Linux Kernel Memory Leak Vulnerability in LAN743X Driver with GSO Enabled

A memory leak vulnerability has been identified in the Linux kernel's LAN743X network driver when Generic Segmentation Offload (GSO) is enabled. The issue arises because the socket buffer (skb) is incorrectly mapped to the EXT descriptor instead of the LS descriptor when there are no fragments. This misallocation prevents the skb from being properly freed, leading to a memory leak.

Impact

Exploitation of this vulnerability causes a memory leak, which can degrade system performance over time by consuming available memory resources.