return -1;
else if (len < thoff)
return -1;
+ else if (thoff < sizeof(*iph))
+ return -1;
pkt->flags = NFT_PKTINFO_L4PROTO;
pkt->tprot = iph->protocol;
return -1;
} else if (len < thoff) {
goto inhdr_error;
+ } else if (thoff < sizeof(*iph)) {
+ return -1;
}
pkt->flags = NFT_PKTINFO_L4PROTO;
unsigned short frag_off;
protohdr = ipv6_find_hdr(pkt->skb, &thoff, -1, &frag_off, &flags);
- if (protohdr < 0) {
+ if (protohdr < 0 || thoff > U16_MAX) {
nft_set_pktinfo_unspec(pkt);
return;
}
return -1;
protohdr = ipv6_find_hdr(pkt->skb, &thoff, -1, &frag_off, &flags);
- if (protohdr < 0)
+ if (protohdr < 0 || thoff > U16_MAX)
return -1;
pkt->flags = NFT_PKTINFO_L4PROTO;
}
protohdr = ipv6_find_hdr(pkt->skb, &thoff, -1, &frag_off, &flags);
- if (protohdr < 0)
+ if (protohdr < 0 || thoff > U16_MAX)
goto inhdr_error;
pkt->flags = NFT_PKTINFO_L4PROTO;