Pillow tiled-TIFF decoder reads past tile buffer in copy4 (Unpack.c:1290)

影響: pip:pillow >= 8.2.0, < 13.0.0 → 13.0.0

Pillow's libImaging _decodeTile decoder, used to decode tiled TIFF images, allocates a per-tile buffer using realloc(state->buffer, TIFFTileSize(tiff)). After each TIFFReadTile it then iterates tile_y from 0 up to current_tile_length and calls the configured row unpacker (here copy4) with the source pointer state->buffer + tile_y row_byte_size. When libtiff returns a tile_bytes_size smaller than the worst-case row_byte_size tile_length, the inner stride-and-copy loop walks past the real…

GitHub Advisory Database에서 읽기

2026. 10. 21. 오전 05:49, GitHub Advisory Database에서 "Pillow tiled-TIFF decoder reads past tile buffer in copy4 (Unpack.c:1290)"을(를) 게시했습니다 (유형: 취약점 권고). 심각도는 "보통"(medium)입니다. 관련 기술: Python. CVE: CVE-2026-112395.