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.

kernel.org https://git.kernel.org/stable/c/5e305b5986dc52122a9368a1461f0c13e1de3fd6 [No types assigned]

kernel.org https://git.kernel.org/stable/c/bab2f5e8fd5d2f759db26b78d9db57412888f187 [No types assigned]

kernel.org https://git.kernel.org/stable/c/c69fd8afacebfdf2f8a1ee1ea7e0723786529874 [No types assigned]