RHSA-2026:55445: kernel security update

RHSA-2026:55445, released June 24, 2026, fixes 12 CVEs in kernel (version 6.12.0-55.98.1.el10_0). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

9.3

Base score, 0 to 10

Highest EPSS

0.0159

75th percentile

Priority of the 12 CVEs

Patch now 0
                                Urgent 1
                                High 10
                                Routine 1

Fixed package versions

Product	Release	Fixed in
kernel	RHEL 10	6.12.0-55.98.1.el10_0

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2025-10263	ARM: CVE-2025-10263 Completion of affected memory accesses might not be guaranteed by completion of a TLBI [kernel]	9.3	0.0054	Exploitation Less Likely
High	CVE-2026-23455	kernel: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: check for zero leng...	9.1	0.0159	None reported
High	CVE-2026-53264	net/sched: act_api: use RCU with deferred freeing for action lifecycle	7.8	0.0049	None reported
High	CVE-2026-53000	kernel: In the Linux kernel, the following vulnerability has been resolved: netfilter: nat: use kfree_rcu to release ops Flor...	7.8	0.0018	None reported
High	CVE-2025-71089	iommu: disable SVA when CONFIG_X86 is set	7.8	0.0016	None reported
High	CVE-2026-53059	dm log: fix out-of-bounds write due to region_count overflow	7.8	0.0014	None reported
High	CVE-2026-31488	drm/amd/display: Do not skip unrelated mode changes in DSC validation	7.8	0.0014	None reported
High	CVE-2026-45998	rxrpc: Fix potential UAF after skb_unshare() failure	7.8	0.0014	None reported
High	CVE-2026-43279	kernel: In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Add sanity check for OOB writes...	7.8	0.0012	None reported
High	CVE-2026-23375	kernel: In the Linux kernel, the following vulnerability has been resolved: mm: thp: deny THP for files on anonymous inodes f...	7.5	0.0012	None reported
High	CVE-2026-23110	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: c...	7.8	0.0011	None reported
Routine	CVE-2025-71131	kernel: In the Linux kernel, the following vulnerability has been resolved: crypto: seqiv - Do not use req->iv after crypto_a...	5.5	0.0031	None reported

Also fixes CVE-2025-10263

SUSE-SU-2026:22835-1
kernel-64kb, kernel-azure, kernel-default and 7 more on sles 16.0
OPENSUSE-SU-2026:21388-1
dtb-aarch64, kernel-64kb, kernel-azure and 10 more on opensuse-leap 16.0
SUSE-SU-2026:2799-1
kernel-livepatch-SLE15-SP7-RT_Update_17 on sles 15.7
ELSA-2026-34911
kernel, kernel-abi-stablelists, kernel-core and 27 more on ol 10
KB5093998
Windows 11 Version 22H2 for ARM64-based Systems, Windows 11 Version 22H2 for x64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems and 1 more
KB5094127
Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems and 4 more
KB5095051
Windows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems
KB5094126
Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems and 3 more

Vendor advisory

https://access.redhat.com/errata/RHSA-2026:55445

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