From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sat, 30 Oct 2010 23:43:10 +0000 (-0700)
Subject: net: Truncate recvfrom and sendto length to INT_MAX.
X-Git-Tag: v2.6.34.9~84
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9f1dd99a0eb80d2c1e93682c766bcddbdf42f30f;p=thirdparty%2Fkernel%2Fstable.git

net: Truncate recvfrom and sendto length to INT_MAX.

commit 253eacc070b114c2ec1f81b067d2fed7305467b0 upstream.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---

diff --git a/net/socket.c b/net/socket.c
index 5e8d0af3c0e73..c63ebf4e31b5e 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1672,6 +1672,8 @@ SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len,
 	struct iovec iov;
 	int fput_needed;
 
+	if (len > INT_MAX)
+		len = INT_MAX;
 	sock = sockfd_lookup_light(fd, &err, &fput_needed);
 	if (!sock)
 		goto out;
@@ -1729,6 +1731,8 @@ SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size,
 	int err, err2;
 	int fput_needed;
 
+	if (size > INT_MAX)
+		size = INT_MAX;
 	sock = sockfd_lookup_light(fd, &err, &fput_needed);
 	if (!sock)
 		goto out;