Bug 2570108 (CVE-2026-125193)

Summary: CVE-2026-125193 ffmpeg: ffmpeg: Denial of Service via out-of-bounds read in bitpacked decoder
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
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Hardware: All   
OS: Linux   
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A flaw was found in FFmpeg. The bitpacked UYVY422 video decoder fails to properly verify the size of incoming packets before processing them. By tricking a user or application into processing crafted media input containing truncated packets, an attacker can trigger an out-of-bounds read. This can cause the application to crash, resulting in a Denial of Service (DoS), or potentially expose adjacent memory data.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-10 19:36:51 UTC
FFmpeg through 9.0.2 contains an out-of-bounds read vulnerability in bitpacked_decode_uyvy422() in libavcodec/bitpacked_dec.c because it never verifies packets hold width * height * 2 bytes. Attackers can supply truncated bitpacked UYVY422 packets via crafted SDP/RFC 4175 RTP sessions or raw input to crash applications or expose adjacent heap memory.