Heap-based Buffer Overflow Affecting nemo-skills package, versions <0.7.0_git20260911-r5


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
1.02% (64th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-NEMOSKILLS-21723585
  • published27 Oct 2026
  • disclosed19 Oct 2026

Introduced: 19 Oct 2026

NewCVE-2026-112393  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Chainguard nemo-skills to version 0.7.0_git20260911-r5 or higher.

NVD Description

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

Pillow is a Python imaging library. From 2.0.0 until 13.0.0, Pillow has a heap buffer overflow and stale-heap disclosure in _tiffWriteProc when saving compressed TIFF data through libtiff to a target without a usable fileno(), such as BytesIO. The callback sizes its allocation from the prior buffer size instead of the current write position, allowing an attacker-controlled out-of-line TIFF tag or retained ICC profile to be copied beyond the allocation after libtiff seeks forward. This overflow can crash the process and may allow code execution. Independently, unwritten alignment gaps in compressed TIFF output larger than 64 KiB can disclose stale heap bytes without a crafted tag. File paths and targets with real file descriptors are unaffected. This issue is fixed in version 13.0.0.

CVSS Base Scores

version 3.1