From 1c74a244fcb61e6e1983d5725b8ccd5d3f51889c Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Fri, 22 Mar 2013 12:53:08 -0400 Subject: [PATCH] SUNRPC: Don't recognize RPC_AUTH_MAXFLAVOR RPC_AUTH_MAXFLAVOR is an invalid flavor, on purpose. Don't allow any processing whatsoever if a caller passes it to rpcauth_create() or rpcauth_get_gssinfo(). Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- net/sunrpc/auth.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c index 2bc0cc2196e0..ed2fdd210c0b 100644 --- a/net/sunrpc/auth.c +++ b/net/sunrpc/auth.c @@ -82,7 +82,7 @@ MODULE_PARM_DESC(auth_hashtable_size, "RPC credential cache hashtable size"); static u32 pseudoflavor_to_flavor(u32 flavor) { - if (flavor >= RPC_AUTH_MAXFLAVOR) + if (flavor > RPC_AUTH_MAXFLAVOR) return RPC_AUTH_GSS; return flavor; } @@ -173,6 +173,9 @@ rpcauth_get_gssinfo(rpc_authflavor_t pseudoflavor, struct rpcsec_gss_info *info) const struct rpc_authops *ops; int result; + if (flavor >= RPC_AUTH_MAXFLAVOR) + return -EINVAL; + ops = auth_flavors[flavor]; if (ops == NULL) request_module("rpc-auth-%u", flavor); -- 2.20.1