rpcbind: Backport fixes to memory leak security fix
Commit
954509f added a security fix for CVE-2017-8779, involving
pairing all svc_getargs() calls with svc_freeargs() to avoid a memory
leak. However it also introduced a couple of issues:
- The call to svc_freeargs() from rpcbproc_callit_com() may result in
an attempt to free static memory, resulting in undefined behaviour.
- A typo in the svc_freeargs() call from pmapproc_dump() causes NIS
(aka ypbind) to fail.
Backport upstream fixes for these issues to version 0.2.3.
Signed-off-by: Ed Blake <ed.blake@sondrel.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit
5a9a95d0eb15c189f1361c12c105eb0ba8842c77)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>