What’s Vulnerable › Vulnerabilities

CVE-2026-72457: apparmor: fail policy unpack on accept2 allocation failure

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: apparmor: fail policy unpack on accept2 allocation failure unpack_pdb() may need to allocate a missing ACCEPT2 table for older policy data. If that allocation failed, it set an error message but jumped to the success path, returning a policydb with the required table missing. Return -ENOMEM through the normal failure path when the ACCEPT2 allocation fails. Remove the now-unused out label.

Affected products

• Linux kernel: 6.17 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/106e909e12baf059538f0b0f1a59f87781d25b3c
• https://git.kernel.org/stable/c/22dc9433d458cff1270f120685114a9753e0ad1b
• https://git.kernel.org/stable/c/45cf568241048e560a81aa2053f06a62069f5640

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