Bug 2530145 (CVE-2026-30754)

Summary: CVE-2026-30754 ffmpeg: FFmpeg: Arbitrary code execution via crafted H.264/HEVC RTP stream
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: bbrownin
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in FFmpeg. This memory corruption vulnerability occurs during the Real-time Transport Protocol (RTP) encoding of H.264/HEVC streams. A remote attacker could exploit this by providing a specially crafted input file, leading to a negative size parameter being passed to a memory copy operation. This could result in arbitrary code execution or a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2545187, 2545188, 2545189, 2545191, 2545192, 2545193    
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Description OSIDB Bzimport 2026-09-08 20:41:26 UTC
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.