p PatchFirst

CVE-2026-81886

CVE-2026-81886 · radare2: Uncontrolled memory allocation in radare2 dmp64 parser

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

radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Windows 64-bit crash-dump dmp64 parser was vulnerable because the Windows dmp64 parser used an input-controlled physical-memory-run PageCount directly as the bound of a per-page allocation loop. The vulnerability is triggered by opening a small crafted full-memory Windows crash dump. The parser repeatedly allocated and appended page descriptors without validating the count against the dump size. This can cause denial of service through excessive memory consumption and processing time. This issue is fixed in version 6.2.0.

CVSS 5.5 · Medium · EPSS 0.2%

Published
Updated

Stack: system

Affected products and versions

  • radare2

    Versions
    • < 6.2.0: Affected

    No fix published

  • radare2 Ubuntu:16.04:LTS

    Versions
    • 0.9.6-3.1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • radare2 Ubuntu:Pro:18.04:LTS

    Versions
    • 1.6.0+dfsg-1
    • 2.0.0+dfsg-1
    • 2.1.0+dfsg-1
    • 2.3.0+dfsg-1
    • 2.3.0+dfsg-2
    • 2.3.0+dfsg-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • radare2 Ubuntu:Pro:20.04:LTS

    Versions
    • 3.2.1+dfsg-5build1
    • 4.0.0+dfsg-1
    • 4.2.1+dfsg-1
    • 4.2.1+dfsg-2
    • 4.2.1+dfsg-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • radare2 Ubuntu:Pro:24.04:LTS

    Versions
    • 5.5.0+dfsg-1ubuntu1
    • 5.5.0+dfsg-1.1ubuntu2
    • 5.5.0+dfsg-1.1ubuntu3
    • 5.5.0+dfsg-1.1ubuntu3+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • radare2 Ubuntu:26.10

    Versions
    • 6.0.7+ds-1
    • 6.1.6+ds-2
    • 6.1.6+ds-3
    • 6.1.8+ds-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • radare2 Ubuntu:26.04:LTS

    Versions
    • 5.9.8+dfsg-2
    • 6.0.4+dfsg-1
    • 6.0.7+ds-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →