From: Phil Sutter <phil@nwl.cc>
To: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: netfilter-devel@vger.kernel.org
Subject: [libnftnl PATCH 5/6] src/set_elem: Don't return garbage in nftnl_set_elems_parse()
Date: Thu, 14 Dec 2017 20:40:24 +0100 [thread overview]
Message-ID: <20171214194025.21334-6-phil@nwl.cc> (raw)
In-Reply-To: <20171214194025.21334-1-phil@nwl.cc>
This might happen if netlink message is malformed (no nested attributes
are present), so treat this as an error and return -1 instead of
garbage to caller.
Signed-off-by: Phil Sutter <phil@nwl.cc>
---
src/set_elem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/set_elem.c b/src/set_elem.c
index e45dbc6bfe3e4..71c279a540860 100644
--- a/src/set_elem.c
+++ b/src/set_elem.c
@@ -490,7 +490,7 @@ nftnl_set_elem_list_parse_attr_cb(const struct nlattr *attr, void *data)
static int nftnl_set_elems_parse(struct nftnl_set *s, const struct nlattr *nest)
{
struct nlattr *attr;
- int ret;
+ int ret = -1;
mnl_attr_for_each_nested(attr, nest) {
if (mnl_attr_get_type(attr) != NFTA_LIST_ELEM)
--
2.13.1
next prev parent reply other threads:[~2017-12-14 19:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-14 19:40 [libnftnl PATCH 0/6] Another round of Covscan indicated fixes Phil Sutter
2017-12-14 19:40 ` [libnftnl PATCH 1/6] nftnl_data_reg_snprintf: Add a missing break Phil Sutter
2017-12-15 15:17 ` Pablo Neira Ayuso
2017-12-14 19:40 ` [libnftnl PATCH 2/6] src/gen: Remove a pointless call to mnl_nlmsg_get_payload() Phil Sutter
2017-12-15 15:17 ` Pablo Neira Ayuso
2017-12-14 19:40 ` [libnftnl PATCH 3/6] src/object: Avoid returning garbage in nftnl_obj_do_parse() Phil Sutter
2017-12-15 15:18 ` Pablo Neira Ayuso
2017-12-14 19:40 ` [libnftnl PATCH 4/6] src/ruleset: Avoid reading garbage in nftnl_ruleset_cb() Phil Sutter
2017-12-15 15:18 ` Pablo Neira Ayuso
2017-12-14 19:40 ` Phil Sutter [this message]
2017-12-15 15:19 ` [libnftnl PATCH 5/6] src/set_elem: Don't return garbage in nftnl_set_elems_parse() Pablo Neira Ayuso
2017-12-14 19:40 ` [libnftnl PATCH 6/6] src/trace: Check return value of mnl_attr_parse_nested() Phil Sutter
2017-12-15 15:20 ` Pablo Neira Ayuso
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