Use of Uninitialized Resource Affecting python-pillow package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.29% (21st percentile)

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  • Snyk IDSNYK-RHEL10-PYTHONPILLOW-21266331
  • published20 Oct 2026
  • disclosed19 Oct 2026

Introduced: 19 Oct 2026

NewCVE-2026-112898  (opens in a new tab)
CWE-908  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 python-pillow.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-pillow package and not the python-pillow package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Pillow is a Python imaging library. From 9.1.0 until 13.0.0, Pillow can disclose uninitialized stack memory when Image.quantize() uses an empty palette. ImagingPaletteCacheUpdate() leaves a local cache array uninitialized when the palette has zero entries, and the conversion path emits those bytes as output pixel indices. An attacker who controls the palette image can obtain stack contents from a returned PNG or GIF. This can disclose addresses and stack-canary data without an out-of-bounds access, memory corruption, or process crash. This issue is fixed in version 13.0.0.

CVSS Base Scores

version 3.1