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CVE-2026-72459

HIGHCVSS 7.8/10EPSS 0.18%

Last modified

CVE-2026-72459 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.18%

8.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= f1bd904175e8190ce14aedee37e207ab51fe3b30, < b14fbacad77d64594228983ec20d61a224f3f491; >= f1bd904175e8190ce14aedee37e207ab51fe3b30, < b5a9da5d36162d34db0f36abb15420e295176793; >= f1bd904175e8190ce14aedee37e207ab51fe3b30, < 7cb69e109610bba500e1ecb870f7988a4717208a; >= f1bd904175e8190ce14aedee37e207ab51fe3b30, < cc2192899d502e3321e60cf1e91421e7309d089c; >= f1bd904175e8190ce14aedee37e207ab51fe3b30, < bf310b044e85d4de670c94295c5d8e4c5bc5e7bc; >= f1bd904175e8190ce14aedee37e207ab51fe3b30, < ae02e603c0b39b29f3ce6fe3efe01b286af1a2a4; >= f1bd904175e8190ce14aedee37e207ab51fe3b30, < 6d91479174240f39e9edea250d95fa08c678a207; >= f1bd904175e8190ce14aedee37e207ab51fe3b30, < 654fe7505dc6889724d4094fa64f89991afabfc3
LinuxLinux4.13

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72459?
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.
How severe is CVE-2026-72459?
CVE-2026-72459 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72459?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST