Issued:: 2026-02-02
Updated:: 2026-02-02

RHSA-2026:1662 - Moderate: kernel security update

Synopsis

Moderate: kernel security update

Type/Severity

Security Advisory Moderate

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 Moderate. 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: IB/hfi1: Fix sdma.h tx->num_descs off-by-one error (CVE-2024-26766)
kernel: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem (CVE-2025-38022)
kernel: Linux kernel: RDMA/rxe use-after-free vulnerability leading to potential arbitrary code execution (CVE-2025-38024)
kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation (CVE-2025-38415)
kernel: Linux kernel: Denial of Service in ATM CLIP module via infinite recursion (CVE-2025-38459)
kernel: Linux kernel: Denial of Service via out-of-bounds read in USB configuration parsing (CVE-2025-39760)
kernel: mptcp: fix race condition in mptcp_schedule_work() (CVE-2025-40258)
kernel: Linux kernel: Use-after-free in proc_readdir_de() can lead to privilege escalation or denial of service. (CVE-2025-40271)
kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling (CVE-2025-40322)
kernel: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() (CVE-2022-50865)

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

kernel-modules-extra-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-zfcpdump-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-debuginfo-common-x86_64-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-tools-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-devel-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-zfcpdump-core-4.18.0-553.100.1.el8_10.s390x.rpm
perf-debuginfo-4.18.0-553.100.1.el8_10.aarch64.rpm
perf-debuginfo-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-debug-modules-extra-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-debug-devel-4.18.0-553.100.1.el8_10.ppc64le.rpm
python3-perf-debuginfo-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-debug-modules-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-debuginfo-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-tools-libs-4.18.0-553.100.1.el8_10.aarch64.rpm
python3-perf-debuginfo-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-modules-extra-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-debug-devel-4.18.0-553.100.1.el8_10.aarch64.rpm
bpftool-debuginfo-4.18.0-553.100.1.el8_10.x86_64.rpm
bpftool-debuginfo-4.18.0-553.100.1.el8_10.ppc64le.rpm
perf-debuginfo-4.18.0-553.100.1.el8_10.ppc64le.rpm
perf-4.18.0-553.100.1.el8_10.x86_64.rpm
bpftool-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-core-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-debug-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-zfcpdump-modules-4.18.0-553.100.1.el8_10.s390x.rpm
bpftool-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-debug-core-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-core-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-tools-debuginfo-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-debug-modules-extra-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-debuginfo-common-aarch64-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-zfcpdump-modules-extra-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-devel-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-tools-libs-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-debug-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-tools-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-debug-devel-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-debug-debuginfo-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-debuginfo-common-s390x-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-4.18.0-553.100.1.el8_10.src.rpm
kernel-modules-extra-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-debug-modules-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-zfcpdump-devel-4.18.0-553.100.1.el8_10.s390x.rpm
perf-4.18.0-553.100.1.el8_10.ppc64le.rpm
python3-perf-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-debug-core-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-core-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-cross-headers-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-cross-headers-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-abi-stablelists-4.18.0-553.100.1.el8_10.noarch.rpm
kernel-debug-debuginfo-4.18.0-553.100.1.el8_10.s390x.rpm
bpftool-debuginfo-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-modules-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-devel-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-modules-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-tools-libs-devel-4.18.0-553.100.1.el8_10.aarch64.rpm
perf-debuginfo-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-headers-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-debug-debuginfo-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-debuginfo-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-modules-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-tools-libs-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-debug-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-tools-debuginfo-4.18.0-553.100.1.el8_10.x86_64.rpm
perf-4.18.0-553.100.1.el8_10.s390x.rpm
bpftool-debuginfo-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-debug-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-debug-devel-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-debug-modules-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-modules-extra-4.18.0-553.100.1.el8_10.x86_64.rpm
bpftool-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-tools-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-4.18.0-553.100.1.el8_10.ppc64le.rpm
python3-perf-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-zfcpdump-debuginfo-4.18.0-553.100.1.el8_10.s390x.rpm
python3-perf-debuginfo-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-tools-debuginfo-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-tools-libs-devel-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-tools-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-debug-modules-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-tools-debuginfo-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-debuginfo-4.18.0-553.100.1.el8_10.s390x.rpm
bpftool-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-debug-debuginfo-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-headers-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-debuginfo-4.18.0-553.100.1.el8_10.aarch64.rpm
python3-perf-4.18.0-553.100.1.el8_10.ppc64le.rpm
python3-perf-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-doc-4.18.0-553.100.1.el8_10.noarch.rpm
kernel-debug-core-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-devel-4.18.0-553.100.1.el8_10.s390x.rpm
kernel-headers-4.18.0-553.100.1.el8_10.x86_64.rpm
perf-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-cross-headers-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-debug-modules-extra-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-modules-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-headers-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-cross-headers-4.18.0-553.100.1.el8_10.x86_64.rpm
kernel-debug-core-4.18.0-553.100.1.el8_10.aarch64.rpm
kernel-tools-libs-devel-4.18.0-553.100.1.el8_10.ppc64le.rpm
kernel-core-4.18.0-553.100.1.el8_10.x86_64.rpm
python3-perf-debuginfo-4.18.0-553.100.1.el8_10.ppc64le.rpm

Fixes

CVEs

References

https://access.redhat.com/security/updates/classification/#moderate

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.