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

RHSA-2026:27731 - 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 10.0 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: Linux kernel: Use-after-free in BPF sockmap can lead to denial of service and privilege escalation (CVE-2025-38154)
kernel: net: use dst_dev_rcu() in sk_setup_caps() (CVE-2025-40170)
kernel: ipv6: use RCU in ip6_xmit() (CVE-2025-40135)
kernel: ipv6: use RCU in ip6_output() (CVE-2025-40158)
kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state (CVE-2026-23136)
kernel: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474)
kernel: netfilter: ctnetlink: ensure safe access to master conntrack (CVE-2026-43116)
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: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows (CVE-2026-43501)
kernel: RDMA/iwcm: Fix workqueue list corruption by removing work_list (CVE-2026-45898)
kernel: sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL (CVE-2026-46227)
kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)

Bug Fix(es) and Enhancement(s):

libceph: CEPH_CRYPTO_AES256KRB5 (--key-type aes256k) support [rhel-10.0.z] (JIRA:RHEL-168933)

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 - Extended Update Support	10.0	x86_64
Red Hat Enterprise Linux for x86_64 - 4 years of updates	10.0	x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support	10.0	ppc64le
Red Hat Enterprise Linux for Power, little endian - 4 years of support	10.0	ppc64le
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support	10.0	s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates	10.0	s390x
Red Hat Enterprise Linux for ARM 64 - Extended Update Support	10.0	aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates	10.0	aarch64
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support	10.0	x86_64
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support	10.0	ppc64le
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support	10.0	s390x
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support	10.0	aarch64

Updated Packages

kernel-debug-modules-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-uki-virt-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debug-devel-6.12.0-55.82.1.el10_0.s390x.rpm
libperf-debuginfo-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-debug-modules-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-devel-matched-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-rt-64k-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-zfcpdump-debuginfo-6.12.0-55.82.1.el10_0.s390x.rpm
python3-perf-debuginfo-6.12.0-55.82.1.el10_0.ppc64le.rpm
python3-perf-debuginfo-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-debug-core-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debug-core-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-rt-debug-modules-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-64k-debug-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-modules-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debuginfo-common-ppc64le-6.12.0-55.82.1.el10_0.ppc64le.rpm
libperf-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-rt-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debug-uki-virt-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-rt-debug-core-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-doc-6.12.0-55.82.1.el10_0.noarch.rpm
python3-perf-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-debuginfo-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-debug-devel-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-uki-virt-addons-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-abi-stablelists-6.12.0-55.82.1.el10_0.noarch.rpm
kernel-64k-debug-modules-extra-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-modules-core-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-cross-headers-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-modules-extra-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debuginfo-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-rt-modules-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-zfcpdump-modules-core-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-headers-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-cross-headers-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-64k-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-64k-debug-devel-matched-6.12.0-55.82.1.el10_0.aarch64.rpm
python3-perf-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-devel-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-64k-debug-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-64k-devel-matched-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-cross-headers-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-modules-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-modules-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-rt-kvm-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debug-devel-matched-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-tools-debuginfo-6.12.0-55.82.1.el10_0.ppc64le.rpm
python3-perf-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
rtla-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-rt-debug-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-cross-headers-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-tools-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-zfcpdump-devel-matched-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-rt-debug-modules-extra-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debuginfo-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-rt-debug-devel-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-tools-libs-devel-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-64k-devel-6.12.0-55.82.1.el10_0.aarch64.rpm
rtla-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-64k-debug-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-debuginfo-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-modules-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-modules-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-modules-core-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-6.12.0-55.82.1.el10_0.src.rpm
kernel-rt-64k-modules-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-modules-core-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-devel-6.12.0-55.82.1.el10_0.ppc64le.rpm
python3-perf-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-64k-modules-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-64k-devel-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-tools-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-rt-64k-debug-devel-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-debug-kvm-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-tools-libs-devel-6.12.0-55.82.1.el10_0.ppc64le.rpm
rtla-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-debug-debuginfo-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debug-modules-extra-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-core-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-devel-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-rt-64k-debug-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-core-6.12.0-55.82.1.el10_0.s390x.rpm
libperf-6.12.0-55.82.1.el10_0.aarch64.rpm
perf-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-devel-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-64k-debug-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-tools-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-modules-core-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debug-modules-extra-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-tools-debuginfo-6.12.0-55.82.1.el10_0.s390x.rpm
libperf-debuginfo-6.12.0-55.82.1.el10_0.ppc64le.rpm
perf-debuginfo-6.12.0-55.82.1.el10_0.s390x.rpm
libperf-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-rt-debug-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-zfcpdump-devel-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-debug-modules-extra-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-64k-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-64k-debug-devel-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-modules-core-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-debug-devel-matched-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-modules-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-modules-extra-6.12.0-55.82.1.el10_0.ppc64le.rpm
rv-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-devel-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-modules-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-rt-64k-debug-modules-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-uki-virt-addons-6.12.0-55.82.1.el10_0.x86_64.rpm
libperf-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-debug-debuginfo-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-rt-modules-extra-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-headers-6.12.0-55.82.1.el10_0.s390x.rpm
perf-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-tools-debuginfo-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-tools-libs-devel-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-devel-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-modules-extra-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-64k-debug-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-64k-debug-modules-extra-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-modules-extra-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-debug-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-tools-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-rt-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-6.12.0-55.82.1.el10_0.s390x.rpm
perf-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-rt-64k-modules-extra-6.12.0-55.82.1.el10_0.aarch64.rpm
perf-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-devel-matched-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-modules-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-devel-matched-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-rt-debug-modules-extra-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-64k-modules-extra-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-headers-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-rt-debug-devel-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-rt-debug-modules-core-6.12.0-55.82.1.el10_0.x86_64.rpm
perf-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-modules-core-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-64k-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-64k-debug-modules-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-core-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-zfcpdump-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-64k-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-zfcpdump-modules-extra-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-zfcpdump-core-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-debug-devel-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-uki-virt-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-64k-debug-modules-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-zfcpdump-modules-6.12.0-55.82.1.el10_0.s390x.rpm
python3-perf-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debug-devel-matched-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debug-modules-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-debuginfo-common-s390x-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-rt-debug-modules-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debuginfo-common-x86_64-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-headers-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-64k-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-devel-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-tools-libs-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-rt-64k-modules-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-modules-core-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-tools-libs-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-64k-modules-core-6.12.0-55.82.1.el10_0.aarch64.rpm
perf-debuginfo-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-rt-core-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-rt-debug-6.12.0-55.82.1.el10_0.aarch64.rpm
python3-perf-debuginfo-6.12.0-55.82.1.el10_0.x86_64.rpm
rtla-6.12.0-55.82.1.el10_0.ppc64le.rpm
rv-6.12.0-55.82.1.el10_0.s390x.rpm
libperf-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-core-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-tools-libs-6.12.0-55.82.1.el10_0.ppc64le.rpm
rv-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debug-debuginfo-6.12.0-55.82.1.el10_0.x86_64.rpm
perf-debuginfo-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-debug-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-devel-matched-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-modules-extra-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-tools-debuginfo-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-debug-debuginfo-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-debug-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-debuginfo-common-aarch64-6.12.0-55.82.1.el10_0.aarch64.rpm
rv-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-rt-debug-modules-6.12.0-55.82.1.el10_0.x86_64.rpm
libperf-debuginfo-6.12.0-55.82.1.el10_0.x86_64.rpm
kernel-modules-extra-6.12.0-55.82.1.el10_0.s390x.rpm
kernel-debug-modules-core-6.12.0-55.82.1.el10_0.aarch64.rpm
kernel-debug-devel-matched-6.12.0-55.82.1.el10_0.ppc64le.rpm
kernel-rt-64k-debug-modules-core-6.12.0-55.82.1.el10_0.aarch64.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.
Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.