# CVE-2023-39180: linux: A flaw was found within the handling of SMB2_READ commands in the kernel ksmbd module

CVE-2023-39180 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-39180, released November 18, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-39180
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0144
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 18, 2024

## Description

A flaw was found within the handling of SMB2_READ commands in the kernel ksmbd module. The issue results from not releasing memory after its effective lifetime. An attacker can leverage this to create a denial-of-service condition on affected installations of Linux. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.55-1 | [DEBIAN-CVE-2023-39180](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39180.md) | Nov 18, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.5.3-1 | [DEBIAN-CVE-2023-39180](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39180.md) | Nov 18, 2024 |
| Linux | linux Debian 14 | 6.5.3-1 | [DEBIAN-CVE-2023-39180](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39180.md) | Nov 18, 2024 |

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Data as of 2026-11-09T01:18:40Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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