# CVE-2026-46288: linux: In the Linux kernel, the following vulnerability has been resolved:  of: unittest: fix use-after-free in of_unittest_...

CVE-2026-46288 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-46288, released June 24, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-46288
- Priority: High
- CVSS: 8.4 (high)
- EPSS: 0.0014
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 8, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  of: unittest: fix use-after-free in of_unittest_changeset()  The variable 'parent' is assigned the value of 'nchangeset' earlier in the function, meaning both point to the same struct device_node. The call to of_node_put(nchangeset) can decrement the reference count to zero and free the node if there are no other holders. After that, the code still uses 'parent' to check for the presence of a property and to read a string property, leading to a use-after-free.  Fix this by moving the of_node_put() call after the last access to 'parent', avoiding the UAF.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.86-1 | [DEBIAN-CVE-2026-46288](https://patchblox.com/security/data/fix/linux/debian-cve-2026-46288.md) | Jun 24, 2026 |
| Linux | linux Debian 14 | 7.0.4-1 | [DEBIAN-CVE-2026-46288](https://patchblox.com/security/data/fix/linux/debian-cve-2026-46288.md) | Jun 24, 2026 |

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Data as of 2026-11-08T06:59:42Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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