diff mbox series

[PULL,24/26] net: ignore packet size greater than INT_MAX

Message ID 1539593186-32183-25-git-send-email-jasowang@redhat.com
State New
Headers show
Series [PULL,01/26] filter-rewriter: Add TCP state machine and fix memory leak in connection_track_table | expand

Commit Message

Jason Wang Oct. 15, 2018, 8:46 a.m. UTC 
There should not be a reason for passing a packet size greater than
INT_MAX. It's usually a hint of bug somewhere, so ignore packet size
greater than INT_MAX in qemu_deliver_packet_iov()

CC: qemu-stable@nongnu.org
Reported-by: Daniel Shapira <daniel@twistlock.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 net/net.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/net.c b/net/net.c
index c66847e..07c194a 100644
--- a/net/net.c
+++ b/net/net.c
@@ -712,10 +712,15 @@  ssize_t qemu_deliver_packet_iov(NetClientState *sender,
                                 void *opaque)
 {
     NetClientState *nc = opaque;
+    size_t size = iov_size(iov, iovcnt);
     int ret;
 
+    if (size > INT_MAX) {
+        return size;
+    }
+
     if (nc->link_down) {
-        return iov_size(iov, iovcnt);
+        return size;
     }
 
     if (nc->receive_disabled) {