CVE-2026-90282

Summary

In the Linux kernel, the following vulnerability has been resolved:

phy: qcom: qmp-usb-legacy: 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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe464a3180a43b6596bd267f9f274e1793bfb8150 < 602059c5128a78857ca92bd22791ab640185e381affected
LinuxLinuxe464a3180a43b6596bd267f9f274e1793bfb8150 < 29449ce1f5958e36df80318878016e3ecac26b40affected
LinuxLinuxe464a3180a43b6596bd267f9f274e1793bfb8150 < 52ad86ea5f98d29a7a29d9ba12e24276c6e30acdaffected
LinuxLinuxe464a3180a43b6596bd267f9f274e1793bfb8150 < 0f9789d1b63e7d9f868ac9c29564339a4c03ceb5affected
LinuxLinuxe464a3180a43b6596bd267f9f274e1793bfb8150 < 8e3687f7e18fe84372e86875709d56c37e7525a8affected
LinuxLinux6.6affected
LinuxLinux0 < 6.6unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References