mirror of https://github.com/torvalds/linux.git
e34b9ed96c
When verdict is NF_STOLEN, the skb might have been freed. When tracing is enabled, this can result in a use-after-free: 1. access to skb->nf_trace 2. access to skb->mark 3. computation of trace id 4. dump of packet payload To avoid 1, keep a cached copy of skb->nf_trace in the trace state struct. Refresh this copy whenever verdict is != STOLEN. Avoid 2 by skipping skb->mark access if verdict is STOLEN. 3 is avoided by precomputing the trace id. Only dump the packet when verdict is not "STOLEN". Reported-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> |
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| .. | ||
| ipv4 | ||
| ipv6 | ||
| br_netfilter.h | ||
| nf_conntrack.h | ||
| nf_conntrack_acct.h | ||
| nf_conntrack_act_ct.h | ||
| nf_conntrack_bpf.h | ||
| nf_conntrack_bridge.h | ||
| nf_conntrack_core.h | ||
| nf_conntrack_count.h | ||
| nf_conntrack_ecache.h | ||
| nf_conntrack_expect.h | ||
| nf_conntrack_extend.h | ||
| nf_conntrack_helper.h | ||
| nf_conntrack_l4proto.h | ||
| nf_conntrack_labels.h | ||
| nf_conntrack_seqadj.h | ||
| nf_conntrack_synproxy.h | ||
| nf_conntrack_timeout.h | ||
| nf_conntrack_timestamp.h | ||
| nf_conntrack_tuple.h | ||
| nf_conntrack_zones.h | ||
| nf_dup_netdev.h | ||
| nf_flow_table.h | ||
| nf_hooks_lwtunnel.h | ||
| nf_log.h | ||
| nf_nat.h | ||
| nf_nat_helper.h | ||
| nf_nat_masquerade.h | ||
| nf_nat_redirect.h | ||
| nf_queue.h | ||
| nf_reject.h | ||
| nf_socket.h | ||
| nf_synproxy.h | ||
| nf_tables.h | ||
| nf_tables_core.h | ||
| nf_tables_ipv4.h | ||
| nf_tables_ipv6.h | ||
| nf_tables_offload.h | ||
| nf_tproxy.h | ||
| nft_fib.h | ||
| nft_meta.h | ||
| nft_reject.h | ||
| xt_rateest.h | ||