CVE-2022-49866

In the Linux kernel, the following vulnerability has been resolved:

net: wwan: mhi: fix memory leak in mhi_mbim_dellink

MHI driver registers network device without setting the needs_free_netdev flag, and does NOT call free_netdev() when unregisters network device, which causes a memory leak.

This patch sets needs_free_netdev to true when registers network device, which makes netdev subsystem call free_netdev() automatically after unregister_netdevice().

The vulnerability in mhi_mbim_dellink() may lead to a memory leak due to the lack of free_netdev() call during device unregistration. Since triggering this condition requires root-level access to register and unregister network devices through the MHI WWAN interface, the CVSS vector includes PR:H.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.