CVE-2024-50021

Technical Description

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

ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins()

This patch addresses a reference count handling issue in the

ice_dpll_init_rclk_pins() function. The function calls ice_dpll_get_pins(),

which increments the reference count of the relevant resources. However,

if the condition WARN_ON((!vsi || !vsi->netdev)) is met, the function

currently returns an error without properly releasing the resources

acquired by ice_dpll_get_pins(), leading to a reference count leak.

To resolve this, the check has been moved to the top of the function. This

ensures that the function verifies the state before any resources are

acquired, avoiding the need for additional resource management in the

error path.

This bug was identified by an experimental static analysis tool developed

by our team. The tool specializes in analyzing reference count operations

and detecting potential issues where resources are not properly manag

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

References