[dpdk-stable] [PATCH] ipc: handle more invalid parameter cases

[Anatoly Burakov]

Length of buffer and number of fd's to send are signed values, so
they can be negative, but the API doesn't check for that. Fix it
by checking for negative values as well.

Fixes: bacaa2754017 ("eal: add channel for multi-process communication")
Cc: stable at dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com>
---
 lib/librte_eal/common/eal_common_proc.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/librte_eal/common/eal_common_proc.c b/lib/librte_eal/common/eal_common_proc.c
index b46d644b3..42df2b3bf 100644
--- a/lib/librte_eal/common/eal_common_proc.c
+++ b/lib/librte_eal/common/eal_common_proc.c
@@ -758,6 +758,18 @@ check_input(const struct rte_mp_msg *msg)
 	if (validate_action_name(msg->name))
 		return false;
 
+	if (msg->len_param < 0) {
+		RTE_LOG(ERR, EAL, "Message data length is negative\n");
+		rte_errno = EINVAL;
+		return false;
+	}
+
+	if (msg->num_fds < 0) {
+		RTE_LOG(ERR, EAL, "Number of fd's is negative\n");
+		rte_errno = EINVAL;
+		return false;
+	}
+
 	if (msg->len_param > RTE_MP_MAX_PARAM_LEN) {
 		RTE_LOG(ERR, EAL, "Message data is too long\n");
 		rte_errno = E2BIG;
-- 
2.17.1