Issued:: 2026-05-20
Updated:: 2026-05-20

RHSA-2026:19568 - Important: kernel security update

Synopsis

Important: kernel security update

Type/Severity

Security Advisory Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.

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: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit (CVE-2025-39766)
kernel: scsi: qla2xxx: Fix improper freeing of purex item (CVE-2025-68741)
kernel: libceph: make decode_pool() more resilient against corrupted osdmaps (CVE-2025-71116)
kernel: libceph: prevent potential out-of-bounds reads in handle_auth_done() (CVE-2026-22984)
kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() (CVE-2026-22990)
kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state (CVE-2026-23136)
kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204)
kernel: Linux kernel: Use-after-free in traffic control (act_ct) may lead to denial of service or privilege escalation (CVE-2026-23270)
kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling (CVE-2026-23401)
kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (CVE-2026-31402)
kernel: can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532)
kernel: usbip: validate number_of_packets in usbip_pack_ret_submit() (CVE-2026-31607)
kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163)
kernel: RDMA/umem: Fix double dma_buf_unpin in failure path (CVE-2026-43128)
kernel: "Dirty Frag" is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284)
kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-46300)
kernel: Read root-owned files as an unprivileged user (CVE-2026-46333)

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	9	x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions	9.8	x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support	9.8	x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle	9.8	x86_64
Red Hat Enterprise Linux for Power, little endian	9	ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support	9.8	ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle	9.8	ppc64le
Red Hat Enterprise Linux for IBM z Systems	9	s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support	9.8	s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle	9.8	s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates	9.8	s390x
Red Hat Enterprise Linux for ARM 64	9	aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support	9.8	aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle	9.8	aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates	9.8	aarch64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions	9.8	ppc64le
Red Hat CodeReady Linux Builder for x86_64	9	x86_64
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support	9.8	x86_64
Red Hat CodeReady Linux Builder for Power, little endian	9	ppc64le
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support	9.8	ppc64le
Red Hat CodeReady Linux Builder for IBM z Systems	9	s390x
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support	9.8	s390x
Red Hat CodeReady Linux Builder for ARM 64	9	aarch64
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support	9.8	aarch64

Updated Packages

kernel-cross-headers-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-rt-debug-debuginfo-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-debug-devel-5.14.0-687.10.1.el9_8.aarch64.rpm
libperf-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debuginfo-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-modules-extra-5.14.0-687.10.1.el9_8.aarch64.rpm
perf-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-64k-5.14.0-687.10.1.el9_8.aarch64.rpm
perf-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-debuginfo-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-debug-uki-virt-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-64k-modules-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-modules-core-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-debug-5.14.0-687.10.1.el9_8.x86_64.rpm
libperf-debuginfo-5.14.0-687.10.1.el9_8.s390x.rpm
perf-debuginfo-5.14.0-687.10.1.el9_8.x86_64.rpm
rtla-5.14.0-687.10.1.el9_8.ppc64le.rpm
rtla-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-debug-devel-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-debug-5.14.0-687.10.1.el9_8.ppc64le.rpm
python3-perf-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-debug-devel-matched-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-rt-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-modules-extra-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-core-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-debug-modules-extra-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-64k-debug-devel-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-modules-extra-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-modules-extra-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-rt-debuginfo-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-debug-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-zfcpdump-devel-matched-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-64k-modules-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-modules-core-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-modules-core-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-core-5.14.0-687.10.1.el9_8.x86_64.rpm
python3-perf-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-core-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-tools-libs-devel-5.14.0-687.10.1.el9_8.aarch64.rpm
libperf-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-zfcpdump-modules-extra-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-core-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-modules-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-debug-core-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-debug-devel-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-zfcpdump-core-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-64k-modules-extra-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-64k-debug-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-modules-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-debuginfo-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-devel-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-rt-64k-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-64k-debug-modules-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-64k-modules-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-tools-libs-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-tools-libs-devel-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-uki-virt-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-uki-virt-addons-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-debug-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-tools-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-devel-matched-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-debug-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-modules-extra-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-cross-headers-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-64k-debug-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-zfcpdump-debuginfo-5.14.0-687.10.1.el9_8.s390x.rpm
libperf-5.14.0-687.10.1.el9_8.ppc64le.rpm
rv-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-devel-5.14.0-687.10.1.el9_8.aarch64.rpm
rv-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-headers-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-debug-modules-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-devel-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-modules-extra-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-devel-matched-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-core-5.14.0-687.10.1.el9_8.aarch64.rpm
libperf-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
libperf-debuginfo-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-modules-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-64k-debug-modules-extra-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-cross-headers-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-tools-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-64k-devel-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-rt-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-zfcpdump-devel-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-rt-debug-modules-extra-5.14.0-687.10.1.el9_8.x86_64.rpm
python3-perf-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-devel-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-doc-5.14.0-687.10.1.el9_8.noarch.rpm
kernel-tools-debuginfo-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-rt-64k-debug-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-debug-devel-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-modules-core-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-headers-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-headers-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-debug-devel-matched-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-modules-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-tools-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-tools-debuginfo-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-headers-5.14.0-687.10.1.el9_8.aarch64.rpm
rv-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-tools-debuginfo-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-rt-debug-modules-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-devel-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-tools-libs-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-cross-headers-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-debuginfo-common-x86_64-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-64k-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-debuginfo-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-debug-modules-core-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-debug-modules-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-64k-debug-modules-5.14.0-687.10.1.el9_8.aarch64.rpm
perf-debuginfo-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-devel-matched-5.14.0-687.10.1.el9_8.ppc64le.rpm
rtla-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-64k-devel-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-modules-extra-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-devel-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-debug-modules-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-modules-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-64k-debug-modules-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-core-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-zfcpdump-modules-5.14.0-687.10.1.el9_8.s390x.rpm
rtla-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-rt-debug-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-5.14.0-687.10.1.el9_8.src.rpm
kernel-rt-devel-5.14.0-687.10.1.el9_8.aarch64.rpm
libperf-debuginfo-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-debug-modules-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-core-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-64k-devel-matched-5.14.0-687.10.1.el9_8.aarch64.rpm
perf-5.14.0-687.10.1.el9_8.aarch64.rpm
perf-5.14.0-687.10.1.el9_8.ppc64le.rpm
libperf-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-devel-matched-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-modules-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-modules-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-devel-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-64k-modules-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-64k-debug-modules-extra-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-zfcpdump-modules-core-5.14.0-687.10.1.el9_8.s390x.rpm
python3-perf-debuginfo-5.14.0-687.10.1.el9_8.ppc64le.rpm
python3-perf-debuginfo-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-modules-extra-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-64k-debug-devel-matched-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-64k-debug-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debuginfo-common-s390x-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-64k-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-64k-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-64k-debug-modules-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-devel-matched-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-debug-modules-core-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-tools-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-rt-64k-modules-extra-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-abi-stablelists-5.14.0-687.10.1.el9_8.noarch.rpm
kernel-rt-64k-debug-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-modules-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-modules-core-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-debuginfo-common-aarch64-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debuginfo-common-ppc64le-5.14.0-687.10.1.el9_8.ppc64le.rpm
perf-debuginfo-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-debug-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-64k-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-debug-modules-extra-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-zfcpdump-5.14.0-687.10.1.el9_8.s390x.rpm
python3-perf-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-rt-debug-core-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-tools-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-debuginfo-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-modules-core-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-modules-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-rt-64k-debug-devel-5.14.0-687.10.1.el9_8.aarch64.rpm
kernel-tools-libs-5.14.0-687.10.1.el9_8.x86_64.rpm
perf-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-rt-modules-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-tools-libs-devel-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-64k-debug-core-5.14.0-687.10.1.el9_8.aarch64.rpm
python3-perf-debuginfo-5.14.0-687.10.1.el9_8.s390x.rpm
kernel-debug-debuginfo-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-debug-devel-matched-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-rt-debug-core-5.14.0-687.10.1.el9_8.aarch64.rpm
python3-perf-5.14.0-687.10.1.el9_8.x86_64.rpm
rv-5.14.0-687.10.1.el9_8.x86_64.rpm
kernel-debug-modules-core-5.14.0-687.10.1.el9_8.ppc64le.rpm
kernel-5.14.0-687.10.1.el9_8.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.