Pillow: Heap buffer overflow in ImagingJpegDecode

影響: pip:Pillow <= 12.3.0 → 13.0.0

JpegImageFile.draft() — which Image.thumbnail() calls automatically — requests 1/2, 1/4 or 1/8 scaled JPEG output and shrinks self._size and the tile extents to match, so _setimage() allocates a single-row decode buffer of ceil(W/s) samples. ImagingJpegDecode() sets cinfo.scale_num/scale_denom, calls jpeg_start_decompress(), and then reads scanlines into that buffer without ever comparing cinfo.output_width, cinfo.output_height or cinfo.out_color_components against state->xsize, state->…

GitHub Advisory Database에서 읽기

2026. 10. 21. 오전 05:40, GitHub Advisory Database에서 "Pillow: Heap buffer overflow in ImagingJpegDecode"을(를) 게시했습니다 (유형: 취약점 권고). 심각도는 "긴급"(critical)입니다. 관련 기술: Python. CVE: CVE-2026-112403.