Bug 2506191 (CVE-2026-64834) - CVE-2026-64834 FFmpeg: Denial of Service via crafted RTP/ASF stream
Summary: CVE-2026-64834 FFmpeg: Denial of Service via crafted RTP/ASF stream
Keywords:
Status: NEW
Alias: CVE-2026-64834
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-22 18:01 UTC by OSIDB Bzimport
Modified: 2026-07-29 13:36 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-07-22 18:01:41 UTC 
FFmpeg versions 0.6.3 through 8.1.2 contain an infinite loop vulnerability in the RTP/ASF demuxer within libavformat/rtpdec_asf.c that allows remote attackers to cause denial of service by sending a crafted RTP/ASF stream. The rtp_asf_fix_header function fails to validate a minimum chunksize when iterating over ASF objects, causing the loop pointer to never advance when a chunksize is smaller than the 24-byte minimum ASF object header size, resulting in CPU exhaustion that denies service to legitimate users.
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