CVEvulnerability

CVE-2023-3866

5.5 MEDIUM Published 2025-08-16 Modified 2026-08-04 Official page ↗
Status
Modified
Published
2025-08-16
Last modified
2026-08-04
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate session id and tree id in the compound request This patch validate session id and tree id in compound request. If first operation in the compound is SMB2 ECHO request, ksmbd bypass session and tree validation. So work->sess and work->tcon could be NULL. If secound request in the compound access work->sess or tcon, It cause NULL pointer dereferecing error.

Affected configurations

• linux linux kernel (>= 5.15 < 5.15.121) • linux linux kernel (>= 5.16 < 6.1.36) • linux linux kernel (>= 6.2 < 6.3.10) • linux linux kernel 6.4

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References