CVE-2026-90281

Summary

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

phy: qcom: snps-femto-v2: Fix possible NULL-deref on early runtime suspend

Runtime PM must be enabled before creating the PHY, since phy_create() only enables runtime PM on the PHY device if it is already enabled on this parent device. However, the runtime PM callbacks dereference the hsphy instance, which is not yet ready, leaving a window where a suspend callback may trigger a NULL pointer dereference.

Take a runtime PM usage reference with pm_runtime_get_noresume() before enabling runtime PM and release it once the PHY has been created, so that no runtime suspend can run before the PHY is ready. This also prevents a short window where an unnecessary runtime suspend can occur.

Use the devres-managed version to ensure PM runtime is symmetrically disabled during driver removal for proper cleanup.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0d75f508a9d56133a2834215959cde4605c804d1 < 0c5c08c94dd64c05679970d4eed8b06d36a889a8affected
LinuxLinux0d75f508a9d56133a2834215959cde4605c804d1 < 1027b1d4e29756dfbf74ef8743456a1efa3679f0affected
LinuxLinux0d75f508a9d56133a2834215959cde4605c804d1 < 34293f5a8982a06c40af69c8c7c856b5837ac652affected
LinuxLinux0d75f508a9d56133a2834215959cde4605c804d1 < 3ddf41938fee3d148a170c31e76b0515a522ef7eaffected
LinuxLinux0d75f508a9d56133a2834215959cde4605c804d1 < 82cb1aedf4bdb279cf8853fe8f39bec4e6cffa0aaffected
LinuxLinux0d75f508a9d56133a2834215959cde4605c804d1 < 61749681e4a3629ec20b04ba2443b91016af3d2faffected
LinuxLinux0d75f508a9d56133a2834215959cde4605c804d1 < b85bbec72fa813b60e093c6bb36ae232b9b0eb5eaffected
LinuxLinux0d75f508a9d56133a2834215959cde4605c804d1 < c271a6926ea7d3c9566b033d63fd4e8c488dc860affected
LinuxLinux5.9affected
LinuxLinux0 < 5.9unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
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