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CVE-2025-67873

CVE-2025-67873 · Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 4.8 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • capstone

    Versions
    • <= 6.0.0-Alpha5: Affected

    No fix published

  • capstone Debian:12

    Versions
    • 4.0.2-5
    • 4.0.2-5.1
    • 5.0-1~exp1
    • 5.0.1-1~exp1
    • 5.0.3-1
    • 5.0.5-1
    • 5.0.6-1
    • 5.0.7-1
    • 5.0.7-1~deb13u1
    • 5.0.7-2
    • 5.0.9-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • capstone Debian:13

    Versions
    • 5.0.6-1
    Affected ranges
    • ECOSYSTEM: < 5.0.7-1~deb13u1

    Update to 5.0.7-1~deb13u1

  • capstone Debian:14

    Versions
    • 5.0.6-1
    • 5.0.7-1~deb13u1
    Affected ranges
    • ECOSYSTEM: < 5.0.7-1

    Update to 5.0.7-1

  • capstone Ubuntu:16.04:LTS

    Versions
    • 3.0.4-0.1
    • 3.0.4-0.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • capstone Ubuntu:18.04:LTS

    Versions
    • 3.0.4-3
    • 3.0.4-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • capstone Ubuntu:20.04:LTS

    Versions
    • 4.0.1+really+3.0.5-1
    • 4.0.1+really+3.0.5-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • capstone Ubuntu:22.04:LTS

    Versions
    • 4.0.2-3
    • 4.0.2-3build1
    • 4.0.2-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • capstone Ubuntu:24.04:LTS

    Versions
    • 4.0.2-5
    • 4.0.2-5ubuntu1
    • 4.0.2-5.1
    • 4.0.2-5.1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • capstone Ubuntu:25.10

    Versions
    • 5.0.5-1
    • 5.0.6-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • capstone Ubuntu:26.10

    Versions
    • 5.0.7-2
    • 5.0.9-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • capstone Ubuntu:26.04:LTS

    Versions
    • 5.0.6-1
    • 5.0.6-1build1
    • 5.0.7-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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