CVE-2026-46292
In the Linux kernel, the following vulnerability has been resolved: pmdomain: core: Fix detach procedure for virtual devices in genpd If a device is attached to a PM domain through genpd_dev_pm_attach_by_id(), genpd calls pm_runtime_enable() for the corresponding virtual device that it registers. While this avoids boilerplate code in drivers, there is no corresponding call to pm_runtime_disable() in genpd_dev_pm_detach(). This means these virtual devices are typically detached from its genpd, while runtime PM remains enabled for them, which is not how things are designed to work. In worst cases it may lead to critical errors, like a NULL pointer dereference bug in genpd_runtime_suspend(), which was recently reported. For another case, we may end up keeping an unnecessary vote for a performance state for the device. To fix these problems, let's add this missing call to pm_runtime_disable() in genpd_dev_pm_detach().
Affected versions
Linux kernel versions
4.18
and later are affected. Fixed in
6.6.141,
6.12.88,
6.18.30,
7.0.7,
7.1-rc3
and their respective stable series.
References
The following references provide additional information about CVE-2026-46292 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/26735dfdd8930d9ef1fa92e590a9bf77726efdf6
-
PatchKernel patch commithttps://git.kernel.org/stable/c/361518a26e4434e879db6ff43bf364795dcbfbff
-
PatchKernel patch commithttps://git.kernel.org/stable/c/51a7dd9cbae9210335ce398642ecaaa52c939eb5
Frequently asked questions
-
What is CVE-2026-46292?
CVE-2026-46292 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.18 onward and has been patched in 6.6.141, 6.12.88, 6.18.30 and others. CVE-2026-46292 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-46292?
Yes — CVE-2026-46292 has been patched. Fixed versions include 6.6.141, 6.12.88, 6.18.30 and others. If you are running Linux kernel 4.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-46292 actively exploited?
No — CVE-2026-46292 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.