CVE-2026-90281

/// Technical description

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.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References