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authorDan Carpenter <error27@gmail.com>2010-09-09 21:56:16 -0400
committerDavid S. Miller <davem@davemloft.net>2010-09-13 15:44:10 -0400
commit339db11b219f36cf7da61b390992d95bb6b7ba2e (patch)
tree38faf26336bb97d53dddf918d360914f709e2254 /net
parenta505b3b30fc69904f858822a2aa95990a4bf7958 (diff)
net/llc: make opt unsigned in llc_ui_setsockopt()
The members of struct llc_sock are unsigned so if we pass a negative value for "opt" it can cause a sign bug. Also it can cause an integer overflow when we multiply "opt * HZ". CC: stable@kernel.org Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/llc/af_llc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index 023ba820236f..582612998211 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -1024,7 +1024,8 @@ static int llc_ui_setsockopt(struct socket *sock, int level, int optname,
1024{ 1024{
1025 struct sock *sk = sock->sk; 1025 struct sock *sk = sock->sk;
1026 struct llc_sock *llc = llc_sk(sk); 1026 struct llc_sock *llc = llc_sk(sk);
1027 int rc = -EINVAL, opt; 1027 unsigned int opt;
1028 int rc = -EINVAL;
1028 1029
1029 lock_sock(sk); 1030 lock_sock(sk);
1030 if (unlikely(level != SOL_LLC || optlen != sizeof(int))) 1031 if (unlikely(level != SOL_LLC || optlen != sizeof(int)))