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CVE-2026-110712

CVE-2026-110712 · libsmb2 through 6.2 Heap Out-of-Bounds Read via smb2_decode_file_all_info

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_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on unsigned sessions can return crafted FileAllInformation replies to smb2_stat or smb2_fstat calls, crashing the client.

CVSS 7.1 · High · EPSS 0.4%

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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