CVE-2025-38516

/// Technical description

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

pinctrl: qcom: msm: mark certain pins as invalid for interrupts

On some platforms, the UFS-reset pin has no interrupt logic in TLMM but

is nevertheless registered as a GPIO in the kernel. This enables the

user-space to trigger a BUG() in the pinctrl-msm driver by running, for

example: `gpiomon -c 0 113` on RB2.

The exact culprit is requesting pins whose intr_detection_width setting

is not 1 or 2 for interrupts. This hits a BUG() in

msm_gpio_irq_set_type(). Potentially crashing the kernel due to an

invalid request from user-space is not optimal, so let's go through the

pins and mark those that would fail the check as invalid for the irq chip

as we should not even register them as available irqs.

This function can be extended if we determine that there are more

corner-cases like this.

/// 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