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CVE-2026-74512

7.8 · HIGH

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()…

Published Aug 15, 2026EPSS 0.13%

Overview

CVE-2026-74512 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/246df90b5f1a8a6e6abbd2f058b029558720adecRefgit.kernel.org/stable/c/3f82927b399d7a276c0c12b6ff4424b747a0c9a7Refgit.kernel.org/stable/c/45bf3df5b32e5a49953e7ceabc55f7dd85380e46Refgit.kernel.org/stable/c/5b8f46864f06d6dbacb7dcea52bc084dfd122638Refgit.kernel.org/stable/c/78bde7e9bd36eaae1b8e8cfcd47f12a34f301dbfRefgit.kernel.org/stable/c/8ae135a8962be9d4e8a131eb18eb06cdf02a47ceRefgit.kernel.org/stable/c/93616c567469510b7bba55b2674e0c4523fd7e64Refgit.kernel.org/stable/c/cae0dfed5d307b240bff71c3cf206652d1b6f215

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74512?

CVE-2026-74512 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-74512?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-74512?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-74512?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74512 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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