Eric Lee / smarc-fsl-linux-kernel

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Commit d3dcd4efe2ad1ad1865b2fe5c863c1ebd9482a84

Authored by Patrick McHardy
Committed by David S. Miller
1 parent 25f42b6af0

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

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>

Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff

net/netfilter/xt_sctp.c
Diff comments   View file @ d3dcd4e
... ... @@ -62,7 +62,7 @@
62 62  
63 63 do {
64 64 sch = skb_header_pointer(skb, offset, sizeof(_sch), &_sch);
65   - if (sch == NULL) {
  65 + if (sch == NULL || sch->length == 0) {
66 66 duprintf("Dropping invalid SCTP packet.\n");
67 67 *hotdrop = 1;
68 68 return 0;