# CVE-2026-64238: linux: In the Linux kernel, the following vulnerability has been resolved:  gpio: shared: fix deadlock on shared proxy's par...

CVE-2026-64238 is fixed in linux on 1 platform by DEBIAN-CVE-2026-64238 (version 7.0.12-1), released July 25, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-64238
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0011
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 24, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  gpio: shared: fix deadlock on shared proxy's parent removal  Commit 710abda58055 ("gpio: shared: call gpio_chip::of_xlate() if set") used the mutex embedded in struct gpio_shared_entry to protect the offset field which now can be modified after assignment. The critical section however is too wide and introduced a potential deadlock on the removal of the shared GPIO proxy's parent.  Make the critical section shorter - only protect the offset when it's being read.  While at it: mention the fact that the entry lock is now also used to protect against concurrent access to the offset field in the structure's documentation.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.0.12-1 | [DEBIAN-CVE-2026-64238](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64238.md) | Jul 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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