CVE-2021-47143 Information

Description

In the Linux kernel the following vulnerability has been resolved:

net/smc: remove device from smcd_dev_list after failed device_add()

If the device_add() for a smcd_dev fails there’s no cleanup step that rolls back the earlier list_add(). The device subsequently gets freed and we end up with a corrupted list.

Add some error handling that removes the device from the list.

Reference

https://git.kernel.org/stable/c/8b2cdc004d21a7255f219706dca64411108f7897 https://git.kernel.org/stable/c/40588782f1016c655ae1d302892f61d35af96842 https://git.kernel.org/stable/c/444d7be9532dcfda8e0385226c862fd7e986f607