* [PATCH] DECnet: don't leak uninitialized stack byte
@ 2010-11-23 21:02 Dan Rosenberg
2010-11-28 19:32 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Dan Rosenberg @ 2010-11-23 21:02 UTC (permalink / raw)
To: davem; +Cc: netdev
A single uninitialized padding byte is leaked to userspace.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
CC: stable <stable@kernel.org>
---
net/decnet/af_decnet.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index d6b93d1..cf38f52 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -1556,6 +1556,8 @@ static int __dn_getsockopt(struct socket *sock, int level,int optname, char __us
if (r_len > sizeof(struct linkinfo_dn))
r_len = sizeof(struct linkinfo_dn);
+ memset(&link, 0, sizeof(link));
+
switch(sock->state) {
case SS_CONNECTING:
link.idn_linkstate = LL_CONNECTING;
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2010-11-23 21:02 [PATCH] DECnet: don't leak uninitialized stack byte Dan Rosenberg
2010-11-28 19:32 ` David Miller
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