]> git.pld-linux.org Git - packages/xen.git/blob - qemu-xen-4.1-testing.git-3cf61880403b4e484539596a95937cc066243388.patch
- put xend udev config file into the -xend subpackage
[packages/xen.git] / qemu-xen-4.1-testing.git-3cf61880403b4e484539596a95937cc066243388.patch
1 From 3cf61880403b4e484539596a95937cc066243388 Mon Sep 17 00:00:00 2001
2 From: Ian Campbell <Ian.Campbell@citrix.com>
3 Date: Thu, 2 Feb 2012 13:47:06 +0000
4 Subject: [PATCH] e1000: bounds packet size against buffer size
5
6 Otherwise we can write beyond the buffer and corrupt memory.  This is tracked
7 as CVE-2012-0029.
8
9 Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
10
11 (Backported from qemu upstream 65f82df0d7a71ce1b10cd4c5ab08888d176ac840
12  by Ian Campbell.)
13
14 Signed-off-by: Ian Campbell <Ian.Campbell@citrix.com>
15 (cherry picked from commit ebe37b2a3f844bad02dcc30d081f39eda06118f8)
16 ---
17  hw/e1000.c |    3 +++
18  1 files changed, 3 insertions(+), 0 deletions(-)
19
20 diff --git a/tools/ioemu-qemu-xen/hw/e1000.c b/tools/ioemu-qemu-xen/hw/e1000.c
21 index bb3689e..97104ed 100644
22 --- a/tools/ioemu-qemu-xen/hw/e1000.c
23 +++ b/tools/ioemu-qemu-xen/hw/e1000.c
24 @@ -444,6 +444,8 @@ process_tx_desc(E1000State *s, struct e1000_tx_desc *dp)
25              bytes = split_size;
26              if (tp->size + bytes > msh)
27                  bytes = msh - tp->size;
28 +
29 +            bytes = MIN(sizeof(tp->data) - tp->size, bytes);
30              cpu_physical_memory_read(addr, tp->data + tp->size, bytes);
31              if ((sz = tp->size + bytes) >= hdr && tp->size < hdr)
32                  memmove(tp->header, tp->data, hdr);
33 @@ -459,6 +461,7 @@ process_tx_desc(E1000State *s, struct e1000_tx_desc *dp)
34          // context descriptor TSE is not set, while data descriptor TSE is set
35          DBGOUT(TXERR, "TCP segmentaion Error\n");
36      } else {
37 +        split_size = MIN(sizeof(tp->data) - tp->size, split_size);
38          cpu_physical_memory_read(addr, tp->data + tp->size, split_size);
39          tp->size += split_size;
40      }
41 -- 
42 1.7.2.5
43
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