Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v4.19.256

Description The issue is related to a refcount leak in the setup msi msg address function. It was introduced in version v2.6.23 and fixed in version v4.19.256. The actual impact and attack plausibility have not yet been proven.

Recommendations For versions prior to v4.19.256, update to version v4.19.256 or later to resolve the issue. As a temporary workaround, consider restricting access to the setup msi msg address function until a patch is available.