CVE-2026-74512

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-74512

Key Details

CVE	CVE-2026-74512
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

audit: fix potential use-after-free in audit_del_rule()

`audit_del_rule()` destroys `e->rule.exe` via `audit_remove_mark_rule()`

before unlinking the rule from RCU-visible filter lists and waiting for a

grace period. Concurrent readers in `audit_filter()` and

`audit_filter_rules()` still dereference `e->rule.exe`, while the fsnotify

mark can be freed on an independent lifetime path. This creates a

use-after-free window during rule deletion.

Fix this by unlinking the rule from the RCU-visible lists and invoking

`synchronize_rcu()` before calling `audit_remove_mark_rule()` (and other

rule removal helpers). This ensures that all existing RCU readers have

exited the critical section before any underlying resources are destroyed. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74512
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74512

Source

Reference

NVD

CVE