Bug 2545188 - CVE-2026-30754 ffmpeg5: FFmpeg: Arbitrary code execution via crafted H.264/HEVC RTP stream [epel-all]
Summary: CVE-2026-30754 ffmpeg5: FFmpeg: Arbitrary code execution via crafted H.264/HE...
Keywords:
Status: NEW
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: ffmpeg5
Version: epel10
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Troy Dawson
QA Contact:
URL:
Whiteboard: {"flaws": ["cf758d77-e815-418a-b550-f...
Depends On:
Blocks: CVE-2026-30754
TreeView+ depends on / blocked
 
Reported: 2026-10-02 13:52 UTC by aedmond
Modified: 2026-10-02 13:52 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description aedmond 2026-10-02 13:52:45 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A memory corruption vulnerability exists in FFmpeg before 8.1. The RTP encoding process. In the nal_send function in libavformat/rtpenc_h264_hevc.c, a negative size parameter (size=-3) is passed to memcpy when transmitting H.264/HEVC streams via RTP using a crafted input file. This was detected using AddressSanitizer.
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