MEDIUM 6.8 NVD
CVE-2026-125254
FFmpeg through 9.0.2 contains a division by zero vulnerability in the VVC decoder because ff_vvc_slice_rpl() fails to validate num_ref_idx_active against built
FFmpeg through 9.0.2 contains a division by zero vulnerability in the VVC decoder because ff_vvc_slice_rpl() fails to validate num_ref_idx_active against built reference list entries. Attackers can supply a crafted VVC bitstream whose excess reference indices yield a zero POC difference in ff_vvc_mv_scale(), crashing the decoding process.
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25572
- https://github.com/FFmpeg/FFmpeg
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/vvc/mvs.c#L77
- https://github.com/FFmpeg/FFmpeg/commit/8732d7585cd8ab9d1dd9baeb4db5e93466c0efa7
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-division-by-zero-via-vvc-ff-vvc-
This medium severity vulnerability with a CVSS score of 6.8 was published on 2026-11-09 via NVD.
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