Bug 2541293 (CVE-2026-97621)

Summary:	CVE-2026-97621 kernel: drm/rockchip: analogix_dp: fix unchecked bound endpoint name length
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:	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 Rockchip Analogix DP driver. The driver formats a device tree path into a fixed-size stack buffer without verifying the input length. A local user capable of providing an excessively long device tree path can trigger a stack-based buffer overflow, leading to memory corruption or a Denial of Service (DoS) caused by a system crash.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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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 11:16:10 UTC

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

drm/rockchip: analogix_dp: fix unchecked bound endpoint name length

rockchip_dp_drm_encoder_enable() uses sprintf() to format a device tree
path into a 32-byte stack buffer. Device tree paths are not limited to
this size, so a sufficiently long path can overflow the buffer.

Use snprintf() with the destination size to truncate the generated name
and keep the writes within bounds.

Comment 1 Keith Grant 2026-09-29 16:13:02 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97621.mbox