Bug 2460652 (CVE-2026-31490)

Summary:	CVE-2026-31490 kernel: drm/xe/pf: Fix use-after-free in migration restore
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
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 Linux kernel's `drm/xe/pf` component. This vulnerability occurs when an error is returned during a migration restore operation, specifically from the `xe_sriov_pf_migration_restore_produce()` function, and the associated data pointer is not correctly cleared. This can lead to a use-after-free condition, which may allow an attacker to corrupt memory or cause a system crash, resulting in a denial of service.	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 2026-04-22 15:03:13 UTC

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

drm/xe/pf: Fix use-after-free in migration restore

When an error is returned from xe_sriov_pf_migration_restore_produce(),
the data pointer is not set to NULL, which can trigger use-after-free
in subsequent .write() calls.
Set the pointer to NULL upon error to fix the problem.

(cherry picked from commit 4f53d8c6d23527d734fe3531d08e15cb170a0819)

Comment 1 Keith Grant 2026-04-22 19:00:08 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026042201-CVE-2026-31490-8635@gregkh/T