RHSA-2026:70402: Security update for 23 packages

RHSA-2026:70402, released September 23, 2026, fixes 20 CVEs across 23 products. One of them is being exploited (CVE-2025-39964); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEV

CVEs closed

3 rated Critical

Exploited

CVE-2025-39964

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0161

76th percentile

Priority of the 20 CVEs

Patch now 1
                                Urgent 3
                                High 16
                                Routine 0

Fixed package versions

Product	Release	Fixed in
bpftool	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-abi-stablelists	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-core	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-debug	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-debug-core	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-debug-devel	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-debug-modules	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-debug-modules-extra	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-devel	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-doc	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-modules	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-modules-extra	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-tools	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-tools-libs	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-tools-libs-devel	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-zfcpdump	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-zfcpdump-core	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-zfcpdump-devel	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-zfcpdump-modules	RHEL 8	0:4.18.0-553.166.1.el8_10
kernel-zfcpdump-modules-extra	RHEL 8	0:4.18.0-553.166.1.el8_10
perf	RHEL 8	0:4.18.0-553.166.1.el8_10
python3-perf	RHEL 8	0:4.18.0-553.166.1.el8_10

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Patch now	CVE-2025-39964	crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg	8.8	0.0161	KEVExploited
Urgent	CVE-2026-64534	linux: In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: check INIT_FAILED before nvmet_req_un...	9.8	0.0032	None reported
Urgent	CVE-2026-53053	iommu/amd: Fix clone_alias() to use the original device's devid	9.8	0.0013	None reported
Urgent	CVE-2026-53062	dm cache policy smq: fix missing locks in invalidating cache blocks	9.8	0.0010	None reported
High	CVE-2026-46133	RDMA/rxe: Reject unknown opcodes before ICRC processing	8.8	0.0057	None reported
High	CVE-2026-46043	RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv	9.1	0.0051	None reported
High	CVE-2026-63947	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system	8.8	0.0035	None reported
High	CVE-2023-54120	linux: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix race condition in hidp_session_th...	8.8	0.0031	None reported
High	CVE-2023-54214	linux: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix potential user-after-free...	8.8	0.0030	None reported
High	CVE-2026-43334	kernel: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SMP: force responder MITM requirements...	8.8	0.0028	None reported
High	CVE-2026-53254	Bluetooth: RFCOMM: validate skb length in MCC handlers	8.1	0.0028	None reported
High	CVE-2026-63975	kernel-rt-64k-debug-core: The kernel packages contain the Linux kernel, the core of any Linux operating system	8.8	0.0027	None reported
High	CVE-2026-53256	kernel-rt-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system	8.1	0.0026	None reported
High	CVE-2026-52918	Bluetooth: serialize accept_q access	8.8	0.0022	None reported
High	CVE-2026-68188	Bluetooth: RFCOMM: Fix session UAF in set_termios	8.8	0.0022	None reported
High	CVE-2026-64582	RDMA/rxe: Fix a use-after-free problem in rxe_mmap	8.8	0.0017	None reported
High	CVE-2026-63823	keys: Pin request_key_auth payload in instantiate paths	8.8	0.0016	None reported
High	CVE-2025-71082	Bluetooth: btusb: revert use of devm_kzalloc in btusb	7.8	0.0015	None reported
High	CVE-2026-68293	net/mlx5: Fix MCIA register buffer overflow on 32 dword reads	8.8	0.0014	None reported
High	CVE-2026-45894	iommu/vt-d: Clear Present bit before tearing down PASID entry	8.8	0.0013	None reported

Also fixes CVE-2025-39964

OPENSUSE-SU-2026:21555-1
dtb-aarch64, kernel-64kb, kernel-azure and 10 more on opensuse-leap 16.0
SUSE-SU-2026:23237-1
kernel-default on sles 16.0
SUSE-SU-2026:23231-1
kernel-64kb, kernel-azure, kernel-default-base and 6 more on sles 16.0
RHSA-2026:71326
kernel on RHEL 10
ALAS2023-2025-1254
bpftool6.12, bpftool6.12-debuginfo, kernel-livepatch-6.12.53-69.119 and 19 more on amzn 2023
ALAS2023-2025-1223
bpftool, bpftool-debuginfo, kernel and 19 more on amzn 2023
ELSA-2025-20719
kernel-uek, kernel-uek-core, kernel-uek-debug and 32 more on ol 10, ol 9
SUSE-SU-2026:4120-1
kernel-livepatch-SLE15-SP7-RT_Update_20 on sles 15.7

Vendor advisory

https://access.redhat.com/errata/RHSA-2026:70402

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