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CVE-2026-65705

FFmpeg 3.4 - 8.1.2 vf_floodfill Out-of-Bounds Write via filter_frame() PUBLISHED

Description (CNA)

FFmpeg versions 3.4 through 8.1.2 contain an out-of-bounds write vulnerability in the vf_floodfill video filter that allows attackers to corrupt heap memory by supplying a dynamically sized video stream with filtergraph reinitialization disabled via -reinit_filter 0. When config_input() allocates the points traversal stack based on initial frame dimensions and a subsequent larger frame is processed, filter_frame() performs flood-fill neighbor pushes beyond the original allocation boundary, resulting in heap corruption and process crash with potential for code execution depending on heap layout and process hardening.

Affected (CNA)

Vendor / productVersions
FFmpeg / FFmpegaffected 3.4 through 8.1.2; unaffected f186c50cf53aec20e9a29059cb22ca3f2d59201c

CWE

CWE-787, CWE-131

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.