Issued:: 2026-06-22
Updated:: 2026-06-22

RHSA-2026:27708 - Important: kernel security, bug fix, and enhancement update

Synopsis

Important: kernel security, bug fix, and enhancement update

Type/Severity

Security Advisory Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

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: smc: Fix use-after-free in __pnet_find_base_ndev() (CVE-2025-40064)
kernel: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match() (CVE-2025-40168)
kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state (CVE-2026-23136)
kernel: netfilter: ctnetlink: ensure safe access to master conntrack (CVE-2026-43116)
kernel: xfs: fix freemap adjustments when adding xattrs to leaf blocks (CVE-2026-43158)
kernel: mm/page_alloc: clear page->private in free_pages_prepare() (CVE-2026-43303)
kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)
kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs (CVE-2026-46323)
kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions (CVE-2026-46243)
kernel: RDMA/iwcm: Fix workqueue list corruption by removing work_list (CVE-2026-45898)
kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)
kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166)

Bug Fix(es) and Enhancement(s):

[RHEL-9] Performance impact of CVE-2025-38085 [rhel-9.6.z] (JIRA:RHEL-161145)
libceph: CEPH_CRYPTO_AES256KRB5 (--key-type aes256k) support [rhel-9.6.z] (JIRA:RHEL-168926)
[ice] 3 of 4 ports "Failed to set LAN Tx queue context, error: -22" [rhel-9.6.z] (JIRA:RHEL-175439)
Kernel panic while shutting down ice driver due to use-after-free [rhel-9.6.z] (JIRA:RHEL-177524)
rbd: eliminate a race in lock_dwork draining on unmap [rhel-9.6.z] (JIRA:RHEL-183129)

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	9.6	x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support	9.6	x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle	9.6	x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support	9.6	ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle	9.6	ppc64le
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support	9.6	s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle	9.6	s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates	9.6	s390x
Red Hat Enterprise Linux for ARM 64 - Extended Update Support	9.6	aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle	9.6	aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates	9.6	aarch64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions	9.6	ppc64le
Red Hat Enterprise Linux Server - AUS	9.6	x86_64
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support	9.6	x86_64
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support	9.6	ppc64le
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support	9.6	s390x
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support	9.6	aarch64

Updated Packages

kernel-64k-debug-modules-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-modules-extra-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-debug-modules-5.14.0-570.123.1.el9_6.x86_64.rpm
perf-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-modules-core-5.14.0-570.123.1.el9_6.aarch64.rpm
rtla-5.14.0-570.123.1.el9_6.ppc64le.rpm
rtla-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-debuginfo-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-doc-5.14.0-570.123.1.el9_6.noarch.rpm
rv-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-rt-modules-extra-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-zfcpdump-debuginfo-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-debug-modules-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-debug-modules-core-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-tools-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
python3-perf-debuginfo-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-devel-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-rt-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-devel-matched-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-debug-modules-core-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-rt-debug-modules-core-5.14.0-570.123.1.el9_6.aarch64.rpm
libperf-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-modules-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-64k-debug-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-zfcpdump-core-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-64k-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-debuginfo-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-debug-devel-5.14.0-570.123.1.el9_6.aarch64.rpm
rv-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-64k-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-modules-extra-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-64k-debug-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-64k-debug-modules-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debuginfo-5.14.0-570.123.1.el9_6.x86_64.rpm
python3-perf-debuginfo-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-64k-debug-modules-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-64k-debug-devel-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-64k-modules-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-devel-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-modules-core-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-rt-debug-modules-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-tools-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-rt-debug-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
libperf-debuginfo-5.14.0-570.123.1.el9_6.ppc64le.rpm
libperf-debuginfo-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-debug-modules-core-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-rt-debug-modules-core-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-tools-libs-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-cross-headers-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-rt-modules-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-headers-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-rt-debug-core-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-abi-stablelists-5.14.0-570.123.1.el9_6.noarch.rpm
kernel-debuginfo-common-s390x-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-debug-modules-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-debug-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-devel-5.14.0-570.123.1.el9_6.ppc64le.rpm
libperf-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-5.14.0-570.123.1.el9_6.src.rpm
kernel-rt-debug-debuginfo-5.14.0-570.123.1.el9_6.x86_64.rpm
perf-debuginfo-5.14.0-570.123.1.el9_6.s390x.rpm
perf-debuginfo-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-zfcpdump-devel-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-rt-debug-modules-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-rt-modules-extra-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-64k-debug-devel-5.14.0-570.123.1.el9_6.aarch64.rpm
perf-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-core-5.14.0-570.123.1.el9_6.s390x.rpm
rv-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-debug-core-5.14.0-570.123.1.el9_6.ppc64le.rpm
python3-perf-5.14.0-570.123.1.el9_6.s390x.rpm
python3-perf-debuginfo-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-64k-modules-extra-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-modules-core-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-headers-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-devel-matched-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-uki-virt-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-tools-libs-devel-5.14.0-570.123.1.el9_6.aarch64.rpm
libperf-5.14.0-570.123.1.el9_6.ppc64le.rpm
libperf-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-debug-devel-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-rt-64k-debug-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-tools-debuginfo-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-tools-debuginfo-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-core-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-debug-modules-extra-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-devel-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-headers-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-uki-virt-addons-5.14.0-570.123.1.el9_6.x86_64.rpm
perf-5.14.0-570.123.1.el9_6.aarch64.rpm
python3-perf-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debuginfo-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-rt-debug-modules-extra-5.14.0-570.123.1.el9_6.x86_64.rpm
rtla-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-rt-64k-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-debuginfo-common-x86_64-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-cross-headers-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-debug-modules-extra-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-tools-libs-devel-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-modules-extra-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-debug-core-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-tools-debuginfo-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-tools-libs-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-64k-debug-modules-extra-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-debug-modules-extra-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-modules-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-modules-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-uki-virt-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-zfcpdump-devel-matched-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-64k-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-zfcpdump-modules-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-64k-devel-matched-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-64k-devel-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-debug-devel-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-tools-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-tools-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-rt-64k-devel-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debuginfo-common-ppc64le-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-modules-core-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-modules-extra-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-debug-modules-extra-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-64k-modules-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-devel-matched-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-headers-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-cross-headers-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-modules-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-64k-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-devel-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-rt-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-debug-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-devel-matched-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-rt-debug-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-64k-modules-extra-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-debuginfo-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-devel-matched-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-rt-kvm-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-zfcpdump-modules-core-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-debug-core-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-zfcpdump-modules-extra-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-debug-modules-extra-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-rt-core-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-debug-modules-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-cross-headers-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-rt-64k-debug-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-modules-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-tools-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-debug-debuginfo-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-zfcpdump-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-devel-matched-5.14.0-570.123.1.el9_6.s390x.rpm
perf-5.14.0-570.123.1.el9_6.ppc64le.rpm
perf-debuginfo-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-debug-devel-5.14.0-570.123.1.el9_6.ppc64le.rpm
libperf-debuginfo-5.14.0-570.123.1.el9_6.x86_64.rpm
python3-perf-5.14.0-570.123.1.el9_6.x86_64.rpm
rtla-5.14.0-570.123.1.el9_6.aarch64.rpm
rv-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-debug-debuginfo-5.14.0-570.123.1.el9_6.s390x.rpm
kernel-rt-64k-debug-modules-extra-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-devel-matched-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-modules-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-64k-debug-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-debug-kvm-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-tools-libs-devel-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-debug-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-tools-libs-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-modules-core-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-debug-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-modules-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-64k-debug-modules-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-64k-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-debug-devel-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-rt-64k-modules-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-rt-devel-5.14.0-570.123.1.el9_6.aarch64.rpm
libperf-debuginfo-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-core-5.14.0-570.123.1.el9_6.ppc64le.rpm
python3-perf-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-64k-debug-devel-matched-5.14.0-570.123.1.el9_6.aarch64.rpm
perf-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-debuginfo-common-aarch64-5.14.0-570.123.1.el9_6.aarch64.rpm
python3-perf-5.14.0-570.123.1.el9_6.ppc64le.rpm
kernel-debug-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-64k-debug-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-devel-5.14.0-570.123.1.el9_6.x86_64.rpm
kernel-64k-modules-core-5.14.0-570.123.1.el9_6.aarch64.rpm
kernel-debug-devel-matched-5.14.0-570.123.1.el9_6.s390x.rpm

Fixes

CVEs

References

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

Additional information

The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at Security Contacts and Procedures.
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