CVE-2024-44974

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

mptcp: pm: avoid possible UaF when selecting endp

select_local_address() and select_signal_address() both select an

endpoint entry from the list inside an RCU protected section, but return

a reference to it, to be read later on. If the entry is dereferenced

after the RCU unlock, reading info could cause a Use-after-Free.

A simple solution is to copy the required info while inside the RCU

protected section to avoid any risk of UaF later. The address ID might

need to be modified later to handle the ID0 case later, so a copy seems

OK to deal with.