# CVE-2025-68246: linux: In the Linux kernel, the following vulnerability has been resolved:  ksmbd: close accepted socket when per-IP limit r...

CVE-2025-68246 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-68246, released December 16, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-68246
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0041
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 16, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  ksmbd: close accepted socket when per-IP limit rejects connection  When the per-IP connection limit is exceeded in ksmbd_kthread_fn(), the code sets ret = -EAGAIN and continues the accept loop without closing the just-accepted socket. That leaks one socket per rejected attempt from a single IP and enables a trivial remote DoS.  Release client_sk before continuing.  This bug was found with ZeroPath.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.159-1 | [DEBIAN-CVE-2025-68246](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68246.md) | Dec 16, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.12.63-1 | [DEBIAN-CVE-2025-68246](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68246.md) | Dec 16, 2025 |
| Linux | linux Debian 14 | 6.17.9-1 | [DEBIAN-CVE-2025-68246](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68246.md) | Dec 16, 2025 |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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