CVE-2022-48873 Information

Description

In the Linux kernel the following vulnerability has been resolved:

misc: fastrpc: Don’t remove map on creater_process and device_release

Do not remove the map from the list on error path in fastrpc_init_create_process instead call fastrpc_map_put to avoid use-after-free. Do not remove it on fastrpc_device_release either call fastrpc_map_put instead.

The fastrpc_free_map is the only proper place to remove the map. This is called only after the reference count is 0.

Reference

https://git.kernel.org/stable/c/4b5c44e924a571d0ad07054de549624fbc04e4d7 https://git.kernel.org/stable/c/193cd853145b63e670bd73740250983af1475330 https://git.kernel.org/stable/c/1b7b7bb400dd13dcb03fc6e591bb7ca4664bbec8 https://git.kernel.org/stable/c/35ddd482345c43d9eec1f3406c0f20a95ed4054b https://git.kernel.org/stable/c/5bb96c8f9268e2fdb0e5321cbc358ee5941efc15