SECUFOCUSNOW
Home›CVE index›CVE-2026-46288
Review reviewHigh

CVE-2026-46288

Linux Linux, linux kernel

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 t...

CVSS
8.4
EPSS
0.14%
3.77% percentile
CISA KEV
Not listed
Published
2026.06.09
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.14%
Technical severityCVSS 8.4

Vulnerability overview

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 t...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 1c668ea65506e67ce2eae07b69bb09fcdd86e309 < 37318d1a27c9cc5a70d3cd7e49e30ec86f2b8ca1, >= 1c668ea65506e67ce2eae07b69bb09fcdd86e309 < 7f0f0926f3010b10cff5e93446258f971e42f2fd, >= 1c668ea65506e67ce2eae07b69bb09fcdd86e309 < 6fdad20b7975bdc32e85b45f8f7c640f6687b81f, >= 1c668ea65506e67ce2eae07b69bb09fcdd86e309 < faecdd423c27f0d6090156a435ba9dbbac0eaddb, >= 6.12, >= 6.12 < 6.12.86, >= 6.13 < 6.18.27, >= 6.19 < 7.0.4
Fixed versions
6.12.86, 6.18.27, 7.0.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2026-46288 — Linux Linux, linux kernel | SECUFOCUS NOW