qemu/0042-net-mipsnet-check-packet-length-aga.patch
Bruce Rogers 3847094b7e Accepting request 398983 from home:bfrogers:branches:Virtualization
Update to v2.6.0, including enabling a few more recent features. Also include a number of recent security fixes.

OBS-URL: https://build.opensuse.org/request/show/398983
OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=294
2016-05-31 21:05:30 +00:00

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1.1 KiB
Diff

From 53260b0f3e1426185786f5fe45f99ca1ded84062 Mon Sep 17 00:00:00 2001
From: Prasad J Pandit <pjp@fedoraproject.org>
Date: Thu, 7 Apr 2016 04:27:00 -0600
Subject: [PATCH] net: mipsnet: check packet length against buffer
When receiving packets over MIPSnet network device, it uses
receive buffer of size 1514 bytes. In case the controller
accepts large(MTU) packets, it could lead to memory corruption.
Add check to avoid it.
Reported by: Oleksandr Bazhaniuk <oleksandr.bazhaniuk@intel.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
[BR: BSC#975136 CVE-2016-4002]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
hw/net/mipsnet.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/net/mipsnet.c b/hw/net/mipsnet.c
index 740cd98..cf8b823 100644
--- a/hw/net/mipsnet.c
+++ b/hw/net/mipsnet.c
@@ -83,6 +83,9 @@ static ssize_t mipsnet_receive(NetClientState *nc, const uint8_t *buf, size_t si
if (!mipsnet_can_receive(nc))
return 0;
+ if (size >= sizeof(s->rx_buffer)) {
+ return 0;
+ }
s->busy = 1;
/* Just accept everything. */