CVE-2024-50159

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.6.61

Description The issue is related to a double free in the scmi debugfs common setup() function in the Linux kernel. This occurs when devm add action or reset() fails, causing scmi debugfs common cleanup() to run twice and resulting in the double free of 'dbg->name'. The Clang static checker throws a warning about an attempt to free released memory. The vulnerability may allow an attacker to impact the confidentiality, integrity, and availability of protected information.

Recommendations For Linux kernel versions prior to 6.6.61, update to version 6.6.61 or later to fix the issue. As a temporary workaround, consider disabling the scmi debugfs common setup() function until a patch is available. Restrict access to the drivers/firmware/arm scmi/driver.c module to minimize the risk of exploitation. Avoid using the dbg->name variable in the affected code until the issue is resolved.