# CVE-2023-53459: linux: In the Linux kernel, the following vulnerability has been resolved:  HID: mcp-2221: prevent UAF in delayed work  If t...

CVE-2023-53459 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53459, released October 1, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-53459
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 1, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  HID: mcp-2221: prevent UAF in delayed work  If the device is plugged/unplugged without giving time for mcp_init_work() to complete, we might kick in the devm free code path and thus have unavailable struct mcp_2221 while in delayed work.  Canceling the delayed_work item is enough to solve the issue, because cancel_delayed_work_sync will prevent the work item to requeue itself.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-53459](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53459.md) | Oct 1, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-53459](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53459.md) | Oct 1, 2025 |

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Data as of 2026-11-09T07:25:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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