Bug 2497464 (CVE-2026-54059) - CVE-2026-54059 python-pillow: Pillow: Denial of Service via crafted PCF font data
Summary: CVE-2026-54059 python-pillow: Pillow: Denial of Service via crafted PCF font ...
Keywords:
Status: NEW
Alias: CVE-2026-54059
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
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Depends On: 2497682 2497683
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-06 20:02 UTC by OSIDB Bzimport
Modified: 2026-07-07 12:21 UTC (History)
21 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-07-06 20:02:44 UTC 
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.
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