tree b49867c60edbdcff26cf967c42f103493991746e
parent a32452366b7250c42e96a18ffc3ad8db9e0ca3c2
author Steffen Klassert <steffen.klassert@secunet.com> 1398750644 +0200
committer Steffen Klassert <steffen.klassert@secunet.com> 1398753672 +0200

xfrm4: Properly handle unsupported protocols

We don't catch the case if an unsupported protocol is submitted
to the xfrm4 protocol handlers, this can lead to NULL pointer
dereferences. Fix this by adding the appropriate checks.

Fixes: 3328715e ("xfrm4: Add IPsec protocol multiplexer")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>