RHSA-2026:21557: kernel security update

RHSA-2026:21557, released May 6, 2026, fixes 2 CVEs in kernel (version 6.12.0-211.18.1.el10_2). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.8

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
kernel	RHEL 10	6.12.0-211.18.1.el10_2

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-43205	linux: In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: validate num_ifs to prevent out-of...	7.8	0.0014	None reported
High	CVE-2026-43006	linux: In the Linux kernel, the following vulnerability has been resolved: io_uring/rsrc: reject zero-length fixed buffer i...	7.5	0.0012	None reported

Also fixes CVE-2026-43205

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-2026:3166-1
kernel-64kb, kernel-azure, kernel-default and 7 more on sles 15.7
SUSE-SU-2026:3130-1
kernel-livepatch-SLE15-SP7-RT_Update_18 on sles 15.7
ELSA-2026-21557
kernel, kernel-abi-stablelists, kernel-core and 27 more on ol 10
RLSA-2026:21557
kernel on rocky 10
ALSA-2026:21557
kernel, kernel-64k, kernel-64k-core and 72 more on almalinux 10
DEBIAN-CVE-2026-43205
linux on Debian 12.15 (bookworm), Debian 13.5 (trixie), Debian 14

Vendor advisory

https://access.redhat.com/errata/RHSA-2026:21557

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