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Medium ALAS2-2026-3133 1 CVE

Moderate: capstone security update (Amazon Linux 2)

Published Feb 5, 2026 · Updated Feb 5, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2025-67873: Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue.

Fixed packages 5

ReleasePackageFixed in
Amazon Linux · 2 capstone 0:3.0.5-1.amzn2.0.1
Amazon Linux · 2 capstone-debuginfo 0:3.0.5-1.amzn2.0.1
Amazon Linux · 2 capstone-devel 0:3.0.5-1.amzn2.0.1
Amazon Linux · 2 capstone-java 0:3.0.5-1.amzn2.0.1
Amazon Linux · 2 python2-capstone 0:3.0.5-1.amzn2.0.1

Vulnerabilities 1

  • Medium 4.8
    CVE-2025-67873

    Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow

    Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow…

    capstone-engine capstone rust capstone Debian Ubuntu Azure Linux Alpine

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2025-67873.html