Commit 7caa56f0 authored by Florian Westphal's avatar Florian Westphal Committed by Pablo Neira Ayuso

netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON

It means userspace gave us a ruleset where there is some other
data after the ebtables target but before the beginning of the next rule.

Fixes: 81e675c2 ("netfilter: ebtables: add CONFIG_COMPAT support")
Reported-by: syzbot+659574e7bcc7f7eb4df7@syzkaller.appspotmail.com
Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 5bdac418
......@@ -2032,7 +2032,8 @@ static int ebt_size_mwt(struct compat_ebt_entry_mwt *match32,
if (match_kern)
match_kern->match_size = ret;
if (WARN_ON(type == EBT_COMPAT_TARGET && size_left))
/* rule should have no remaining data after target */
if (type == EBT_COMPAT_TARGET && size_left)
return -EINVAL;
match32 = (struct compat_ebt_entry_mwt *) buf;
......
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