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[NETFILTER]: xt_sctp: fix endless loop caused by 0 chunk length

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Fix endless loop in the SCTP match similar to those already fixed in
the SCTP conntrack helper (was CVE-2006-1527).

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2006-06-19 23:39:45 -07:00 committed by David S. Miller
parent 25f42b6af0
commit d3dcd4efe2
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/xt_sctp.c
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@ -62,7 +62,7 @@ match_packet(const struct sk_buff *skb,
do {
sch = skb_header_pointer(skb, offset, sizeof(_sch), &_sch);
if (sch == NULL) {
if (sch == NULL || sch->length == 0) {
duprintf("Dropping invalid SCTP packet.\n");
*hotdrop = 1;
return 0;