GHSA-8V84-F9PQ-WR9X Pillow `PcfFontFile._load_bitmaps()`: `Image.frombytes()` called without `_decompression_bomb_check()` — bomb protection bypass via PCF font loading

Description PIL/PcfFontFile.py loadbitmaps line 227 reads glyph dimensions from the PCF METRICS section and passes them directly to Image.frombytes without calling Image.decompressionbombcheck. Dimensions originate from unsigned 16-bit values: xsize = right - left max: 65535 − 0 = 65535 ysize =...