CVE-2026-46292 is a vulnerability in Linux Kernel
Published on June 8, 2026
pmdomain: core: Fix detach procedure for virtual devices in genpd
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().
Products Associated with CVE-2026-46292
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Affected Versions
Linux:- Version 3c095f32a92be4d07f3172a777dab1aacdb6a728 and below 707cb5df3eab32ddc52979418f7ace62941e6381 is affected.
- Version 3c095f32a92be4d07f3172a777dab1aacdb6a728 and below 361518a26e4434e879db6ff43bf364795dcbfbff is affected.
- Version 3c095f32a92be4d07f3172a777dab1aacdb6a728 and below 51a7dd9cbae9210335ce398642ecaaa52c939eb5 is affected.
- Version 3c095f32a92be4d07f3172a777dab1aacdb6a728 and below 8d44391a7f29e4601e8243f13498d0219bab2576 is affected.
- Version 3c095f32a92be4d07f3172a777dab1aacdb6a728 and below 26735dfdd8930d9ef1fa92e590a9bf77726efdf6 is affected.
- Version 4.18 is affected.
- Before 4.18 is unaffected.
- Version 6.6.141, <= 6.6.* is unaffected.
- Version 6.12.88, <= 6.12.* is unaffected.
- Version 6.18.30, <= 6.18.* is unaffected.
- Version 7.0.7, <= 7.0.* is unaffected.
- Version 7.1-rc3, <= * is unaffected.