CVE-2026-90280

Description

In the Linux kernel, the following vulnerability has been resolved: phy: qcom: qmp-usb: Fix possible NULL-deref on early runtime suspend There is a small window where the runtime suspend callback may run after pm_runtime_enable() and before pm_runtime_forbid(). In this case, a crash occurs because runtime suspend/resume dereferences qmp->phy pointer, which is not yet initialized: `if (!qmp->phy->init_count) {` This can also happen if user re-enables runtime-pm via the sysfs attribute before qmp phy is initialized. Similarly to other qcom phy drivers, introduce a qmp->phy_initialized variable that can be used to avoid relying on the possibly uninitialized phy pointer.

References

• https://git.kernel.org/stable/c/03455404fb6cbfd65842695df26739853fc1516b
• https://git.kernel.org/stable/c/142c5593379273264474f31d5956b1a0065cd576
• https://git.kernel.org/stable/c/5547fd950d6bf72de861b6934341e7bb0888640c
• https://git.kernel.org/stable/c/9b28287c5dea7650e6dd317591b9e82b6e145365
• https://git.kernel.org/stable/c/f4e39ab1b2009a89c60e4cb9dbefb8140d405eff