Issued:: 2026-09-08
Updated:: 2026-09-08

RHSA-2026:64767 - 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: tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock() (CVE-2025-40149)
kernel: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry (CVE-2026-43114)
kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels (CVE-2026-46099)
kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)
kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)
kernel: smb/client: fix out-of-bounds read in smb2_compound_op() (CVE-2026-46155)
kernel: crypto: ccp - copy IV using skcipher ivsize (CVE-2026-53016)
kernel: ipv6: fix possible UAF in icmpv6_rcv() (CVE-2026-53006)
kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886)
kernel: crypto: qat - validate RSA CRT component lengths (CVE-2026-64304)

Bug Fix(es) and Enhancement(s):

Memory leak in metadata_dst leading to OOM [rhel-10.0.z] (JIRA:RHEL-125758)
Kernel panic in cached_dir_offload_close [rhel-10.0.z] (JIRA:RHEL-128580)
RHEL10.0 - s390/pci: Fix __pcilg_mio_inuser() inline assembly [rhel-10.0.z] (JIRA:RHEL-161485)

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.

Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture.

Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.

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-modules-extra-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-rt-kvm-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-uki-virt-6.12.0-55.103.1.el10_0.x86_64.rpm
libperf-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-debug-core-6.12.0-55.103.1.el10_0.aarch64.rpm
perf-debuginfo-6.12.0-55.103.1.el10_0.x86_64.rpm
python3-perf-6.12.0-55.103.1.el10_0.aarch64.rpm
libperf-6.12.0-55.103.1.el10_0.s390x.rpm
perf-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-devel-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-debug-devel-matched-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-debug-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-6.12.0-55.103.1.el10_0.s390x.rpm
libperf-6.12.0-55.103.1.el10_0.ppc64le.rpm
rv-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-debug-modules-core-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-64k-debug-modules-6.12.0-55.103.1.el10_0.aarch64.rpm
rv-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-rt-64k-debug-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-debug-modules-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-devel-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-rt-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-devel-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-devel-matched-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-uki-virt-addons-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-cross-headers-6.12.0-55.103.1.el10_0.x86_64.rpm
perf-debuginfo-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-debug-devel-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-debuginfo-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-debuginfo-common-x86_64-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-64k-debug-modules-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-zfcpdump-devel-matched-6.12.0-55.103.1.el10_0.s390x.rpm
perf-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-modules-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-devel-matched-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-64k-debug-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-devel-matched-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-cross-headers-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debuginfo-common-aarch64-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-tools-debuginfo-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-debug-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-debug-modules-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-64k-modules-extra-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-modules-extra-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-modules-core-6.12.0-55.103.1.el10_0.ppc64le.rpm
perf-debuginfo-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-doc-6.12.0-55.103.1.el10_0.noarch.rpm
rtla-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-zfcpdump-6.12.0-55.103.1.el10_0.s390x.rpm
rtla-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-64k-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-64k-debug-modules-extra-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-modules-extra-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-debug-modules-core-6.12.0-55.103.1.el10_0.x86_64.rpm
python3-perf-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debuginfo-common-s390x-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-rt-debug-devel-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-devel-matched-6.12.0-55.103.1.el10_0.ppc64le.rpm
rv-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-debug-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-debug-modules-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-6.12.0-55.103.1.el10_0.aarch64.rpm
rtla-6.12.0-55.103.1.el10_0.s390x.rpm
rv-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-modules-core-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-debug-debuginfo-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-rt-debuginfo-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-cross-headers-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-debuginfo-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-devel-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-core-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-rt-modules-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-modules-extra-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-tools-libs-devel-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-64k-debug-devel-matched-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-tools-debuginfo-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-debug-core-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-zfcpdump-modules-core-6.12.0-55.103.1.el10_0.s390x.rpm
libperf-debuginfo-6.12.0-55.103.1.el10_0.s390x.rpm
python3-perf-6.12.0-55.103.1.el10_0.ppc64le.rpm
python3-perf-debuginfo-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-tools-libs-devel-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-tools-libs-devel-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-debug-modules-core-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-modules-6.12.0-55.103.1.el10_0.aarch64.rpm
python3-perf-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-zfcpdump-debuginfo-6.12.0-55.103.1.el10_0.s390x.rpm
python3-perf-debuginfo-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-debug-core-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-64k-devel-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-modules-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-devel-matched-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-headers-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-debug-modules-extra-6.12.0-55.103.1.el10_0.x86_64.rpm
perf-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-debug-devel-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-devel-matched-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-rt-64k-modules-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-cross-headers-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-debug-modules-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-modules-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-64k-devel-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-devel-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-tools-6.12.0-55.103.1.el10_0.ppc64le.rpm
rtla-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-64k-debug-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-debuginfo-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-modules-core-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-64k-modules-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-core-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-abi-stablelists-6.12.0-55.103.1.el10_0.noarch.rpm
kernel-tools-libs-6.12.0-55.103.1.el10_0.x86_64.rpm
libperf-debuginfo-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-debug-modules-extra-6.12.0-55.103.1.el10_0.s390x.rpm
python3-perf-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-modules-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-64k-debug-devel-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-64k-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-debug-modules-extra-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-64k-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-zfcpdump-modules-extra-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-rt-debug-kvm-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-modules-extra-6.12.0-55.103.1.el10_0.x86_64.rpm
libperf-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-modules-core-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-rt-modules-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-core-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-rt-modules-extra-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-64k-debug-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-modules-core-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-6.12.0-55.103.1.el10_0.src.rpm
kernel-64k-debug-modules-extra-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-debug-core-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-64k-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-core-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-64k-debug-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-modules-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-64k-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-uki-virt-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-64k-debug-modules-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-64k-devel-matched-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-debug-modules-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-zfcpdump-core-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-devel-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-headers-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-zfcpdump-modules-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-64k-modules-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-tools-debuginfo-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-debug-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-modules-extra-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-tools-libs-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-headers-6.12.0-55.103.1.el10_0.s390x.rpm
perf-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-rt-64k-debug-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-debug-devel-matched-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-modules-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-modules-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-tools-libs-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-debug-modules-core-6.12.0-55.103.1.el10_0.aarch64.rpm
python3-perf-debuginfo-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-debug-devel-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-tools-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-uki-virt-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-debuginfo-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-debuginfo-common-ppc64le-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-debug-devel-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-debug-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-tools-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-uki-virt-addons-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-zfcpdump-devel-6.12.0-55.103.1.el10_0.s390x.rpm
kernel-debug-modules-extra-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-debug-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
libperf-debuginfo-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-64k-modules-extra-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-tools-6.12.0-55.103.1.el10_0.aarch64.rpm
perf-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-64k-debug-devel-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-64k-modules-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debug-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-64k-debug-modules-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-core-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-debuginfo-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-debug-debuginfo-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-headers-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-rt-64k-6.12.0-55.103.1.el10_0.aarch64.rpm
kernel-rt-core-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-rt-debug-devel-6.12.0-55.103.1.el10_0.x86_64.rpm
kernel-tools-6.12.0-55.103.1.el10_0.x86_64.rpm
libperf-debuginfo-6.12.0-55.103.1.el10_0.ppc64le.rpm
kernel-modules-extra-6.12.0-55.103.1.el10_0.ppc64le.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.