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CVE-2026-110713

CVE-2026-110713 · libsmb2 through 6.2 Heap Out-of-Bounds Read via File System Info Decoders

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

libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_fs_volume_info and smb2_decode_file_fs_attribute_info that allows malicious SMB servers to read past reply buffers. Attackers controlling a server or intercepting unsigned sessions can send crafted QUERY_INFO replies with missing or oversized name lengths to crash the client.

CVSS 7.1 · High · EPSS 0.5%

Published
Updated

Stack: system

Affected products and versions

  • libsmb2

    Versions
    • ≥ 0, ≤ 6.2: Affected (custom)

    No fix published

  • libsmb2 Debian:13

    Versions
    • 6.2+dfsg-2
    • 6.2+dfsg-2+deb13u1
    • 6.2+dfsg-3
    • 6.2+dfsg-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmb2 Debian:14

    Versions
    • 6.2+dfsg-2
    • 6.2+dfsg-3
    • 6.2+dfsg-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmb2 Ubuntu:26.10

    Versions
    • 6.2+dfsg-3
    • 6.2+dfsg-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmb2 Ubuntu:26.04:LTS

    Versions
    • 6.2+dfsg-2
    • 6.2+dfsg-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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