What’s Vulnerable › Vulnerabilities

CVE-2026-72459: apparmor: aa_label_alloc use aa_label_free on alloc failure

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% 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: 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.

Affected products

• Linux kernel: 4.13 — 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/654fe7505dc6889724d4094fa64f89991afabfc3
• https://git.kernel.org/stable/c/6d91479174240f39e9edea250d95fa08c678a207
• https://git.kernel.org/stable/c/7cb69e109610bba500e1ecb870f7988a4717208a
• https://git.kernel.org/stable/c/ae02e603c0b39b29f3ce6fe3efe01b286af1a2a4
• https://git.kernel.org/stable/c/b14fbacad77d64594228983ec20d61a224f3f491
• https://git.kernel.org/stable/c/b5a9da5d36162d34db0f36abb15420e295176793
• https://git.kernel.org/stable/c/bf310b044e85d4de670c94295c5d8e4c5bc5e7bc
• https://git.kernel.org/stable/c/cc2192899d502e3321e60cf1e91421e7309d089c

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