Bug 2516709 (CVE-2026-72456)

Summary:	CVE-2026-72456 kernel: apparmor: release exe file resources on path failure
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in AppArmor within the Linux kernel. When the `get_current_exe_path()` function encounters a path resolution failure, it fails to properly release file and path references. This resource leak could be exploited by a local attacker, potentially leading to a Denial of Service (DoS) by exhausting system resources.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-08-15 06:27:02 UTC

In the Linux kernel, the following vulnerability has been resolved:

apparmor: release exe file resources on path failure

get_current_exe_path() takes both an exe_file reference and a path
reference before resolving the path name. If aa_path_name() failed, it
returned immediately and leaked both references.

Route the failure through the common cleanup path so fput() and path_put()
always run after the references are acquired.

Comment 1 gkamathe 2026-08-19 07:05:03 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081532-CVE-2026-72456-427b@gregkh/T