Issued:

2026-07-21

Updated:

2026-07-21

RHSA-2026:42919 - 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: crypto: af_alg - zero initialize memory allocated via sock_kmalloc (CVE-2025-71113)

• kernel: Linux kernel: Denial of Service due to memory leak in tpm2_load_cmd (CVE-2025-71147)

• kernel: flex_proportions: make fprop_new_period() hardirq safe (CVE-2026-23168)

• kernel: cxl/port: Fix use after free of parent_port in cxl_detach_ep() (CVE-2026-31530)

• kernel: xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete (CVE-2026-46116)

• kernel: fanotify: fix false positive on permission events (CVE-2026-46150)

• kernel: drm: Set old handle to NULL before prime swap in change_handle (CVE-2026-46215)

• kernel: drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl() (CVE-2026-52976)

• kernel: drm/xe/dma-buf: fix UAF with retry loop (CVE-2026-52950)

• kernel: ice: fix double-free of tx_buf skb (CVE-2026-53009)

• kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp (CVE-2026-53071)

• kernel: can: bcm: thrtimer use-after-free during RX operation teardown ()

Bug Fix(es) and Enhancement(s):

• nfsd_file slab cache objects remaining on kmem_cache_shutdown during nfsd teardown while running bz1477872 testcase (JIRA:RHEL-173103)

• tools/lib/perf/Makefile: libperf includes appended after CFLAGS causes parallel build race, breaking kernel builds [rhel-10.2.z] (JIRA:RHEL-183975)

• [RHEL10-debug]: BUG: KASAN: slab-use-after-free in __pv_queued_spin_lock_slowpath [rhel-10.2.z] (JIRA:RHEL-186311)

• ice: driver update 2026-06, part 1 [rhel-10.2.z] (JIRA:RHEL-191324)

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-debuginfo-common-ppc64le-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-debug-debuginfo-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-core-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-cross-headers-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-rt-devel-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-debug-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-debuginfo-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-modules-core-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-devel-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-rt-debug-modules-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-64k-debug-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-modules-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debuginfo-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-tools-libs-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-modules-extra-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-debug-devel-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-debug-uki-virt-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-core-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-cross-headers-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-tools-libs-devel-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-core-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-debug-devel-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-headers-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-rt-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-debug-modules-core-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-tools-libs-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-uki-virt-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-64k-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-devel-matched-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-debug-core-6.12.0-211.37.1.el10_2.x86_64.rpm
• perf-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-debug-devel-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-devel-matched-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-debug-modules-core-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-modules-core-6.12.0-211.37.1.el10_2.ppc64le.rpm
• python3-perf-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-64k-modules-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-tools-debuginfo-6.12.0-211.37.1.el10_2.s390x.rpm
• perf-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-debug-modules-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-64k-modules-6.12.0-211.37.1.el10_2.aarch64.rpm
• perf-debuginfo-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-zfcpdump-modules-core-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-rt-64k-debug-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-devel-matched-6.12.0-211.37.1.el10_2.s390x.rpm
• python3-perf-6.12.0-211.37.1.el10_2.aarch64.rpm
• rtla-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-devel-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-modules-extra-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-zfcpdump-modules-6.12.0-211.37.1.el10_2.s390x.rpm
• python3-perf-debuginfo-6.12.0-211.37.1.el10_2.x86_64.rpm
• rv-6.12.0-211.37.1.el10_2.x86_64.rpm
• rtla-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-modules-extra-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-modules-core-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-debug-modules-core-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-debug-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-debug-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-64k-modules-extra-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-devel-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-64k-debug-modules-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-core-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-headers-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-tools-debuginfo-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-headers-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-tools-libs-devel-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-zfcpdump-core-6.12.0-211.37.1.el10_2.s390x.rpm
• rv-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-64k-debug-modules-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-modules-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-devel-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-modules-extra-matched-6.12.0-211.37.1.el10_2.s390x.rpm
• libperf-debuginfo-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-debuginfo-common-x86_64-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-64k-modules-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-core-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-64k-devel-matched-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-modules-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-rt-64k-modules-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-modules-6.12.0-211.37.1.el10_2.x86_64.rpm
• libperf-debuginfo-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-rt-debug-modules-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-64k-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-debuginfo-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-zfcpdump-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-tools-libs-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-64k-debug-modules-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-modules-core-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-uki-virt-addons-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-64k-modules-extra-6.12.0-211.37.1.el10_2.aarch64.rpm
• rtla-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-modules-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-modules-extra-matched-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debuginfo-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-rt-64k-debug-devel-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-modules-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-64k-debug-modules-extra-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-modules-core-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-64k-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-debug-modules-extra-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-tools-libs-devel-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-debug-6.12.0-211.37.1.el10_2.x86_64.rpm
• libperf-6.12.0-211.37.1.el10_2.x86_64.rpm
• perf-6.12.0-211.37.1.el10_2.s390x.rpm
• perf-debuginfo-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-debug-devel-6.12.0-211.37.1.el10_2.aarch64.rpm
• perf-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-doc-6.12.0-211.37.1.el10_2.noarch.rpm
• kernel-modules-extra-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-debuginfo-common-s390x-6.12.0-211.37.1.el10_2.s390x.rpm
• rv-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-devel-matched-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-zfcpdump-devel-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-zfcpdump-modules-extra-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-debug-modules-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-64k-debug-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-cross-headers-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-tools-6.12.0-211.37.1.el10_2.s390x.rpm
• libperf-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-64k-debug-modules-extra-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-headers-6.12.0-211.37.1.el10_2.aarch64.rpm
• perf-6.12.0-211.37.1.el10_2.aarch64.rpm
• perf-debuginfo-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-rt-debug-modules-extra-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-debug-modules-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-modules-extra-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-64k-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-modules-extra-matched-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-rt-modules-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-modules-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-uki-virt-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-64k-debug-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-64k-debug-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• libperf-6.12.0-211.37.1.el10_2.s390x.rpm
• rtla-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-debug-debuginfo-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-tools-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-debug-core-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-64k-devel-6.12.0-211.37.1.el10_2.aarch64.rpm
• python3-perf-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-debug-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-tools-debuginfo-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-zfcpdump-debuginfo-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-64k-debug-devel-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-64k-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-modules-extra-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-cross-headers-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-devel-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-debug-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-debug-debuginfo-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-64k-debug-modules-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-rt-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-tools-6.12.0-211.37.1.el10_2.ppc64le.rpm
• libperf-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-debuginfo-common-aarch64-6.12.0-211.37.1.el10_2.aarch64.rpm
• python3-perf-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-6.12.0-211.37.1.el10_2.src.rpm
• python3-perf-debuginfo-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-64k-debug-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-devel-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-modules-extra-6.12.0-211.37.1.el10_2.ppc64le.rpm
• rv-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-debug-devel-matched-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-rt-debug-devel-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-rt-debug-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-modules-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-rt-modules-core-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-uki-virt-addons-6.12.0-211.37.1.el10_2.x86_64.rpm
• libperf-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-devel-matched-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-tools-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-64k-devel-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-modules-extra-matched-6.12.0-211.37.1.el10_2.x86_64.rpm
• python3-perf-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debug-modules-extra-6.12.0-211.37.1.el10_2.ppc64le.rpm
• libperf-debuginfo-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-zfcpdump-devel-matched-6.12.0-211.37.1.el10_2.s390x.rpm
• python3-perf-debuginfo-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-rt-modules-extra-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-devel-matched-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-rt-core-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-64k-debug-devel-matched-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-tools-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-debuginfo-6.12.0-211.37.1.el10_2.ppc64le.rpm
• kernel-modules-extra-6.12.0-211.37.1.el10_2.s390x.rpm
• kernel-rt-64k-debuginfo-6.12.0-211.37.1.el10_2.aarch64.rpm
• kernel-abi-stablelists-6.12.0-211.37.1.el10_2.noarch.rpm
• kernel-debug-devel-matched-6.12.0-211.37.1.el10_2.x86_64.rpm
• kernel-debug-modules-6.12.0-211.37.1.el10_2.aarch64.rpm

Fixes

• This content is not included.BZ - 2429611
• This content is not included.BZ - 2432366
• This content is not included.BZ - 2439941
• This content is not included.BZ - 2460644
• This content is not included.BZ - 2482523
• This content is not included.BZ - 2482612
• This content is not included.BZ - 2482615
• This content is not included.BZ - 2492284
• This content is not included.BZ - 2492318
• This content is not included.BZ - 2492390
• This content is not included.BZ - 2492458

CVEs

• CVE-2025-71113
• CVE-2025-71147
• CVE-2026-23168
• CVE-2026-31530
• CVE-2026-46116
• CVE-2026-46150
• CVE-2026-46215
• CVE-2026-52950
• CVE-2026-52976
• CVE-2026-53009
• CVE-2026-53071

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.