Bug 2454776 (CVE-2026-23418)

Summary:	CVE-2026-23418 kernel: drm/xe/reg_sr: Fix leak on xa_store failure
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
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. This memory leak vulnerability occurs when the `xa_store()` function fails to store a newly allocated entry, leading to the entry not being freed. An attacker could potentially exploit this flaw to exhaust system memory, resulting in a Denial of Service (DoS).	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 2026-04-03 14:01:56 UTC

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

drm/xe/reg_sr: Fix leak on xa_store failure

Free the newly allocated entry when xa_store() fails to avoid a memory
leak on the error path.

v2: use goto fail_free. (Bala)

(cherry picked from commit 6bc6fec71ac45f52db609af4e62bdb96b9f5fadb)

Comment 1 Alexander B 2026-04-03 15:00:15 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026040301-CVE-2026-23418-3cf7@gregkh/T