CVE-2026-90282 phy: qcom: qmp-usb-legacy: Fix possible NULL-deref on early runtime suspend
A local attacker can trigger a kernel crash in the Qualcomm USB PHY driver by manipulating runtime power management states before initialization.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-90282?
CVE-2026-90282 is a vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-90282?
How do I fix CVE-2026-90282?
Apply the vendor's patch.
Is CVE-2026-90282 being exploited?
There is no known exploitation of CVE-2026-90282 in the wild and no public exploit code.
Sources
Also known as AZL-102852, BELL-CVE-2026-90282, DEBIAN-CVE-2026-90282, GHSA-hprq-7rq9-g5cm, UBUNTU-CVE-2026-90282.