CVE-2023-32251

linux: A vulnerability has been identified in the Linux kernel's ksmbd component (kernel SMB/CIFS server)

CVE-2023-32251 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-32251, released July 31, 2025. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
3.7
low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0049
42nd percentile

A vulnerability has been identified in the Linux kernel's ksmbd component (kernel SMB/CIFS server). A security control designed to prevent dictionary attacks, which introduces a 5-second delay during session setup, can be bypassed through the use of asynchronous requests. This bypass negates the intended anti-brute-force protection, potentially allowing attackers to conduct dictionary attacks more efficiently against user credentials or other authentication mechanisms.

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 12.15 (bookworm) 6.1.37-1 DEBIAN-CVE-2023-32251 Jul 31, 2025
linux · Debian 13.5 (trixie) 6.3.7-1 DEBIAN-CVE-2023-32251 Jul 31, 2025
linux · Debian 14 6.3.7-1 DEBIAN-CVE-2023-32251 Jul 31, 2025

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