# CVE-2023-32248: linux: A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server

CVE-2023-32248 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-32248, released July 24, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-32248
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0406
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 24, 2023

## Description

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-32248](https://patchblox.com/security/data/fix/linux/debian-cve-2023-32248.md) | Jul 24, 2023 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-32248](https://patchblox.com/security/data/fix/linux/debian-cve-2023-32248.md) | Jul 24, 2023 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-32248](https://patchblox.com/security/data/fix/linux/debian-cve-2023-32248.md) | Jul 24, 2023 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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