It is possible that ctx in nfqnl_build_packet_message() could be used
before it is properly initialize, which is only initialized
by nfqnl_get_sk_secctx().
This patch corrects this problem by initializing the lsmctx to a safe
value when it is declared.
This is similar to the commit 35fcac7a7c25
("audit: Initialize lsmctx to avoid memory allocation error").
Signed-off-by: Chenyuan Yang <chenyuan0y@xxxxxxxxx>
---
net/netfilter/nfnetlink_queue.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index 5c913987901a..8b7b39d8a109 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -567,7 +567,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue,
enum ip_conntrack_info ctinfo = 0;
const struct nfnl_ct_hook *nfnl_ct;
bool csum_verify;
- struct lsm_context ctx;
+ struct lsm_context ctx = { NULL, 0, 0 };
int seclen = 0;
ktime_t tstamp;
--
2.34.1
