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authorPatrick McHardy <kaber@trash.net>2007-01-30 14:25:24 -0800
committerDavid S. Miller <davem@davemloft.net>2007-01-30 14:25:24 -0800
commitadcb4711101dfef89d473f64a913089d303962ae (patch)
treec582cac3adbfd25fe09f91f9a62cfdbcfcb62714
parent7da5bfbb12e327b3a347ee3e076957cd6564eb56 (diff)
[NETFILTER]: SIP conntrack: fix out of bounds memory access
When checking for an @-sign in skp_epaddr_len, make sure not to run over the packet boundaries. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/netfilter/ip_conntrack_sip.c2
-rw-r--r--net/netfilter/nf_conntrack_sip.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_sip.c b/net/ipv4/netfilter/ip_conntrack_sip.c
index 571d27e2091..11c588a10e6 100644
--- a/net/ipv4/netfilter/ip_conntrack_sip.c
+++ b/net/ipv4/netfilter/ip_conntrack_sip.c
@@ -292,7 +292,7 @@ static int skp_epaddr_len(const char *dptr, const char *limit, int *shift)
dptr++;
}
- if (*dptr == '@') {
+ if (dptr <= limit && *dptr == '@') {
dptr++;
(*shift)++;
} else
diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index c93fb37a54f..9dec1153467 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -312,7 +312,7 @@ static int skp_epaddr_len(struct nf_conn *ct, const char *dptr,
dptr++;
}
- if (*dptr == '@') {
+ if (dptr <= limit && *dptr == '@') {
dptr++;
(*shift)++;
} else