In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Restrict untrusted app to attach to privileged PD Untrusted application with access to only non-secure fastrpc device node can attach to root_pd or static PDs if it can make the respective init request. This can cause problems as the untrusted application can send bad requests to root_pd or static PDs. Add changes to reject attach to privileged PDs if the request is being made using non-secure fastrpc device node.
https://git.kernel.org/stable/c/ea13bd807f1cef1af375d999980a9b9794c789b6
https://git.kernel.org/stable/c/c69fd8afacebfdf2f8a1ee1ea7e0723786529874
https://git.kernel.org/stable/c/bab2f5e8fd5d2f759db26b78d9db57412888f187
https://git.kernel.org/stable/c/5e305b5986dc52122a9368a1461f0c13e1de3fd6
https://git.kernel.org/stable/c/2eb973ee4770a26d9b5e292b58ad29822d321c7f