# CVE-2023-32255: linux: A flaw was found in the Linux kernel's ksmbd component

CVE-2023-32255 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-32255, released August 2, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-32255
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0055
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 2, 2025

## Description

A flaw was found in the Linux kernel's ksmbd component. A memory leak can occur if a client sends a session setup request with an unknown NTLMSSP message type,  potentially leading to resource exhaustion.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-32255](https://patchblox.com/security/data/fix/linux/debian-cve-2023-32255.md) | Aug 2, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-32255](https://patchblox.com/security/data/fix/linux/debian-cve-2023-32255.md) | Aug 2, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-32255](https://patchblox.com/security/data/fix/linux/debian-cve-2023-32255.md) | Aug 2, 2025 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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