RHSA-2026:81523: Security update for 5 packages

RHSA-2026:81523, released October 13, 2026, fixes 2 CVEs across 5 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

8.8

Base score, 0 to 10

Highest EPSS

0.0014

3rd percentile

Priority of the 2 CVEs

Patch now 0
                                Urgent 0
                                High 2
                                Routine 0

Fixed package versions

Product	Release	Fixed in
kpatch-patch-4_18_0-553_109_1	RHEL 8	0:1-13.el8_10
kpatch-patch-4_18_0-553_125_1	RHEL 8	0:1-10.el8_10
kpatch-patch-4_18_0-553_158_1	RHEL 8	0:1-2.el8_10
kpatch-patch-4_18_0-553_72_1	RHEL 8	0:1-17.el8_10
kpatch-patch-4_18_0-553_85_1	RHEL 8	0:1-15.el8_10

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-46181	RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event()	8.8	0.0014	None reported
High	CVE-2026-64002	kernel: In the Linux kernel, the following vulnerability has been resolved: ipv4: free net->ipv4.sysctl_local_reserved_ports...	8.8	0.0013	None reported

Also fixes CVE-2026-46181

SUSE-SU-2026:2482-1
kernel-64kb, kernel-azure, kernel-default and 7 more on sles 15.7
SUSE-SU-2026:2591-1
kernel-livepatch-SLE15-SP7-RT_Update_16 on sles 15.7
RHSA-2026:25120
kernel-rt, kernel-rt-core, kernel-rt-debug and 9 more on RHEL 8
RHSA-2026:25121
bpftool, kernel, kernel-abi-stablelists and 20 more on RHEL 8
RXSA-2026:25121
kernel on rocky 8
ELSA-2026-25121
bpftool, kernel, kernel-abi-stablelists and 17 more on ol 8
RLSA-2026:25120
kernel-rt on rocky 8
ALSA-2026:25120
kernel-rt, kernel-rt-core, kernel-rt-debug and 7 more on almalinux 8

Vendor advisory

https://access.redhat.com/errata/RHSA-2026:81523

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