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| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2012-05-12 01:00:03 +0000 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2012-05-17 00:56:33 +0200 |
| commit | 58618115492711d99fbccb79c5317299e32231fe (patch) | |
| tree | 6fd9fe61601aee724c16d2e5d26d5219e54fc042 | |
| parent | netfilter: xt_hashlimit: use _ALL macro to reject unknown flag bits (diff) | |
| download | wireguard-linux-58618115492711d99fbccb79c5317299e32231fe.tar.xz wireguard-linux-58618115492711d99fbccb79c5317299e32231fe.zip | |
netfilter: xt_HMARK: potential NULL dereference in get_inner_hdr()
There is a typo in the error checking and "&&" was used instead of "||".
If skb_header_pointer() returns NULL then it leads to a NULL
dereference.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to '')
| -rw-r--r-- | net/netfilter/xt_HMARK.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netfilter/xt_HMARK.c b/net/netfilter/xt_HMARK.c index 32fbd735d02b..5817d03105b2 100644 --- a/net/netfilter/xt_HMARK.c +++ b/net/netfilter/xt_HMARK.c @@ -223,7 +223,7 @@ static int get_inner_hdr(const struct sk_buff *skb, int iphsz, int *nhoff) /* Not enough header? */ icmph = skb_header_pointer(skb, *nhoff + iphsz, sizeof(_ih), &_ih); - if (icmph == NULL && icmph->type > NR_ICMP_TYPES) + if (icmph == NULL || icmph->type > NR_ICMP_TYPES) return 0; /* Error message? */ |