kernel: IPv6: panic in fib6_rule_suppress when fib6_rule_lookup fails

A flaw was found in the IPv6 module of the Linux kernel. The arg.result was not used consistently in fib6rulelookup, sometimes holding rt6info and other times fib6info. This was not accounted for in other parts of the code where rt6info was expected unconditionally, potentially leading to a kerne...

CVE-2019-18198

In the Linux kernel before 5.3.4, a reference count usage error in the fib6rulesuppress function in the fib6 suppression feature of net/ipv6/fib6rules.c, when handling the FIBLOOKUPNOREF flag, can be exploited by a local attacker to corrupt memory, aka CID-ca7a03c41753...