CVE-2026-46288
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.
Affected versions
Linux kernel versions
6.12
and later are affected. Fixed in
6.12.86,
6.18.27,
7.0.4,
7.1-rc1
and their respective stable series.
References
The following references provide additional information about CVE-2026-46288 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/37318d1a27c9cc5a70d3cd7e49e30ec86f2b8ca1
-
PatchKernel patch commithttps://git.kernel.org/stable/c/6fdad20b7975bdc32e85b45f8f7c640f6687b81f
-
PatchKernel patch commithttps://git.kernel.org/stable/c/7f0f0926f3010b10cff5e93446258f971e42f2fd
Frequently asked questions
-
What is CVE-2026-46288?
CVE-2026-46288 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.86, 6.18.27, 7.0.4 and others. CVE-2026-46288 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-46288?
Yes — CVE-2026-46288 has been patched. Fixed versions include 6.12.86, 6.18.27, 7.0.4 and others. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-46288 actively exploited?
No — CVE-2026-46288 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.