Issued:

2026-06-19

Updated:

2026-06-19

RHSA-2026:27288 - 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.

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: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474)

• kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)

• kernel: rxrpc: Fix RxGK token loading to check bounds (CVE-2026-31641)

• kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)

• kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)

• kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056)

• kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772)

• kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260)

• kernel: crypto: caam - fix overflow on long hmac keys (CVE-2026-43330)

• kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)

• kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)

• kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)

• kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)

• kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173)

• kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166)

Bug Fix(es) and Enhancement(s):

• RHEL10.0 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [rhel-10.2.z] (JIRA:RHEL-166047)

• RHEL9.5 crash due to lpfc NULL ndlp->vport [rhel-10.2.z] (JIRA:RHEL-171774)

• objtool static_call check blocks build of out-of-tree livepatch modules on RHEL 10.2 GA kernels ? missing upstream revert f495054bd12e (JIRA:RHEL-178495)

• ibmveth Adapter Freeze with Small MSS [rhel-10.2.z] (JIRA:RHEL-179723)

• rbd: eliminate a race in lock_dwork draining on unmap [rhel-10.2.z] (JIRA:RHEL-183127)

• RHEL10.0 - s390/mm: Add missing secure storage access fixups [rhel-10.2.z] (JIRA:RHEL-183319)

• [RHEL10.2.z] Enable Pretimeout Watchdog Panic Functionality on x86 (JIRA:RHEL-182299)

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

Updated Packages

• kernel-6.12.0-211.26.1.el10_2.src.rpm
• kernel-modules-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-debuginfo-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-modules-extra-matched-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-rt-modules-6.12.0-211.26.1.el10_2.aarch64.rpm
• python3-perf-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-64k-modules-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-64k-debug-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-64k-debug-devel-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-64k-debug-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-devel-matched-6.12.0-211.26.1.el10_2.aarch64.rpm
• libperf-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-headers-6.12.0-211.26.1.el10_2.aarch64.rpm
• libperf-6.12.0-211.26.1.el10_2.x86_64.rpm
• libperf-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• libperf-debuginfo-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-rt-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-rt-debug-modules-extra-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-zfcpdump-debuginfo-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-debug-devel-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-core-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-rt-64k-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-zfcpdump-modules-core-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-debug-debuginfo-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-rt-debug-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-64k-devel-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-modules-extra-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-tools-libs-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-zfcpdump-modules-extra-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-debug-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-debug-modules-extra-6.12.0-211.26.1.el10_2.x86_64.rpm
• perf-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-64k-debug-modules-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-64k-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-debug-modules-extra-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-modules-extra-6.12.0-211.26.1.el10_2.ppc64le.rpm
• perf-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-core-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-debuginfo-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-debug-devel-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-devel-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-headers-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-core-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-rt-64k-debug-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-debug-modules-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-modules-core-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-debuginfo-common-s390x-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-tools-libs-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-uki-virt-addons-6.12.0-211.26.1.el10_2.aarch64.rpm
• rtla-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-cross-headers-6.12.0-211.26.1.el10_2.ppc64le.rpm
• python3-perf-debuginfo-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-modules-extra-matched-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-cross-headers-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-debug-devel-matched-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-debug-modules-extra-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-devel-matched-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-modules-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-rt-64k-modules-extra-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-64k-debug-devel-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-debug-core-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-zfcpdump-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-rt-debug-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-devel-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-tools-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-tools-debuginfo-6.12.0-211.26.1.el10_2.s390x.rpm
• perf-debuginfo-6.12.0-211.26.1.el10_2.x86_64.rpm
• python3-perf-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-tools-libs-devel-6.12.0-211.26.1.el10_2.ppc64le.rpm
• libperf-debuginfo-6.12.0-211.26.1.el10_2.ppc64le.rpm
• python3-perf-debuginfo-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-modules-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-devel-matched-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-rt-64k-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-modules-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-debug-modules-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-debug-modules-core-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-64k-modules-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debuginfo-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-doc-6.12.0-211.26.1.el10_2.noarch.rpm
• kernel-modules-core-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-64k-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debuginfo-common-x86_64-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-core-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-64k-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-64k-debug-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-64k-debug-devel-matched-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-modules-core-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-64k-debug-modules-extra-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debuginfo-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-debug-devel-matched-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-cross-headers-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-rt-debug-debuginfo-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-rt-64k-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-devel-matched-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-headers-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-rt-core-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-debug-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-cross-headers-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-debug-modules-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-debug-modules-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-headers-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-rt-devel-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-tools-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-devel-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-debug-modules-extra-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-zfcpdump-core-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-zfcpdump-modules-6.12.0-211.26.1.el10_2.s390x.rpm
• perf-debuginfo-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-rt-debug-devel-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-uki-virt-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-64k-debug-modules-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-devel-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-rt-debuginfo-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-64k-devel-matched-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-core-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-debuginfo-common-aarch64-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-modules-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debuginfo-common-ppc64le-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-modules-core-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-rt-64k-debug-modules-extra-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-64k-modules-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-debug-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-tools-debuginfo-6.12.0-211.26.1.el10_2.x86_64.rpm
• libperf-debuginfo-6.12.0-211.26.1.el10_2.x86_64.rpm
• perf-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-modules-extra-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-64k-devel-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-tools-6.12.0-211.26.1.el10_2.x86_64.rpm
• perf-debuginfo-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-rt-debuginfo-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-devel-matched-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-tools-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-uki-virt-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-modules-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-debug-modules-extra-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-modules-extra-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-zfcpdump-devel-matched-6.12.0-211.26.1.el10_2.s390x.rpm
• python3-perf-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-64k-modules-extra-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-debug-modules-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-devel-6.12.0-211.26.1.el10_2.x86_64.rpm
• python3-perf-debuginfo-6.12.0-211.26.1.el10_2.x86_64.rpm
• rtla-6.12.0-211.26.1.el10_2.aarch64.rpm
• rv-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-debug-modules-core-6.12.0-211.26.1.el10_2.x86_64.rpm
• rv-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-64k-debug-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• rv-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-debug-6.12.0-211.26.1.el10_2.s390x.rpm
• libperf-6.12.0-211.26.1.el10_2.aarch64.rpm
• python3-perf-6.12.0-211.26.1.el10_2.x86_64.rpm
• rv-6.12.0-211.26.1.el10_2.ppc64le.rpm
• rtla-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-debug-modules-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-devel-6.12.0-211.26.1.el10_2.s390x.rpm
• rtla-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-uki-virt-addons-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-debug-modules-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-modules-core-6.12.0-211.26.1.el10_2.s390x.rpm
• perf-6.12.0-211.26.1.el10_2.aarch64.rpm
• perf-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-zfcpdump-devel-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-devel-matched-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-modules-extra-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-tools-libs-6.12.0-211.26.1.el10_2.aarch64.rpm
• python3-perf-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-abi-stablelists-6.12.0-211.26.1.el10_2.noarch.rpm
• kernel-rt-modules-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-modules-extra-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-64k-debug-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-debuginfo-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-64k-modules-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-rt-debug-devel-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-modules-extra-matched-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-core-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-tools-debuginfo-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-tools-libs-devel-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-debug-modules-core-6.12.0-211.26.1.el10_2.x86_64.rpm
• libperf-6.12.0-211.26.1.el10_2.s390x.rpm
• kernel-debug-uki-virt-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-rt-64k-debug-modules-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-rt-64k-debug-modules-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-devel-6.12.0-211.26.1.el10_2.ppc64le.rpm
• kernel-rt-core-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-modules-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-rt-debug-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-tools-6.12.0-211.26.1.el10_2.aarch64.rpm
• kernel-tools-libs-devel-6.12.0-211.26.1.el10_2.x86_64.rpm
• kernel-modules-extra-matched-6.12.0-211.26.1.el10_2.s390x.rpm

Fixes

• This content is not included.BZ - 2460646
• This content is not included.BZ - 2461503
• This content is not included.BZ - 2461548
• This content is not included.BZ - 2464092
• This content is not included.BZ - 2464096
• This content is not included.BZ - 2464449
• This content is not included.BZ - 2464502
• This content is not included.BZ - 2467083
• This content is not included.BZ - 2468061
• This content is not included.BZ - 2479492
• This content is not included.BZ - 2482181
• This content is not included.BZ - 2482563
• This content is not included.BZ - 2482608
• This content is not included.BZ - 2482634
• This content is not included.BZ - 2482645

CVEs

• CVE-2026-31474
• CVE-2026-31641
• CVE-2026-31669
• CVE-2026-31772
• CVE-2026-31786
• CVE-2026-31787
• CVE-2026-43056
• CVE-2026-43260
• CVE-2026-43330
• CVE-2026-46056
• CVE-2026-46125
• CVE-2026-46152
• CVE-2026-46166
• CVE-2026-46173
• CVE-2026-46331

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.