Bug 2525394 (CVE-2026-80619)

Summary:	CVE-2026-80619 kernel: apparmor: fix potential UAF in aa_replace_profiles
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
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Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the AppArmor security module of the Linux kernel. The `aa_replace_profiles` function was susceptible to a use-after-free (UAF) vulnerability. This occurred because the function accessed data after it had been deallocated, potentially allowing an attacker to cause a denial of service or execute arbitrary code.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-08-28 07:42:46 UTC

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

apparmor: fix potential UAF in aa_replace_profiles

The function aa_replace_profiles was accessing udata->size after calling
aa_put_loaddata(udata), causing a potential UAF.

Fixed this by saving the size to a local variable before dropping the
reference.

Comment 1 gkamathe 2026-08-31 09:53:36 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026082836-CVE-2026-80619-935d@gregkh/T