ELSA-2026-18134: Security update for 30 packages

ELSA-2026-18134, released July 20, 2026, fixes 28 CVEs across 30 products. 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

0.0113

66th percentile

Priority of the 28 CVEs

Patch now 0
                                Urgent 1
                                High 15
                                Routine 12

Fixed package versions

Product	Release	Fixed in
kernel	ol 10	0:6.12.0-211.34.1.el10_2
kernel-abi-stablelists	ol 10	0:6.12.0-211.34.1.el10_2
kernel-core	ol 10	0:6.12.0-211.34.1.el10_2
kernel-cross-headers	ol 10	0:6.12.0-211.34.1.el10_2
kernel-debug	ol 10	0:6.12.0-211.34.1.el10_2
kernel-debug-core	ol 10	0:6.12.0-211.34.1.el10_2
kernel-debug-devel	ol 10	0:6.12.0-211.34.1.el10_2
kernel-debug-devel-matched	ol 10	0:6.12.0-211.34.1.el10_2
kernel-debug-modules	ol 10	0:6.12.0-211.34.1.el10_2
kernel-debug-modules-core	ol 10	0:6.12.0-211.34.1.el10_2
kernel-debug-modules-extra	ol 10	0:6.12.0-211.34.1.el10_2
kernel-debug-uki-virt	ol 10	0:6.12.0-211.34.1.el10_2
kernel-devel	ol 10	0:6.12.0-211.34.1.el10_2
kernel-devel-matched	ol 10	0:6.12.0-211.34.1.el10_2
kernel-doc	ol 10	0:6.12.0-211.34.1.el10_2
kernel-headers	ol 10	0:6.12.0-211.34.1.el10_2
kernel-modules	ol 10	0:6.12.0-211.34.1.el10_2
kernel-modules-core	ol 10	0:6.12.0-211.34.1.el10_2
kernel-modules-extra	ol 10	0:6.12.0-211.34.1.el10_2
kernel-modules-extra-matched	ol 10	0:6.12.0-211.34.1.el10_2
kernel-tools	ol 10	0:6.12.0-211.34.1.el10_2
kernel-tools-libs	ol 10	0:6.12.0-211.34.1.el10_2
kernel-tools-libs-devel	ol 10	0:6.12.0-211.34.1.el10_2
kernel-uki-virt	ol 10	0:6.12.0-211.34.1.el10_2
kernel-uki-virt-addons	ol 10	0:6.12.0-211.34.1.el10_2
libperf	ol 10	0:6.12.0-211.34.1.el10_2
perf	ol 10	0:6.12.0-211.34.1.el10_2
python3-perf	ol 10	0:6.12.0-211.34.1.el10_2
rtla	ol 10	0:6.12.0-211.34.1.el10_2
rv	ol 10	0:6.12.0-211.34.1.el10_2

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2025-40320	linux: In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential cfid UAF in smb2_quer...	9.8	0.0045	None reported
High	CVE-2026-23111	kernel-default: The SUSE Linux Enterprise 15 SP6 kernel was updated to receive various security bugfixes. The following security bu...	7.8	0.0113	None reported
High	CVE-2025-40257	mptcp: fix a race in mptcp_pm_del_add_timer()	9.8	0.0050	None reported
High	CVE-2025-40210	Revert "NFSD: Remove the cap on number of operations per NFSv4 COMPOUND"	7.5	0.0036	None reported
High	CVE-2025-39866	fs: writeback: fix use-after-free in __mark_inode_dirty()	7.8	0.0031	None reported
High	CVE-2024-56633	linux: In the Linux kernel, the following vulnerability has been resolved: tcp_bpf: Fix the sk_mem_uncharge logic in tcp_bp...	7.8	0.0028	None reported
High	CVE-2025-38279	bpf: Do not include stack ptr register in precision backtracking bookkeeping	7.8	0.0024	None reported
High	CVE-2025-21839	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system	7.8	0.0023	None reported
High	CVE-2025-38267	kernel-abi-stablelists: The kernel packages contain the Linux kernel, the core of any Linux operating system	7.8	0.0021	None reported
High	CVE-2025-38346	ftrace: Fix UAF when lookup kallsym after ftrace disabled	7.8	0.0020	None reported
High	CVE-2025-38015	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system	7.0	0.0020	None reported
High	CVE-2026-23243	RDMA/umad: Reject negative data_len in ib_umad_write	7.8	0.0018	None reported
High	CVE-2026-23002	kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: x...	7.0	0.0018	None reported
High	CVE-2026-23040	linux: In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: fix typo in frequency noti...	7.6	0.0017	None reported
High	CVE-2025-39797	xfrm: Duplicate SPI Handling	7.8	0.0016	None reported
High	CVE-2026-23210	kernel-rt-core: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: L...	7.5	0.0010	None reported
Routine	CVE-2025-38405	kernel-debug-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system	5.5	0.0043	None reported
Routine	CVE-2025-40134	kernel-64k-debug-modules-core: The kernel packages contain the Linux kernel, the core of any Linux operating system	4.7	0.0023	None reported
Routine	CVE-2025-38275	phy: qcom-qmp-usb: Fix an NULL vs IS_ERR() bug	5.5	0.0021	None reported
Routine	CVE-2025-38470	net: vlan: fix VLAN 0 refcount imbalance of toggling filtering during runtime	5.5	0.0021	None reported
Routine	CVE-2025-38097	espintcp: remove encap socket caching to avoid reference leak	5.5	0.0021	None reported
Routine	CVE-2025-38166	bpf: fix ktls panic with sockmap	5.5	0.0020	None reported
Routine	CVE-2025-40034	kernel-modules: The kernel packages contain the Linux kernel, the core of any Linux operating system	6.6	0.0020	None reported
Routine	CVE-2025-38345	ACPICA: fix acpi operand cache leak in dswstate.c	5.5	0.0020	None reported
Routine	CVE-2025-37980	block: fix resource leak in blk_register_queue() error path	5.5	0.0019	None reported

Also fixes CVE-2025-40320

ALSA-2026:18134
kernel, kernel-64k, kernel-64k-core and 72 more on almalinux 10
SUSE-SU-2026:0315-1
kernel-64kb, kernel-default, kernel-default-base and 6 more on sles 15.7
SUSE-SU-2026:0281-1
kernel-azure, kernel-source-azure, kernel-syms-azure on sles 15.7
SUSE-SU-2026:0278-1
kernel-livepatch-SLE15-SP7-RT_Update_8 on sles 15.7
OPENSUSE-SU-2026:20145-1
dtb-aarch64, kernel-64kb, kernel-azure and 10 more on opensuse-leap 16.0
SUSE-SU-2026:20220-1
kernel-64kb, kernel-azure, kernel-default and 7 more on sles 16.0
SUSE-SU-2026:0293-1
dtb-aarch64, kernel-64kb, kernel-debug and 10 more on opensuse-leap 15.6, sles 15.6
ELSA-2026-50006
kernel-uek, kernel-uek-core, kernel-uek-debug and 32 more on ol 10, ol 9

Vendor advisory

https://linux.oracle.com/errata/ELSA-2026-18134.html

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