Vulnerability in FFmpeg

[ Description ]Official description

FFmpeg through 9.0.2 contains a stack exhaustion vulnerability in av_encryption_init_info_free() in libavutil/encryption_info.c, which recursively frees AVEncryptionInitInfo linked lists built by the MOV demuxer's mov_read_pssh(). Attackers can supply a crafted MP4 file with tens of thousands of small pssh boxes to exhaust the stack and crash the process, while also causing quadratic CPU consumption.

[ Fixes ]Fixes and patches

• 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/pulls/24593Issue TrackingPatch
• ffmpeg.orgProduct
• github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/mov.cProduct
• github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/encryption_info.cProduct
• www.vulncheck.com/advisories/ffmpeg-through-9.0.2-stack-exhaustion-via-recursive-free-o…Third Party Advisory