Bug 2401802 (CVE-2025-59730)

Summary:	CVE-2025-59730 FFmpeg: Heap-buffer-overflow write in FFmpeg SANM decoding due to lack of bounds-checking in old_codec48
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:	gtanzill, jbuscemi
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:		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:
Bug Depends On:	2401821, 2401822, 2401824, 2401829, 2401836, 2401841, 2401847, 2401851, 2401854
Bug Blocks:

Description OSIDB Bzimport 2025-10-06 09:01:46 UTC

When decoding a frame for a SANM file (ANIM v0 variant), the decoded data can be larger than the buffer allocated for it.

Frames encoded with codec 48 can specify their resolution (width x height). A buffer of appropriate size is allocated depending on the resolution.

This codec can encode the frame contents using a run-length encoding algorithm. There are no checks that the decoded frame fits in the allocated buffer, leading to a heap-buffer-overflow.

process_frame_obj initializes the buffers based on the frame resolution:



We recommend upgrading to version 8.0 or beyond.