Bug 2540435 (CVE-2026-97497)

Summary:	CVE-2026-97497 kernel: drm/amdkfd: Check bounds for allocate_sdma_queue restore_sdma_id
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:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, 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 AMD GPU driver (amdkfd). The queue allocation mechanism failed to validate user-supplied SDMA (System Direct Memory Access) queue identifiers during queue restoration. A local user could exploit this vulnerability to trigger an out-of-bounds memory access, potentially causing a system crash and leading to 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 2026-09-24 16:48:41 UTC

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

drm/amdkfd: Check bounds for allocate_sdma_queue restore_sdma_id

allocate_sdma_queue has an option where the sdma queue id can be
specified (used by CRIU). We weren't bounds-checking that
value.

Confirm it's less than the maximum number of queues.

Comment 1 Mauro Matteo Cascella 2026-09-30 08:32:05 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97497.mbox