Memory leak in Linux kernel - CVE-2023-32255
Published: August 6, 2025
Vulnerability identifier: #VU113699
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-32255
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak within the smb2_sess_setup() function in fs/ksmbd/smb2pdu.c of the ksmbd component. A remote attacker can send a session setup request with unknown NTLMSSP message type and perform a denial of service (DoS) attack.
How to mitigate CVE-2023-32255
Install updates from vendor's website.