Issued:: 2026-02-17
Updated:: 2026-02-17

RHSA-2026:2766 - 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 9.4 Extended Update Support.

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: Linux kernel: xHCI driver isochronous event handling race condition leading to data loss or UAF (CVE-2025-37882)
kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation (CVE-2025-38415)
kernel: Linux kernel: Data corruption and system instability due to improper io_uring/net buffer handling (CVE-2025-38730)
kernel: Linux kernel: Denial of Service via out-of-bounds read in USB configuration parsing (CVE-2025-39760)
kernel: smb: client: let recv_done verify data_offset, data_length and remaining_data_length (CVE-2025-39933)
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: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. (CVE-2025-40304)
kernel: Linux kernel ALSA USB audio driver: Buffer overflow leading to information disclosure and denial of service (CVE-2025-40269)
kernel: NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid (CVE-2025-68349)

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 - Update Services for SAP Solutions	9.4	x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support	9.4	x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support	9.4	ppc64le
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support	9.4	s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates	9.4	s390x
Red Hat Enterprise Linux for ARM 64 - Extended Update Support	9.4	aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates	9.4	aarch64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions	9.4	ppc64le
Red Hat Enterprise Linux Server - AUS	9.4	x86_64
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support	9.4	x86_64
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support	9.4	ppc64le
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support	9.4	s390x
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support	9.4	aarch64

Updated Packages

kernel-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-rt-debug-core-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-tools-libs-devel-5.14.0-427.111.1.el9_4.ppc64le.rpm
bpftool-7.3.0-427.111.1.el9_4.ppc64le.rpm
kernel-zfcpdump-devel-matched-5.14.0-427.111.1.el9_4.s390x.rpm
libperf-debuginfo-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-debug-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-rt-debug-modules-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-modules-extra-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-core-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-64k-debug-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-64k-debuginfo-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-debug-modules-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-64k-debug-modules-core-5.14.0-427.111.1.el9_4.aarch64.rpm
perf-5.14.0-427.111.1.el9_4.s390x.rpm
libperf-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-debug-debuginfo-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-rt-debug-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-tools-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-cross-headers-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-headers-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-modules-extra-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-debug-uki-virt-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debug-modules-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-debug-modules-core-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-devel-matched-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-modules-core-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-debug-modules-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-modules-core-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-devel-matched-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-debug-modules-extra-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-rt-modules-extra-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-tools-libs-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-uki-virt-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-zfcpdump-devel-5.14.0-427.111.1.el9_4.s390x.rpm
perf-debuginfo-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-debug-core-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-cross-headers-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-64k-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-debuginfo-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-headers-5.14.0-427.111.1.el9_4.s390x.rpm
python3-perf-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-64k-debug-devel-5.14.0-427.111.1.el9_4.aarch64.rpm
python3-perf-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debuginfo-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-64k-debug-debuginfo-5.14.0-427.111.1.el9_4.aarch64.rpm
rtla-5.14.0-427.111.1.el9_4.ppc64le.rpm
python3-perf-debuginfo-5.14.0-427.111.1.el9_4.aarch64.rpm
rtla-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-rt-debuginfo-5.14.0-427.111.1.el9_4.x86_64.rpm
rv-5.14.0-427.111.1.el9_4.aarch64.rpm
perf-debuginfo-5.14.0-427.111.1.el9_4.x86_64.rpm
rv-5.14.0-427.111.1.el9_4.ppc64le.rpm
perf-5.14.0-427.111.1.el9_4.x86_64.rpm
rv-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-modules-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-rt-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debug-devel-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-debug-debuginfo-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-debug-modules-extra-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-abi-stablelists-5.14.0-427.111.1.el9_4.noarch.rpm
kernel-tools-debuginfo-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-devel-5.14.0-427.111.1.el9_4.x86_64.rpm
python3-perf-debuginfo-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-64k-debug-core-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-rt-debug-modules-core-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-zfcpdump-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-zfcpdump-core-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-tools-libs-devel-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debug-core-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-devel-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-zfcpdump-modules-extra-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-64k-debug-modules-extra-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-rt-debug-debuginfo-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-tools-debuginfo-5.14.0-427.111.1.el9_4.x86_64.rpm
bpftool-7.3.0-427.111.1.el9_4.x86_64.rpm
kernel-tools-libs-5.14.0-427.111.1.el9_4.ppc64le.rpm
python3-perf-debuginfo-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debug-modules-core-5.14.0-427.111.1.el9_4.x86_64.rpm
libperf-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-tools-libs-devel-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-modules-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-rt-modules-core-5.14.0-427.111.1.el9_4.x86_64.rpm
perf-5.14.0-427.111.1.el9_4.ppc64le.rpm
bpftool-debuginfo-7.3.0-427.111.1.el9_4.ppc64le.rpm
kernel-64k-devel-matched-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-zfcpdump-modules-core-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-64k-modules-5.14.0-427.111.1.el9_4.aarch64.rpm
perf-debuginfo-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-cross-headers-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-tools-5.14.0-427.111.1.el9_4.ppc64le.rpm
python3-perf-debuginfo-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-debug-devel-matched-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-64k-core-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-rt-debug-debuginfo-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-headers-5.14.0-427.111.1.el9_4.ppc64le.rpm
perf-debuginfo-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-devel-5.14.0-427.111.1.el9_4.aarch64.rpm
bpftool-7.3.0-427.111.1.el9_4.aarch64.rpm
kernel-zfcpdump-modules-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-64k-modules-extra-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-zfcpdump-debuginfo-5.14.0-427.111.1.el9_4.s390x.rpm
bpftool-debuginfo-7.3.0-427.111.1.el9_4.aarch64.rpm
kernel-debuginfo-common-aarch64-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-headers-5.14.0-427.111.1.el9_4.x86_64.rpm
libperf-5.14.0-427.111.1.el9_4.ppc64le.rpm
libperf-debuginfo-5.14.0-427.111.1.el9_4.ppc64le.rpm
libperf-debuginfo-5.14.0-427.111.1.el9_4.x86_64.rpm
python3-perf-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-debug-debuginfo-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-debug-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-doc-5.14.0-427.111.1.el9_4.noarch.rpm
kernel-debug-modules-extra-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-devel-matched-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-debug-modules-core-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-debug-debuginfo-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-modules-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-cross-headers-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-devel-matched-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-modules-core-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debug-devel-matched-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-debug-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-modules-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-rt-devel-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-rt-kvm-5.14.0-427.111.1.el9_4.x86_64.rpm
python3-perf-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-debug-core-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-debug-modules-core-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-tools-debuginfo-5.14.0-427.111.1.el9_4.s390x.rpm
rv-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debug-devel-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-tools-debuginfo-5.14.0-427.111.1.el9_4.ppc64le.rpm
bpftool-debuginfo-7.3.0-427.111.1.el9_4.x86_64.rpm
perf-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-core-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-rt-debug-kvm-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-core-5.14.0-427.111.1.el9_4.aarch64.rpm
bpftool-debuginfo-7.3.0-427.111.1.el9_4.s390x.rpm
bpftool-7.3.0-427.111.1.el9_4.s390x.rpm
rtla-5.14.0-427.111.1.el9_4.aarch64.rpm
libperf-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-devel-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-debuginfo-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-tools-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-debug-devel-matched-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-64k-debug-modules-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-debuginfo-common-x86_64-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debuginfo-common-ppc64le-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-modules-extra-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-5.14.0-427.111.1.el9_4.src.rpm
kernel-debug-devel-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-modules-core-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-tools-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debug-modules-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-rt-core-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debuginfo-5.14.0-427.111.1.el9_4.s390x.rpm
libperf-debuginfo-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-tools-libs-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debuginfo-common-s390x-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-debug-devel-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-rt-debuginfo-5.14.0-427.111.1.el9_4.aarch64.rpm
rtla-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-core-5.14.0-427.111.1.el9_4.s390x.rpm
kernel-64k-debug-devel-matched-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-debug-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-rt-debug-devel-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debug-core-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-rt-modules-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-debug-devel-matched-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-64k-modules-core-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-64k-devel-5.14.0-427.111.1.el9_4.aarch64.rpm
kernel-debug-modules-extra-5.14.0-427.111.1.el9_4.x86_64.rpm
kernel-modules-extra-5.14.0-427.111.1.el9_4.ppc64le.rpm
kernel-rt-debug-modules-extra-5.14.0-427.111.1.el9_4.x86_64.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.