CVE-2023-1194 HIGH

CVE-2023-1194: Use-after-free in parse_lease_state()

Vendor N/A
Product kernel
Weakness CWE-416
Published November 3, 2023
Last update February 13, 2025

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

What the vulnerability does

01Description

An out-of-bounds (OOB) memory read flaw was found in parse_lease_state in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When an attacker sends the CREATE command with a malformed payload to KSMBD, due to a missing check of `NameOffset` in the `parse_lease_state()` function, the `create_context` object can access invalid memory.

Key dates

02Disclosure timeline

November 3, 2023 CVE published
February 13, 2025 Record updated