packages/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

dp8393x: switch to use qemu_receive_packet() for loopback packet

Browse Source 
Fix CVE-2021-3416

This patch switches to use qemu_receive_packet() which can detect
reentrancy and return early.

This is intended to address CVE-2021-3416.

Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com
Signed-off-by: Jason Wang <jasowang@redhat.com>

Signed-off-by: Jiajie Li <lijiajie11@huawei.com>
This commit is contained in:
Chen Qun 2021-05-14 10:24:53 +08:00
parent 4d2eca9a6f
commit 39989f83ee
1 changed files with 42 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
dp8393x-switch-to-use-qemu_receive_packet-for-loopba.patch Normal file
View File

@ -0,0 +1,42 @@
From 3c28d0dd733d8a7cf8417105fcd65d3cae226dce Mon Sep 17 00:00:00 2001
From: Jason Wang <jasowang@redhat.com>
Date: Fri, 14 May 2021 10:24:53 +0800
Subject: [PATCH] dp8393x: switch to use qemu_receive_packet() for loopback
packet
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Fix CVE-2021-3416
This patch switches to use qemu_receive_packet() which can detect
reentrancy and return early.
This is intended to address CVE-2021-3416.
Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jiajie Li <lijiajie11@huawei.com>
---
hw/net/dp8393x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c
index bdb0b3b2c2..a64da76bf3 100644
--- a/hw/net/dp8393x.c
+++ b/hw/net/dp8393x.c
@@ -459,7 +459,7 @@ static void dp8393x_do_transmit_packets(dp8393xState *s)
s->regs[SONIC_TCR] |= SONIC_TCR_CRSL;
if (nc->info->can_receive(nc)) {
s->loopback_packet = 1;
- nc->info->receive(nc, s->tx_buffer, tx_len);
+ qemu_receive_packet(nc, s->tx_buffer, tx_len);
}
} else {
/* Transmit packet */
--
2.27.0