RHSA-2026:27731: kernel security update

RHSA-2026:27731, released March 12, 2026, fixes 14 CVEs in kernel (version 6.12.0-55.82.1.el10_0). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0073

54th percentile

Priority of the 14 CVEs

Patch now 0
                                Urgent 1
                                High 13
                                Routine 0

Fixed package versions

Product	Release	Fixed in
kernel	RHEL 10	6.12.0-55.82.1.el10_0

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-45898	linux: In the Linux kernel, the following vulnerability has been resolved: RDMA/iwcm: Fix workqueue list corruption by remo...	9.8	0.0053	None reported
High	CVE-2026-43501	ipv6: rpl: reserve mac_len headroom when recompressed SRH grows	9.8	0.0073	None reported
High	CVE-2025-40135	ipv6: use RCU in ip6_xmit()	8.4	0.0071	None reported
High	CVE-2026-46331	net/sched: fix pedit partial COW leading to page cache corruption	8.1	0.0064	None reported
High	CVE-2025-40158	ipv6: use RCU in ip6_output()	8.1	0.0056	None reported
High	CVE-2026-46125	wifi: mac80211: remove station if connection prep fails	8.8	0.0030	None reported
High	CVE-2026-23136	linux: In the Linux kernel, the following vulnerability has been resolved: libceph: reset sparse-read state in osd_fault()...	8.1	0.0025	None reported
High	CVE-2025-40170	net: use dst_dev_rcu() in sk_setup_caps()	8.1	0.0019	None reported
High	CVE-2025-38154	kernel-64kb: The SUSE Linux Enterprise 15 SP7 kernel was updated to receive various security bugfixes. The following security bug...	7.8	0.0019	None reported
High	CVE-2026-46323	net: gro: don't merge zcopy skbs	8.4	0.0014	None reported
High	CVE-2026-46227	sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL	8.4	0.0010	None reported
High	CVE-2026-31474	can: isotp: fix tx.buf use-after-free in isotp_sendmsg()	7.8	0.0010	None reported
High	CVE-2026-43116	netfilter: ctnetlink: ensure safe access to master conntrack	8.8	0.0010	None reported
High	CVE-2025-30156	Ceph: AES-CBC misuse in CephX and RADOSGW enables authentication bypass and credential forgery	8.9	0.0009	None reported

Also fixes CVE-2026-45898

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
ELSA-2026-50372
kernel-uek, kernel-uek-core, kernel-uek-debug and 32 more on ol 10, ol 9
ALAS2023-2026-1543
bpftool6.12, bpftool6.12-debuginfo, kernel-livepatch-6.12.77-99.140 and 19 more on amzn 2023
ALAS2023-2026-1514
bpftool6.18, bpftool6.18-debuginfo, kernel-livepatch-6.18.15-14.217 and 19 more on amzn 2023
ALSA-2026:30129
kernel, kernel-64k, kernel-64k-core and 72 more on almalinux 10
ELSA-2026-30129
kernel, kernel-abi-stablelists, kernel-core and 27 more on ol 10
RLSA-2026:30129
kernel on rocky 10

Vendor advisory

https://access.redhat.com/errata/RHSA-2026:27731

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