Bug 2516520 (CVE-2026-72331)

Summary:	CVE-2026-72331 kernel: accel/amdxdna: Fix VMA access race
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 the `accel/amdxdna` component of the Linux kernel. The `aie2_populate_range()` and `amdxdna_umap_release()` functions access a saved Virtual Memory Area (VMA) pointer that may have already been freed. This race condition can lead to a use-after-free vulnerability, which could result in system instability or potentially allow a local attacker to escalate privileges.	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 06:16:46 UTC

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

accel/amdxdna: Fix VMA access race

aie2_populate_range() and amdxdna_umap_release() access a saved VMA
pointer that may have already been freed, leading to a potential
use-after-free.

Remove the VMA accesses from these functions to avoid the race.

Comment 1 gkamathe 2026-08-18 14:27:16 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081508-CVE-2026-72331-88e3@gregkh/T