RLSA-2026:64808: kernel security update

RLSA-2026:64808, released September 9, 2026, fixes 8 CVEs in kernel (version 0:5.14.0-687.45.1.el9_8). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0080

56th percentile

Priority of the 8 CVEs

Patch now 0
                                Urgent 1
                                High 7
                                Routine 0

Fixed package versions

Product	Release	Fixed in
kernel	rocky 9	0:5.14.0-687.45.1.el9_8

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-64319	linux: In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: validate reply message payload bound...	9.1	0.0056	None reported
High	CVE-2026-64320	nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page	9.1	0.0080	None reported
High	CVE-2026-64384	smb: client: fix change notify replay double-free	9.8	0.0046	None reported
High	CVE-2026-64136	kernel: In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tc_count increment in smb2_f...	9.8	0.0041	None reported
High	CVE-2025-38004	can: bcm: add locking for bcm_op runtime updates	7.8	0.0028	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-2026-64287	KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU	8.2	0.0018	None reported
High	CVE-2026-52933	io_uring/poll: fix signed comparison in io_poll_get_ownership()	7.8	0.0015	None reported

Also fixes CVE-2026-64319

ELSA-2026-500248
kernel-uek, kernel-uek-core, kernel-uek-debug and 32 more on ol 10, ol 9
SUSE-SU-2026:4660-1
kernel-default, kernel-default-base, kernel-docs and 4 more on sles 15.6
SUSE-SU-2026:4640-1
kernel-livepatch-SLE15-SP7-RT_Update_21 on sles 15.7
SUSE-SU-2026:4706-1
kernel-64kb, kernel-azure, kernel-default and 7 more on sles 15.7
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-2026:64808
kernel, kernel-64k, kernel-64k-core and 69 more on RHEL 9
ELSA-2026-64808-0
kernel, kernel-abi-stablelists, kernel-core and 26 more on ol 9

Vendor advisory

https://errata.rockylinux.org/RLSA-2026:64808

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