CVE-2024-27394 Information

Description

In the Linux kernel the following vulnerability has been resolved:

tcp: Fix Use-After-Free in tcp_ao_connect_init

Since call_rcu which is called in the hlist_for_each_entry_rcu traversal of tcp_ao_connect_init is not part of the RCU read critical section it is possible that the RCU grace period will pass during the traversal and the key will be free.

To prevent this it should be changed to hlist_for_each_entry_safe.

Reference

https://git.kernel.org/stable/c/ca4fb6c6764b3f75b4f5aa81db1536291897ff7f https://git.kernel.org/stable/c/80e679b352c3ce5158f3f778cfb77eb767e586fb