RLSA-2026:57252: kernel security update

RLSA-2026:57252, released August 21, 2026, fixes 26 CVEs in kernel (version 0:5.14.0-687.41.1.el9_8). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

2 rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0078

56th percentile

Priority of the 26 CVEs

Patch now 0
                                Urgent 2
                                High 24
                                Routine 0

Fixed package versions

Product	Release	Fixed in
kernel	rocky 9	0:5.14.0-687.41.1.el9_8

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-52991	sched/psi: fix race between file release and pressure write	9.8	0.0015	None reported
Urgent	CVE-2026-53374	drm/amdgpu: zero-initialize GART table on allocation	9.8	0.0013	None reported
High	CVE-2026-63888	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n...	9.8	0.0078	None reported
High	CVE-2026-64007	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n...	9.8	0.0051	None reported
High	CVE-2026-68388	smb/client: handle overlapping allocated ranges in fallocate	9.8	0.0051	None reported
High	CVE-2026-68343	smb: client: validate DFS referral PathConsumed	9.1	0.0051	None reported
High	CVE-2026-64560	linux: In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Prevent UAF caused by non-lead...	7.8	0.0050	None reported
High	CVE-2026-64048	python3-perf: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n...	7.8	0.0050	None reported
High	CVE-2026-43233	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n...	8.2	0.0046	None reported
High	CVE-2026-64386	smb: client: fix query_info() replay double-free	9.8	0.0046	None reported
High	CVE-2026-64382	smb: client: fix double-free in SMB2_open() replay	8.8	0.0035	None reported
High	CVE-2026-64379	smb: client: mask server-provided mode to 07777 in modefromsid	7.8	0.0031	None reported
High	CVE-2026-45878	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n...	7.8	0.0021	None reported
High	CVE-2026-45991	udf: fix partition descriptor append bookkeeping	7.8	0.0018	None reported
High	CVE-2026-63884	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: m...	7.8	0.0018	None reported
High	CVE-2026-64219	drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async	7.8	0.0017	None reported
High	CVE-2026-53143	drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11	7.8	0.0015	None reported
High	CVE-2026-53329	drm/amd/display: Use krealloc_array() in dal_vector_reserve()	7.8	0.0015	None reported
High	CVE-2026-63879	drm/amdgpu: fix amdgpu_hmm_range_get_pages	7.8	0.0014	None reported
High	CVE-2026-43206	kernel-zfcpdump-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: m...	7.8	0.0014	None reported
High	CVE-2026-53356	drm/i915/gem: Fix phys BO pread/pwrite with offset	7.8	0.0013	None reported
High	CVE-2026-53189	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n...	8.8	0.0013	None reported
High	CVE-2026-53136	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: m...	7.8	0.0013	None reported
High	CVE-2026-46120	bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n...	8.8	0.0013	None reported
High	CVE-2026-63952	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n...	8.4	0.0013	None reported

Also fixes CVE-2026-52991

SUSE-SU-2026:3790-1
kernel-64kb, kernel-azure, kernel-default and 7 more on sles 15.7
SUSE-SU-2026:3810-1
kernel-livepatch-SLE15-SP7-RT_Update_19 on sles 15.7
ALAS2023-2026-1866
bpftool6.18, bpftool6.18-debuginfo, kernel-livepatch-6.18.33-63.124 and 15 more on amzn 2023
OPENSUSE-SU-2026:21910-1
dtb-aarch64, kernel-64kb, kernel-azure and 10 more on opensuse-leap 16.0
SUSE-SU-2026:23902-1
kernel-64kb, kernel-azure, kernel-default and 7 more on sles 16.0
RHSA-2026:57252
kernel, kernel-64k, kernel-64k-core and 69 more on RHEL 9
ALSA-2026:57252
kernel, kernel-64k, kernel-64k-core and 71 more on almalinux 9
ELSA-2026-57252
kernel, kernel-abi-stablelists, kernel-core and 26 more on ol 9

Vendor advisory

https://errata.rockylinux.org/RLSA-2026:57252

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