# CVE-2026-74272: linux: In the Linux kernel, the following vulnerability has been resolved:  cxl/region: Resolve region deletion races  Sungw...

CVE-2026-74272 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-74272, released August 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-74272
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 15, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  cxl/region: Resolve region deletion races  Sungwoo noticed that the sysfs trigger to delete a region may try to delete a region multiple times. It also has no exclusion relative to the kernel releasing the region via CXL root device teardown.  Instead of installing new cxl root devres actions per region, use the existing root decoder unregistration event to remove all remaining regions. An xarray of regions replaces a devres list of regions.  This handles 3 separate issues with the old approach:  1/ sysfs users racing to delete the same region: no longer possible now    that the regions_lock is held over the lookup and deletion.  2/ multiple actions triggering deletion of the same region: solved by    erasing regions while holding @regions_lock, and only proceeding on    successful erasure.  3/ userspace racing devres_release_all() to trigger the devres not found    warning: solved by sysfs unregistration not requiring a release action

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.115-2 | [DEBIAN-CVE-2026-74272](https://patchblox.com/security/data/fix/linux/debian-cve-2026-74272.md) | Aug 15, 2026 |
| Linux | linux Debian 14 | 7.1.5-1 | [DEBIAN-CVE-2026-74272](https://patchblox.com/security/data/fix/linux/debian-cve-2026-74272.md) | Aug 15, 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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