# CVE-2023-32246: linux: In the Linux kernel, the following vulnerability has been resolved:  ksmbd: call rcu_barrier() in ksmbd_server_exit()...

CVE-2023-32246 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-32246, released August 16, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-32246
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 16, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  ksmbd: call rcu_barrier() in ksmbd_server_exit()  racy issue is triggered the bug by racing between closing a connection and rmmod. In ksmbd, rcu_barrier() is not called at module unload time, so nothing prevents ksmbd from getting unloaded while it still has RCU callbacks pending. It leads to trigger unintended execution of kernel code locally and use to defeat protections such as Kernel Lockdown

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-32246](https://patchblox.com/security/data/fix/linux/debian-cve-2023-32246.md) | Aug 16, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-32246](https://patchblox.com/security/data/fix/linux/debian-cve-2023-32246.md) | Aug 16, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-32246](https://patchblox.com/security/data/fix/linux/debian-cve-2023-32246.md) | Aug 16, 2025 |

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