Bug 2525461 (CVE-2026-80703)

Summary:	CVE-2026-80703 kernel: drm/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE
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 Linux kernel's drm/amdkfd component. A local user with access to /dev/kfd could exploit a missing authorization check to terminate another process's active Graphics Processing Unit (GPU) debug session. This could lead to a denial of service for other users attempting to debug GPU applications.	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 2026-08-28 07:46:10 UTC

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

drm/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE

Prevent unauthorized termination of active GPU debug sessions.
Previously, users with /dev/kfd access could terminate another process's
debug session without proper ownership or ptrace authorization.

(cherry picked from commit 4db4c5ffd5585b72622ecf6ffedf2da258ee23f5)

Comment 1 gkamathe 2026-09-01 06:26:00 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026082806-CVE-2026-80703-8906@gregkh/T