p PatchFirst

CVE-2026-111137

CVE-2026-111137 · libsmi through 0.5.0 Out-of-Bounds Write via smiValueAsString OCTET STRING DEFVAL

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

libsmi through 0.5.0 contains an out-of-bounds write vulnerability in smiValueAsString() in lib/smi.c that allows attackers to overflow a fixed 1024-byte static buffer through hex rendering of OCTET STRING values. Attackers can supply a crafted MIB with an OCTET STRING DEFVAL of 512 or more octets and a leading 0x00 byte to corrupt adjacent library globals and crash smidump or other consumers.

CVSS 6.9 · Medium · EPSS 0.1%

Published
Updated

Stack: system

Affected products and versions

  • libsmi

    Versions
    • ≥ 0, ≤ 0.5.0: Affected (custom)

    No fix published

  • libsmi Debian:12

    Versions
    • 0.4.8+dfsg2-16
    • 0.4.8+dfsg2-16.1
    • 0.4.8+dfsg2-16.1~exp1
    • 0.4.8+dfsg2-17
    • 0.4.8+dfsg2-18
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmi Debian:13

    Versions
    • 0.4.8+dfsg2-17
    • 0.4.8+dfsg2-18
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmi Debian:14

    Versions
    • 0.4.8+dfsg2-17
    • 0.4.8+dfsg2-18
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmi Ubuntu:16.04:LTS

    Versions
    • 0.4.8+dfsg2-9ubuntu3
    • 0.4.8+dfsg2-11
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmi Ubuntu:18.04:LTS

    Versions
    • 0.4.8+dfsg2-15
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmi Ubuntu:20.04:LTS

    Versions
    • 0.4.8+dfsg2-16
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmi Ubuntu:22.04:LTS

    Versions
    • 0.4.8+dfsg2-16
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmi Ubuntu:24.04:LTS

    Versions
    • 0.4.8+dfsg2-16
    • 0.4.8+dfsg2-16.1
    • 0.4.8+dfsg2-16.1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmi Ubuntu:26.10

    Versions
    • 0.4.8+dfsg2-18
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmi Ubuntu:26.04:LTS

    Versions
    • 0.4.8+dfsg2-17
    • 0.4.8+dfsg2-18
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →