Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.15.47

Description The issue concerns the xfrm4 protocol init() function. It was introduced in version v3.15 and fixed in Linux Kernel version v5.15.47. The actual impact and attack plausibility have not yet been proven.

Recommendations For versions prior to v5.15.47, update to Linux Kernel version v5.15.47 or later to resolve the issue. As a temporary workaround, consider restricting access to the xfrm4 protocol init() function until a patch is available.