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 <chuck.lever@xxxxxxxxxx>
---
net/sunrpc/auth.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 2bc0cc2..ed2fdd2 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);
--
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