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slirp: fix CVE 2007-5729
[qemu]
/
slirp
/
slirp.c
diff --git
a/slirp/slirp.c
b/slirp/slirp.c
index
de4b480
..
17b40e2
100644
(file)
--- a/
slirp/slirp.c
+++ b/
slirp/slirp.c
@@
-654,6
+654,9
@@
void slirp_input(const uint8_t *pkt, int pkt_len)
if (!m)
return;
/* Note: we add to align the IP header */
+ if (M_FREEROOM(m) < pkt_len + 2) {
+ m_inc(m, pkt_len + 2);
+ }
m->m_len = pkt_len + 2;
memcpy(m->m_data + 2, pkt, pkt_len);