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qemu/0063-net-rtl8139-limit-processing-of-rin.patch
Andreas Färber 3430f55120 Accepting request 441247 from home:bfrogers:branches:Virtualization
Refine the reproducible build changes to no longer override linux commands, but rather fix via patches only. Also fix all the recent security issues reported.

OBS-URL: https://build.opensuse.org/request/show/441247
OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=320
2016-11-21 17:05:46 +00:00

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From 854b5adf363ebfb07ad0134079401d62cdf25b77 Mon Sep 17 00:00:00 2001
From: Prasad J Pandit <pjp@fedoraproject.org>
Date: Fri, 21 Oct 2016 17:39:29 +0530
Subject: [PATCH] net: rtl8139: limit processing of ring descriptors
RTL8139 ethernet controller in C+ mode supports multiple
descriptor rings, each with maximum of 64 descriptors. While
processing transmit descriptor ring in 'rtl8139_cplus_transmit',
it does not limit the descriptor count and runs forever. Add
check to avoid it.
Reported-by: Andrew Henderson <hendersa@icculus.org>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit c7c35916692fe010fef25ac338443d3fe40be225)
[BR: CVE-2016-8910 BSC#1006538]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
hw/net/rtl8139.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c
index 3345bc6..f05e59c 100644
--- a/hw/net/rtl8139.c
+++ b/hw/net/rtl8139.c
@@ -2350,7 +2350,7 @@ static void rtl8139_cplus_transmit(RTL8139State *s)
{
int txcount = 0;
- while (rtl8139_cplus_transmit_one(s))
+ while (txcount < 64 && rtl8139_cplus_transmit_one(s))
{
++txcount;
}