Out-of-bounds Read Affecting python3-pillow package, versions <0:5.1.1-23.el8_10


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.52% (43rd percentile)

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  • Snyk IDSNYK-ROCKY8-PYTHON3PILLOW-18493143
  • published1 Aug 2026
  • disclosed14 Jul 2026

Introduced: 14 Jul 2026

CVE-2026-54058  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 python3-pillow to version 0:5.1.1-23.el8_10 or higher.
This issue was patched in RLSA-2026:48021.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-pillow package and not the python3-pillow package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

Pillow is a Python imaging library. Prior to 12.3.0, when Pillow loads an uncompressed McIdas AREA image from a filename through the mmap raw codec path, attacker-controlled header words can set a row stride smaller than the natural row width, causing pixel access such as Image.tobytes(), getpixel, convert, or save to read beyond the mapped region and disclose adjacent process memory or fault. This issue is fixed in version 12.3.0.

CVSS Base Scores

version 3.1