FFmpeg: Heap buffer overflow in vdpau_hevc_start_frame (CVE-2026-125219)
FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in vdpau_hevc_start_frame() within libavcodec/vdpau_hevc.c.
CVE search metadata
CVE search record: CVE-2026-125219. Severity: high. CVSS: 7.0. KEV: no. Product: FFmpeg (<= 9.0.2). Brief: FFmpeg: Heap buffer overflow in vdpau_hevc_start_frame (CVE-2026-125219). Brief link: https://feed.craftedsignal.io/briefs/2026-11-ffmpeg-buffer-overflow-3150fe62/
Triage facts
Revision 1- Applicability
- FFmpeg (<= 9.0.2)
- Evidence
- Unknown
- Severity
- Medium
- Sources
- 1 public source
- Freshness
- Revision 1Nov 9, 19:55 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- A2Roughly even chance
FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in vdpau_hevc_start_frame() in libavcodec/vdpau_hevc.c that copies unbounded PPS tile counts into fixed-size VDPAU arrays. Attackers can supply crafted HEVC bitstreams with excessive tile columns or rows to write controlled 16-bit values past heap-allocated hwaccel data, corrupting memory in applications using VDPAU decoding.