CVE-2026-64832

Summary

FFmpeg versions 4.4 through 8.1.2 contain a double-free vulnerability in the NVIDIA NVDEC hardware decoder within libavcodec/nvdec.c that allows attackers to trigger memory corruption by supplying a crafted video file. When no decoder surfaces remain, the ff_nvdec_start_frame_sep_ref error path frees memory via nvdec_fdd_priv_free while the calling layer subsequently frees the same frame description data, resulting in a double-free of the underlying decoder context in any FFmpeg-based application using NVDEC hardware-accelerated decoding.

Affected Software

Weaknesses

• CWE-415: Double Free

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23664
• https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/4c6217477fc64305055b37d9d1d0d76d30e37f97
• https://www.vulncheck.com/advisories/ffmpeg-double-free-in-nvdec-hardware-decoder-via-nvdec-c

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