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- fix ncurses detection; enable mixemu; enable TLS in VNC support
[packages/qemu.git] / qemu-CVE-2008-2382.patch
1 Fix CORE-2008-1210 VNC DoS
2
3 If the client sends us a limit of zero, handle appropriately.
4
5 Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
6
7 diff --git a/vnc.c b/vnc.c
8 index 3a7d762..575fd68 100644
9 --- a/vnc.c
10 +++ b/vnc.c
11 @@ -1503,10 +1503,13 @@ static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len)
12         if (len == 1)
13             return 4;
14  
15 -       if (len == 4)
16 -           return 4 + (read_u16(data, 2) * 4);
17 +       if (len == 4) {
18 +            limit = read_u16(data, 2);
19 +            if (limit > 0)
20 +                return 4 + (limit * 4);
21 +        } else
22 +            limit = read_u16(data, 2);
23  
24 -       limit = read_u16(data, 2);
25         for (i = 0; i < limit; i++) {
26             int32_t val = read_s32(data, 4 + (i * 4));
27             memcpy(data + 4 + (i * 4), &val, sizeof(val));
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