Bug 2541017 (CVE-2026-97913)

Summary:	CVE-2026-97913 kernel: accel: ethosu: Ensure cmd stream ends with a stop op
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 Arm Ethos-U accelerator driver. This vulnerability can lead to a Denial of Service (DoS) through device timeouts or potential out-of-bounds memory access. A local user could exploit this issue by submitting a crafted command stream that lacks a required terminating stop operation or includes invalid control instructions.	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 2026-09-25 10:40:41 UTC

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

accel: ethosu: Ensure cmd stream ends with a stop op

While the QSIZE register setting should prevent an out of bounds access
of the command stream, it is not clear whether the h/w generates an
interrupt in this case as is required (to prevent a timeout). As a stop op
is expected end of the command stream, let's just ensure it is present. A
stop op in the middle of the command stream also makes no sense.

Comment 1 Keith Grant 2026-09-29 18:06:32 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97913.mbox