Out-of-bounds Write Affecting python2-capstone package, versions <0:3.0.5-1.amzn2.0.2


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.2% (11th percentile)

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  • Snyk IDSNYK-AMZN2-PYTHON2CAPSTONE-17286809
  • published10 Jun 2026
  • disclosed17 Dec 2025

Introduced: 17 Dec 2025

CVE-2025-68114  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 python2-capstone to version 0:3.0.5-1.amzn2.0.2 or higher.
This issue was patched in ALAS2-2026-3351.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python2-capstone package and not the python2-capstone package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, an unchecked vsnprintf return in SStream_concat lets a malicious cs_opt_mem.vsnprintf drive SStream’s index negative or past the end, leading to a stack buffer underflow/overflow when the next write occurs. Commit 2c7797182a1618be12017d7d41e0b6581d5d529e fixes the issue.

CVSS Base Scores

version 3.1