Bug 2516712 (CVE-2026-72461) - CVE-2026-72461 kernel: apparmor: fix refcount leak when updating the sk_ctx
Summary: CVE-2026-72461 kernel: apparmor: fix refcount leak when updating the sk_ctx
Keywords:
Status: NEW
Alias: CVE-2026-72461
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-15 06:27 UTC by OSIDB Bzimport
Modified: 2026-08-19 07:08 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-15 06:27:10 UTC 
In the Linux kernel, the following vulnerability has been resolved:

apparmor: fix refcount leak when updating the sk_ctx

Currently update_sk_ctx() transfers the plabel reference, unfortunately
it is also unconditionally put in the caller. Ideally we would make
the caller conditionally put the reference based on whether it was
transferred but for now just fix the bug by getting a reference.
Comment 1 gkamathe 2026-08-19 07:08:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081533-CVE-2026-72461-3dc3@gregkh/T
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