[PATCH] af_rxrpc: Fix XDR length check in rxrpc key demarshalling.
David Howells
dhowells at redhat.com
Thu May 15 07:51:22 PDT 2014
From: Nathaniel W Filardo <nwf at cs.jhu.edu>
There may be padding on the ticket contained in the key payload, so just ensure
that the claimed token length is large enough, rather than exactly the right
size.
Signed-off-by: Nathaniel Wesley Filardo <nwf at cs.jhu.edu>
Signed-off-by: David Howells <dhowells at redhat.com>
---
net/rxrpc/ar-key.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/rxrpc/ar-key.c b/net/rxrpc/ar-key.c
index 7633a752c65e..0ad080790a32 100644
--- a/net/rxrpc/ar-key.c
+++ b/net/rxrpc/ar-key.c
@@ -99,7 +99,7 @@ static int rxrpc_instantiate_xdr_rxkad(struct key *key, const __be32 *xdr,
_debug("tktlen: %x", tktlen);
if (tktlen > AFSTOKEN_RK_TIX_MAX)
return -EKEYREJECTED;
- if (8 * 4 + tktlen != toklen)
+ if (toklen < 8 * 4 + tktlen)
return -EKEYREJECTED;
plen = sizeof(*token) + sizeof(*token->kad) + tktlen;
More information about the linux-afs
mailing list