# CVE-2023-4134: Kernel: cyttsp4_core: use-after-free in cyttsp4_watchdog_work()

CVE-2023-4134 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-4134, released November 14, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-4134
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 14, 2024
- Weakness: Use After Free
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-4134

## Description

A use-after-free vulnerability was found in the cyttsp4_core driver in the Linux kernel. This issue occurs in the device cleanup routine due to a possible rearming of the watchdog_timer from the workqueue. This could allow a local user to crash the system, causing a denial of service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.4.4-1 | [DEBIAN-CVE-2023-4134](https://patchblox.com/security/data/fix/linux/debian-cve-2023-4134.md) | Nov 14, 2024 |
| Linux | linux Debian 14 | 6.4.4-1 | [DEBIAN-CVE-2023-4134](https://patchblox.com/security/data/fix/linux/debian-cve-2023-4134.md) | Nov 14, 2024 |

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