diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2016-2857.patch')
-rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2016-2857.patch | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2016-2857.patch b/meta/recipes-devtools/qemu/qemu/CVE-2016-2857.patch deleted file mode 100644 index 73cfa2a1eb..0000000000 --- a/meta/recipes-devtools/qemu/qemu/CVE-2016-2857.patch +++ /dev/null | |||
@@ -1,51 +0,0 @@ | |||
1 | From 362786f14a753d8a5256ef97d7c10ed576d6572b Mon Sep 17 00:00:00 2001 | ||
2 | From: Prasad J Pandit <pjp@fedoraproject.org> | ||
3 | Date: Wed, 2 Mar 2016 17:29:58 +0530 | ||
4 | Subject: [PATCH] net: check packet payload length | ||
5 | |||
6 | While computing IP checksum, 'net_checksum_calculate' reads | ||
7 | payload length from the packet. It could exceed the given 'data' | ||
8 | buffer size. Add a check to avoid it. | ||
9 | |||
10 | Reported-by: Liu Ling <liuling-it@360.cn> | ||
11 | Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> | ||
12 | Signed-off-by: Jason Wang <jasowang@redhat.com> | ||
13 | |||
14 | Upstream-Status: Backport | ||
15 | CVE: CVE-2016-2857 | ||
16 | |||
17 | http://git.qemu.org/?p=qemu.git;a=commit;h=362786f14a753d8a5256ef97d7c10ed576d6572b | ||
18 | Signed-off-by: Armin Kuster <akuster@mvista.com> | ||
19 | |||
20 | --- | ||
21 | net/checksum.c | 10 ++++++++-- | ||
22 | 1 file changed, 8 insertions(+), 2 deletions(-) | ||
23 | |||
24 | Index: qemu-2.5.0/net/checksum.c | ||
25 | =================================================================== | ||
26 | --- qemu-2.5.0.orig/net/checksum.c | ||
27 | +++ qemu-2.5.0/net/checksum.c | ||
28 | @@ -59,6 +59,11 @@ void net_checksum_calculate(uint8_t *dat | ||
29 | int hlen, plen, proto, csum_offset; | ||
30 | uint16_t csum; | ||
31 | |||
32 | + /* Ensure data has complete L2 & L3 headers. */ | ||
33 | + if (length < 14 + 20) { | ||
34 | + return; | ||
35 | + } | ||
36 | + | ||
37 | if ((data[14] & 0xf0) != 0x40) | ||
38 | return; /* not IPv4 */ | ||
39 | hlen = (data[14] & 0x0f) * 4; | ||
40 | @@ -76,8 +81,9 @@ void net_checksum_calculate(uint8_t *dat | ||
41 | return; | ||
42 | } | ||
43 | |||
44 | - if (plen < csum_offset+2) | ||
45 | - return; | ||
46 | + if (plen < csum_offset + 2 || 14 + hlen + plen > length) { | ||
47 | + return; | ||
48 | + } | ||
49 | |||
50 | data[14+hlen+csum_offset] = 0; | ||
51 | data[14+hlen+csum_offset+1] = 0; | ||