CVE-2026-90249

/// Technical description

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

iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes

The IIO core does not filter duplicate writes to the event enable

attribute, so writing the same value twice invokes

write_event_config() twice. Enabling twice leaks a runtime PM

reference, preventing the device from ever suspending again;

disabling twice underflows the usage count and triggers a

"Runtime PM usage count underflow" warning.

Bail out early when the requested state matches the current state.

While at it, switch to pm_runtime_resume_and_get() so a failed

resume is propagated to userspace instead of silently marking the

event enabled.

/// 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