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CVE-2026-72459

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: apparmor: aa_label_alloc use aa_label_free on alloc failure aa_label_alloc() allocates a secid before allocating or taking the…

Published Aug 15, 2026EPSS 0.18%

Overview

CVE-2026-72459 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:

apparmor: aa_label_alloc use aa_label_free on alloc failure

aa_label_alloc() allocates a secid before allocating or taking the label

proxy. If the later proxy step fails, the error path only freed the label

memory, leaking any resources initialized by aa_label_init().

Use aa_label_free() on the failure path so partially initialized labels

release their secid and other label resources before the backing memory is

freed.

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/654fe7505dc6889724d4094fa64f89991afabfc3Refgit.kernel.org/stable/c/6d91479174240f39e9edea250d95fa08c678a207Refgit.kernel.org/stable/c/7cb69e109610bba500e1ecb870f7988a4717208aRefgit.kernel.org/stable/c/ae02e603c0b39b29f3ce6fe3efe01b286af1a2a4Refgit.kernel.org/stable/c/b14fbacad77d64594228983ec20d61a224f3f491Refgit.kernel.org/stable/c/b5a9da5d36162d34db0f36abb15420e295176793Refgit.kernel.org/stable/c/bf310b044e85d4de670c94295c5d8e4c5bc5e7bcRefgit.kernel.org/stable/c/cc2192899d502e3321e60cf1e91421e7309d089c

How CyberStrike helps

Frequently asked questions

What is CVE-2026-72459?

CVE-2026-72459 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-2026-72459?

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-2026-72459?

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-2026-72459?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-72459 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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