blob: 4da701a73d83554ae94dbb212421487135ad95ea (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
Fix CVE-2017-11434:
https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg05001.html
https://bugzilla.redhat.com/show_bug.cgi?id=1472611
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11434
https://security-tracker.debian.org/tracker/CVE-2017-11434
Patch copied from upstream source repository:
https://git.qemu.org/gitweb.cgi?p=qemu.git;a=commit;h=413d463f43fbc4dd3a601e80a5724aa384a265a0
diff --git a/slirp/bootp.c b/slirp/bootp.c
index 5a4646c182..5dd1a415b5 100644
--- a/slirp/bootp.c
+++ b/slirp/bootp.c
@@ -123,6 +123,9 @@ static void dhcp_decode(const struct bootp_t *bp, int *pmsg_type,
if (p >= p_end)
break;
len = *p++;
+ if (p + len > p_end) {
+ break;
+ }
DPRINTF("dhcp: tag=%d len=%d\n", tag, len);
switch(tag) {
|