Pillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image._decompression_bomb_check(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade python3-pillow-develUpgrade python3-pillow-tkUpgrade python3-pillowUpgrade python3-pillow-doc | Jul 14, 2026 | Jul 14, 2026 |
| Amazon Linux Ami 2 | — | Upgrade python-pillowUpgrade python-pillow-docUpgrade python-pillow-tkUpgrade python-pillow-develUpgrade python-pillow-saneUpgrade python-pillow-debuginfo | Jul 22, 2026 | Jul 22, 2026 |
| Amazon_linux_2023 | — | Upgrade python3-pillow-tk-debuginfoUpgrade python-pillow-debuginfoUpgrade python3-pillow-debuginfoUpgrade python3-pillow-develUpgrade python3-pillow-tkUpgrade python-pillow-debugsourceUpgrade python3-pillow | Jul 21, 2026 | Jul 6, 2026 |
| Redhat_linux | — | Upgrade python3-pillow-develUpgrade python-pillow-debuginfoUpgrade python-pillow-debugsourceUpgrade python3-pillowUpgrade python3-pillow-docUpgrade python3-pillow-tkUpgrade python3-pillow-tk-debuginfoUpgrade python3-pillow-debuginfo | Jul 15, 2026 | Jul 6, 2026 |
| Rocky_linux | — | Upgrade python3-pillowUpgrade python3-pillow-tk-debuginfoUpgrade python-pillow-debugsourceUpgrade python-pillow-debuginfoUpgrade python3-pillow-develUpgrade python3-pillow-debuginfoUpgrade python3-pillow-tk | Jul 17, 2026 | Jul 15, 2026 |
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