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-rw-r--r--net/ipv4/tcp.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index a5980a5..7ac0ce6 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2627,7 +2627,10 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
/* Cap the max timeout in ms TCP will retry/retrans
* before giving up and aborting (ETIMEDOUT) a connection.
*/
- icsk->icsk_user_timeout = msecs_to_jiffies(val);
+ if (val < 0)
+ err = -EINVAL;
+ else
+ icsk->icsk_user_timeout = msecs_to_jiffies(val);
break;
default:
err = -ENOPROTOOPT;