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CVE-2026-112062

CVE-2026-112062 · lwIP through 2.2.1 Stack Out-of-Bounds Write via mDNS Search Response Handler

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

lwIP through 2.2.1 contains a stack out-of-bounds write vulnerability in mdns_handle_response that allows adjacent attackers to corrupt stack memory by sending mDNS responses with invalid domain names. Attackers on the local link can send multicast PTR answers with oversized RDLENGTH or SRV answers with RDLENGTH below 6 during a service search, overflowing a 256-byte stack buffer and crashing the device.

CVSS 6.0 · Medium · EPSS 0.2%

Published
Updated

Stack: system

Affected products and versions

  • lwip

    Versions
    • ≥ 0, ≤ 2.2.1: Affected (custom)

    No fix published

  • lwip Debian:12

    Versions
    • 2.1.3+dfsg1-2
    • 2.1.3+dfsg1-3
    • 2.1.3+dfsg1-4
    • 2.2.0+dfsg1-1
    • 2.2.0+dfsg1-2
    • 2.2.0+dfsg1-3
    • 2.2.0+dfsg1-4
    • 2.2.0+dfsg1-5
    • 2.2.0+dfsg1-6
    • 2.2.0+dfsg1-6.1
    • 2.2.0+dfsg1-6.1~exp1
    • 2.2.0+dfsg1-7
    • 2.2.0+dfsg1-8
    • 2.2.0+dfsg1-9
    • 2.2.1+dfsg1-1
    • 2.2.1+dfsg1-2
    • 2.2.1+dfsg1-3
    • 2.2.1+dfsg1-4
    • 2.2.1+dfsg1-5
    • 2.2.1+dfsg1-6
    • 2.2.1+dfsg1-7
    • 2.2.1+dfsg1-8
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lwip Debian:13

    Versions
    • 2.2.1+dfsg1-1
    • 2.2.1+dfsg1-1+deb13u1
    • 2.2.1+dfsg1-2
    • 2.2.1+dfsg1-3
    • 2.2.1+dfsg1-4
    • 2.2.1+dfsg1-5
    • 2.2.1+dfsg1-6
    • 2.2.1+dfsg1-7
    • 2.2.1+dfsg1-8
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lwip Debian:14

    Versions
    • 2.2.1+dfsg1-1
    • 2.2.1+dfsg1-2
    • 2.2.1+dfsg1-3
    • 2.2.1+dfsg1-4
    • 2.2.1+dfsg1-5
    • 2.2.1+dfsg1-6
    • 2.2.1+dfsg1-7
    • 2.2.1+dfsg1-8
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lwip Ubuntu:Pro:20.04:LTS

    Versions
    • 2.1.2-3
    • 2.1.2-5.1
    • 2.1.2+dfsg1-1
    • 2.1.2+dfsg1-4
    • 2.1.2+dfsg1-4ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lwip Ubuntu:Pro:22.04:LTS

    Versions
    • 2.1.2+dfsg1-8
    • 2.1.2+dfsg1-9
    • 2.1.3+dfsg1-1
    • 2.1.3+dfsg1-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lwip Ubuntu:Pro:24.04:LTS

    Versions
    • 2.1.3+dfsg1-2
    • 2.1.3+dfsg1-4
    • 2.2.0+dfsg1-2
    • 2.2.0+dfsg1-3
    • 2.2.0+dfsg1-4
    • 2.2.0+dfsg1-5
    • 2.2.0+dfsg1-6
    • 2.2.0+dfsg1-6.1
    • 2.2.0+dfsg1-6.1build1
    • 2.2.0+dfsg1-6.1build2
    • 2.2.0+dfsg1-6.1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lwip Ubuntu:26.10

    Versions
    • 2.2.1+dfsg1-4
    • 2.2.1+dfsg1-5
    • 2.2.1+dfsg1-7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lwip Ubuntu:Pro:26.04:LTS

    Versions
    • 2.2.1+dfsg1-2
    • 2.2.1+dfsg1-3
    • 2.2.1+dfsg1-4
    • 2.2.1+dfsg1-4ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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