[posix] verify in otPlatUdpBindToNetif if Backbone Interface is set. (

openthread#9696) Commit adds check to `otPlatUdpBindToNetif` if backbone interface is set to correct value to prevent `setsockopt` from crashing the ot-daemon.
espressif · Dec 13, 2023 · 35424b3 · 35424b3
1 parent a62e238
commit 35424b3
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/posix/platform/udp.cpp b/src/posix/platform/udp.cpp
@@ -323,6 +323,11 @@ otError otPlatUdpBindToNetif(otUdpSocket *aUdpSocket, otNetifIdentifier aNetifId
     case OT_NETIF_BACKBONE:
     {
 #if OPENTHREAD_CONFIG_BACKBONE_ROUTER_ENABLE
+        if (otSysGetInfraNetifName() == nullptr || otSysGetInfraNetifName()[0] == '\0')
+        {
+            otLogWarnPlat("No backbone interface given, %s fails.", __func__);
+            ExitNow(error = OT_ERROR_INVALID_ARGS);
+        }
 #if __linux__
         VerifyOrExit(setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, otSysGetInfraNetifName(),
                                 strlen(otSysGetInfraNetifName())) == 0,