RHSA-2026:76738: kernel security update

RHSA-2026:76738, released September 17, 2026, fixes 35 CVEs in kernel (version 6.12.0-211.63.1.el10_2). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

4 rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0075

55th percentile

Priority of the 35 CVEs

Patch now 0
                                Urgent 4
                                High 31
                                Routine 0

Fixed package versions

Product	Release	Fixed in
kernel	RHEL 10	6.12.0-211.63.1.el10_2

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-68476	linux: In the Linux kernel, the following vulnerability has been resolved: ipvs: reload ip header after head reallocation...	9.8	0.0071	None reported
Urgent	CVE-2026-89972	nvme: add missing SRCU grace period in error path	9.8	0.0071	None reported
Urgent	CVE-2026-63984	kernel-uek-debug: [5.15.0-323.211.3.3] - Revert 'x86/alternatives: Add alt_instr.flags' (Harshit Mogalapalli) [Orabug: 39853924] [5.1...	9.8	0.0051	None reported
Urgent	CVE-2026-64078	netfilter: x_tables: add and use xtables_unregister_table_exit	9.8	0.0013	None reported
High	CVE-2026-45860	linux: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conncount: increase the connection...	7.5	0.0075	None reported
High	CVE-2026-63922	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: t...	9.8	0.0071	None reported
High	CVE-2026-63924	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: t...	9.8	0.0071	None reported
High	CVE-2026-72320	netfilter: nft_lookup: fix catchall element handling with inverted lookups	9.1	0.0057	None reported
High	CVE-2026-74746	netfilter: flowtable: publish GC-visible tuple last	9.8	0.0054	None reported
High	CVE-2026-63994	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system	9.8	0.0051	None reported
High	CVE-2026-74669	ipvs: clear IPv4 options after rebasing tunnel ICMP errors	9.8	0.0051	None reported
High	CVE-2026-63992	kernel-rt-64k-debug-modules-core: The kernel packages contain the Linux kernel, the core of any Linux operating system	9.1	0.0051	None reported
High	CVE-2026-64132	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system	9.8	0.0049	None reported
High	CVE-2026-97417	netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack()	8.8	0.0049	None reported
High	CVE-2026-53357	Bluetooth: fix UAF in l2cap_sock_cleanup_listen() vs l2cap_conn_del()	8.0	0.0033	None reported
High	CVE-2026-64024	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system	9.4	0.0031	None reported
High	CVE-2026-64557	linux: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2cap_so...	8.8	0.0029	None reported
High	CVE-2026-46275	Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths	7.8	0.0023	None reported
High	CVE-2026-80792	ipv6: fix use-after-free in ip6_finish_output2()	8.1	0.0020	None reported
High	CVE-2026-45856	linux: In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Validate wqe_size before using it i...	8.8	0.0019	None reported
High	CVE-2026-80775	linux: In the Linux kernel, the following vulnerability has been resolved: futex: Fix race on the initial mm->futex.phash.r...	7.0	0.0019	None reported
High	CVE-2026-72255	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: t...	8.8	0.0018	None reported
High	CVE-2026-63920	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system	8.1	0.0017	None reported
High	CVE-2026-90227	nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed()	8.8	0.0017	None reported
High	CVE-2026-63918	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system	7.8	0.0016	None reported

Also fixes CVE-2026-89972

ELSA-2026-76738
kernel, kernel-abi-stablelists, kernel-core and 27 more on ol 10
ALSA-2026:76738
kernel, kernel-64k, kernel-64k-core and 72 more on almalinux 10
ELSA-2026-500572
kernel-uek, kernel-uek-core, kernel-uek-debug and 32 more on ol 10, ol 9
ELSA-2026-76739
kernel, kernel-abi-stablelists, kernel-core and 26 more on ol 9
RHSA-2026:76739
kernel, kernel-64k, kernel-64k-core and 69 more on RHEL 9
RLSA-2026:75746
kernel-rt on rocky 8
RLSA-2026:75747
kernel on rocky 8
RHSA-2026:75746
kernel-rt, kernel-rt-core, kernel-rt-debug and 9 more on RHEL 8

Vendor advisory

https://access.redhat.com/errata/RHSA-2026:76738

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