Bug 2541296 (CVE-2026-97579)

Summary:	CVE-2026-97579 kernel: media: mediatek: vcodec: bound AV1 tile-start copy to the array capacity
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:
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Doc Text:	A flaw was found in the Linux kernel's MediaTek video codec driver. An out-of-bounds write occurs during AV1 video decoding because tile information from the video stream is copied into fixed-size internal memory without proper bounds checking. A local user could exploit this flaw by submitting specially crafted video data, causing memory corruption that can lead to a system crash and Denial of Service (DoS) or potentially privilege escalation.	Story Points:	---
Clone Of:		Environment:
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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 11:16:15 UTC

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

media: mediatek: vcodec: bound AV1 tile-start copy to the array capacity

vdec_av1_slice_setup_tile() copies tile_cols + 1 / tile_rows + 1 entries
into mi_col_starts[] / mi_row_starts[] from the bitstream tile_info. Bound
the copy to the array capacity.

Comment 1 gkamathe 2026-09-29 05:47:09 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97579.mbox