TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

netfilter: nfnetlink_cthelper: unbreak userspace helper support

Browse Source 
commit 703acd70f2 upstream.

Restore helper data size initialization and fix memcopy of the helper
data size.

Fixes: 157ffffeb5 ("netfilter: nfnetlink_cthelper: reject too large userspace allocation requests")
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pablo Neira Ayuso
2020-06-03 08:18:09 +02:00
committed by Greg Kroah-Hartman
parent bfdb6de42e
commit 6d96810301
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/netfilter/nfnetlink_cthelper.c
+2 -1
View File
@@ -106,7 +106,7 @@ nfnl_cthelper_from_nlattr(struct nlattr *attr, struct nf_conn *ct)
if (help->helper->data_len == 0)
return -EINVAL;
nla_memcpy(help->data, nla_data(attr), sizeof(help->data));
nla_memcpy(help->data, attr, sizeof(help->data));
return 0;
}
@@ -240,6 +240,7 @@ nfnl_cthelper_create(const struct nlattr * const tb[],
ret = -ENOMEM;
goto err2;
}
helper->data_len = size;
helper->flags |= NF_CT_HELPER_F_USERSPACE;
memcpy(&helper->tuple, tuple, sizeof(struct nf_conntrack_tuple));