# CVE-2024-50285: ksmbd: check outstanding simultaneous SMB operations

CVE-2024-50285 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-50285, released November 19, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-50285
- Priority: Routine
- CVSS: 5.5 (Moderate)
- EPSS: 0.0062
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 19, 2024
- Weakness: Allocation of Resources Without Limits or Throttling
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-50285

## Description

In the Linux kernel, the following vulnerability has been resolved:  ksmbd: check outstanding simultaneous SMB operations  If Client send simultaneous SMB operations to ksmbd, It exhausts too much memory through the "ksmbd_work_cache”. It will cause OOM issue. ksmbd has a credit mechanism but it can't handle this problem. This patch add the check if it exceeds max credits to prevent this problem by assuming that one smb request consumes at least one credit.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.11.9-1 | [DEBIAN-CVE-2024-50285](https://patchblox.com/security/data/fix/linux/debian-cve-2024-50285.md) | Nov 19, 2024 |
| Linux | linux Debian 14 | 6.11.9-1 | [DEBIAN-CVE-2024-50285](https://patchblox.com/security/data/fix/linux/debian-cve-2024-50285.md) | Nov 19, 2024 |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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