In the Linux kernel, the following vulnerability has been resolved:
mctp: fix use after free
Clang static analysis reports this problem route.c:425:4: warning: Use of memory after it is freed tracemctpkeyacquire(key); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ When mctpkeyadd() fails, key is freed but then is later used in tracemctpkeyacquire(). Add an else statement to use the key only when mctpkeyadd() is successful.