Bug 2519763 (CVE-2026-75147) - CVE-2026-75147 ffmpeg: FFmpeg: Information disclosure or denial of service via crafted AV1 RTP packet
Summary: CVE-2026-75147 ffmpeg: FFmpeg: Information disclosure or denial of service vi...
Keywords:
Status: NEW
Alias: CVE-2026-75147
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2525514 2525515
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-19 16:53 UTC by OSIDB Bzimport
Modified: 2026-08-28 09:14 UTC (History)
3 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-19 16:53:29 UTC
FFmpeg before commit 983dae9 contains an out-of-bounds read in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The keyframe detection loop that searches for a sequence header OBU advanced its pointer and remaining-size counter by the encoded header length plus the OBU payload size without first bounding the OBU size against the remaining data. A crafted OBU size causes the remaining-size counter to wrap to a positive value, causing the next loop iteration to dereference a pointer beyond the end of the packet buffer. A crafted AV1 input packet muxed to RTP triggers the out-of-bounds read.


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