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[Qemu-stable] [PATCH 4/4] net: ignore packet size greater than INT_MAX
From: |
Jason Wang |
Subject: |
[Qemu-stable] [PATCH 4/4] net: ignore packet size greater than INT_MAX |
Date: |
Tue, 25 Sep 2018 15:23:27 +0800 |
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: address@hidden
Reported-by: Daniel Shapira <address@hidden>
Signed-off-by: Jason Wang <address@hidden>
---
net/net.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/net/net.c b/net/net.c
index fd8efebfdb..df216e3811 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) {
--
2.17.1
- [Qemu-stable] [PATCH 4/4] net: ignore packet size greater than INT_MAX,
Jason Wang <=