SB20260918393 - NULL pointer dereference in Linux kernel phy qualcomm driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-90280)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a null pointer dereference in the QMP USB PHY runtime suspend and resume callbacks when runtime power management is re-enabled before the PHY is initialized. A local user can re-enable runtime power management through the sysfs attribute to cause a denial of service.

The issue may also occur during the interval after pm_runtime_enable() and before pm_runtime_forbid().

Remediation

Install update from vendor's website.

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