Linux · Linux Kernel · CVE-2013-4563
**Name of the Vulnerable Software and Affected Versions**
Linux kernel versions prior to 3.13
**Description**
The issue is related to the udp6 ufo fragment function in the Linux kernel, which does not properly perform a size comparison before inserting a fragment header when UDP Fragmentation Offload (UFO) is enabled. This allows remote attackers to cause a denial of service (panic) via a large IPv6 UDP packet.
**Recommendations**
For Linux kernel versions prior to 3.13, update to version 3.13 or later to resolve the issue. As a temporary workaround, consider disabling UDP Fragmentation Offload (UFO) until a patch is available.