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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2019-04-06 08:26:52 +0300 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-04-15 07:31:50 +0200 |
| commit | 33d1c018179d0a30c39cc5f1682b77867282694b (patch) | |
| tree | 72c0d98f9a56f6ec1aa8d47d3ca311baa018b4f4 /tools | |
| parent | 3c79107631db1f7fd32cf3f7368e4672004a3010 (diff) | |
| download | kernel_replicant_linux-33d1c018179d0a30c39cc5f1682b77867282694b.tar.gz kernel_replicant_linux-33d1c018179d0a30c39cc5f1682b77867282694b.tar.bz2 kernel_replicant_linux-33d1c018179d0a30c39cc5f1682b77867282694b.zip | |
netfilter: nf_tables: prevent shift wrap in nft_chain_parse_hook()
I believe that "hook->num" can be up to UINT_MAX. Shifting more than
31 bits would is undefined in C but in practice it would lead to shift
wrapping. That would lead to an array overflow in nf_tables_addchain():
ops->hook = hook.type->hooks[ops->hooknum];
Fixes: fe19c04ca137 ("netfilter: nf_tables: remove nhooks field from struct nft_af_info")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions