Bug 2532792 (CVE-2026-52296)

Summary: CVE-2026-52296 ffmpeg: out-of-bounds read due to missing required padding in WMA extradata allocation paths
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bbrownin
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in FFmpeg. An out-of-bounds read can occur when a specially crafted file is encoded into the WMA (Windows Media Audio) format due to a missing required padding in extradata allocation. This issue can lead to an application crash, resulting in a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2533265, 2533269, 2533270, 2533264, 2533267    
Bug Blocks:    

Description OSIDB Bzimport 2026-09-13 22:01:18 UTC
FFmpeg before 9.0 has an out-of-bounds read because of missing required padding in WMA extradata allocation paths in libavcodec/wmaenc.c.