- 2026-02-23
RHSA-2026:3083 - Important: kernel security update
Synopsis
Important: kernel security update
Type/Severity
Security Advisory Important
Topic
An update for kernel is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
-
kernel: page_pool: Fix use-after-free in page_pool_recycle_in_ring (CVE-2025-38129)
-
kernel: Linux kernel:A use-after-free in bridge multicast in br_multicast_port_ctx_init (CVE-2025-38248)
-
kernel: smc: Fix use-after-free in __pnet_find_base_ndev() (CVE-2025-40064)
-
kernel: mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats (CVE-2025-68800)
-
kernel: Linux kernel: Use-after-free in teql queueing discipline can lead to privilege escalation (CVE-2026-23074)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Solution
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.
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for x86_64 | 8 | x86_64 |
| Red Hat Enterprise Linux for Power, little endian | 8 | ppc64le |
| Red Hat Enterprise Linux for IBM z Systems | 8 | s390x |
| Red Hat Enterprise Linux for ARM 64 | 8 | aarch64 |
| Red Hat CodeReady Linux Builder for x86_64 | 8 | x86_64 |
| Red Hat CodeReady Linux Builder for Power, little endian | 8 | ppc64le |
| Red Hat CodeReady Linux Builder for ARM 64 | 8 | aarch64 |
Updated Packages
- bpftool-debuginfo-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-debug-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debug-devel-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debug-modules-extra-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debuginfo-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-tools-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-modules-4.18.0-553.107.1.el8_10.x86_64.rpm
- bpftool-debuginfo-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-modules-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-tools-libs-devel-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-zfcpdump-modules-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-debug-devel-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-modules-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-tools-debuginfo-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-devel-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-debuginfo-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-debuginfo-common-s390x-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debug-core-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-debug-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-debug-modules-extra-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-debug-core-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debug-devel-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-headers-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-modules-extra-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-tools-libs-devel-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-cross-headers-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-zfcpdump-core-4.18.0-553.107.1.el8_10.s390x.rpm
- perf-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debug-debuginfo-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-debug-modules-extra-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-abi-stablelists-4.18.0-553.107.1.el8_10.noarch.rpm
- bpftool-debuginfo-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debug-modules-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-headers-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-modules-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-modules-extra-4.18.0-553.107.1.el8_10.s390x.rpm
- perf-4.18.0-553.107.1.el8_10.ppc64le.rpm
- perf-debuginfo-4.18.0-553.107.1.el8_10.aarch64.rpm
- perf-debuginfo-4.18.0-553.107.1.el8_10.ppc64le.rpm
- perf-debuginfo-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-tools-4.18.0-553.107.1.el8_10.aarch64.rpm
- python3-perf-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-debug-modules-extra-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-debug-debuginfo-4.18.0-553.107.1.el8_10.aarch64.rpm
- python3-perf-debuginfo-4.18.0-553.107.1.el8_10.ppc64le.rpm
- python3-perf-debuginfo-4.18.0-553.107.1.el8_10.s390x.rpm
- python3-perf-debuginfo-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-zfcpdump-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debug-core-4.18.0-553.107.1.el8_10.x86_64.rpm
- python3-perf-4.18.0-553.107.1.el8_10.aarch64.rpm
- python3-perf-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debuginfo-common-x86_64-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-4.18.0-553.107.1.el8_10.s390x.rpm
- bpftool-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-modules-extra-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-tools-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-4.18.0-553.107.1.el8_10.src.rpm
- kernel-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-devel-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debug-modules-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-doc-4.18.0-553.107.1.el8_10.noarch.rpm
- kernel-tools-debuginfo-4.18.0-553.107.1.el8_10.x86_64.rpm
- perf-4.18.0-553.107.1.el8_10.aarch64.rpm
- perf-debuginfo-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-cross-headers-4.18.0-553.107.1.el8_10.s390x.rpm
- bpftool-4.18.0-553.107.1.el8_10.aarch64.rpm
- bpftool-4.18.0-553.107.1.el8_10.ppc64le.rpm
- perf-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-headers-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-debug-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-debuginfo-common-aarch64-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-debuginfo-common-ppc64le-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-tools-libs-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-core-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-debug-debuginfo-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-debuginfo-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-debug-modules-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-tools-libs-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-tools-libs-4.18.0-553.107.1.el8_10.ppc64le.rpm
- python3-perf-debuginfo-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-debug-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-devel-4.18.0-553.107.1.el8_10.aarch64.rpm
- bpftool-debuginfo-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-modules-extra-4.18.0-553.107.1.el8_10.x86_64.rpm
- python3-perf-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-cross-headers-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-debug-core-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-core-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-cross-headers-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-debug-devel-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-debug-debuginfo-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-tools-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debug-modules-4.18.0-553.107.1.el8_10.ppc64le.rpm
- bpftool-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-devel-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-headers-4.18.0-553.107.1.el8_10.ppc64le.rpm
- kernel-tools-debuginfo-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-core-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-tools-libs-devel-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-zfcpdump-debuginfo-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-core-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-tools-debuginfo-4.18.0-553.107.1.el8_10.aarch64.rpm
- kernel-zfcpdump-devel-4.18.0-553.107.1.el8_10.s390x.rpm
- kernel-debuginfo-4.18.0-553.107.1.el8_10.x86_64.rpm
- kernel-zfcpdump-modules-extra-4.18.0-553.107.1.el8_10.s390x.rpm
Fixes
- This content is not included.BZ - 2376034
- This content is not included.BZ - 2378981
- This content is not included.BZ - 2406747
- This content is not included.BZ - 2429065
- This content is not included.BZ - 2436791
CVEs
References
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.