# CVE-2026-53117: linux: In the Linux kernel, the following vulnerability has been resolved:  s390/cio: use generic driver_override infrastruc...

CVE-2026-53117 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-53117, released June 25, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-53117
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 24, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  s390/cio: use generic driver_override infrastructure  When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF.  Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally.  Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.94-1 | [DEBIAN-CVE-2026-53117](https://patchblox.com/security/data/fix/linux/debian-cve-2026-53117.md) | Jun 25, 2026 |
| Linux | linux Debian 14 | 7.0.10-1 | [DEBIAN-CVE-2026-53117](https://patchblox.com/security/data/fix/linux/debian-cve-2026-53117.md) | Jun 25, 2026 |

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Data as of 2026-11-08T19:12:23Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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