Vulnerability in FFmpeg

[ Description ]Official description

FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in av_dynamic_hdr_plus_to_t35() that leaves up to three payload bytes uninitialized when tone_mapping_flag is 0. Attackers can supply crafted Matroska T.35 BlockAdditional or HEVC/AV1 SEI metadata so that remuxing or transcoding writes leaked process memory into output files.

[ Fixes ]Fixes and patches

• Patch on code.ffmpeg.orgVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
• Patch on code.ffmpeg.orgVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Advisories ]Government CERT advisories

• BSI CERT-Bund8 Oct 2026WID-SEC-2026-3820

  ffmpeg: Multiple vulnerabilities Translated from German

  CVE-2026-107675CVE-2026-107697CVE-2026-107676+6 more CVEs

[ References ]References

• code.ffmpeg.org/FFmpeg/FFmpeg/commit/2c2f6e96e31795ae95a8f8323a493ffbc493111fPatch
• code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24590Issue TrackingPatch
• ffmpeg.orgProduct
• github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/hdr_dynamic_metadata.cProduct
• www.vulncheck.com/advisories/ffmpeg-through-9.0.2-uninitialized-memory-disclosure-via-h…Third Party Advisory