sctp: sctp_sendmsg: Don't initialize default_sinfo
This variable only needs initialization when cmsgs.info
is NULL.
Use memset to ensure padding is also zeroed so
kernel doesn't leak any data.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 33d9ee6..d4b8db1 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1496,7 +1496,7 @@
struct sctp_chunk *chunk;
union sctp_addr to;
struct sockaddr *msg_name = NULL;
- struct sctp_sndrcvinfo default_sinfo = { 0 };
+ struct sctp_sndrcvinfo default_sinfo;
struct sctp_sndrcvinfo *sinfo;
struct sctp_initmsg *sinit;
sctp_assoc_t associd = 0;
@@ -1760,6 +1760,7 @@
/* If the user didn't specify SNDRCVINFO, make up one with
* some defaults.
*/
+ memset(&default_sinfo, 0, sizeof(default_sinfo));
default_sinfo.sinfo_stream = asoc->default_stream;
default_sinfo.sinfo_flags = asoc->default_flags;
default_sinfo.sinfo_ppid = asoc->default_ppid;
