CVE-2023-32256

HIGH
Published Aug 1, 2025 Modified Apr 15, 2026 CWE-421

Description

A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.

CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:H

Weakness Type (CWE)

CWE-421 CWE-421

References

Frequently Asked Questions

What is CVE-2023-32256? +
A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2023-32256? +
CVE-2023-32256 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
How do I check if I'm vulnerable to CVE-2023-32256? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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