X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flibsystemd-bus%2Fbus-message.c;h=524f17eb9f952707ebdbc91da3c98121a4c14e1c;hp=c0a0242fd612dfd7b2ce2e082f0ebaa069abb20e;hb=b8beb2781682738f3a59aab993bf2869447a77c9;hpb=e3017af97310da024ffb378ed155bc1676922ce7

diff --git a/src/libsystemd-bus/bus-message.c b/src/libsystemd-bus/bus-message.c
index c0a0242fd..524f17eb9 100644
--- a/src/libsystemd-bus/bus-message.c
+++ b/src/libsystemd-bus/bus-message.c
@@ -768,11 +768,27 @@ int message_append_basic(sd_bus_message *m, char type, const void *p, const void
 
         case SD_BUS_TYPE_STRING:
         case SD_BUS_TYPE_OBJECT_PATH:
+
+                if (!p) {
+                        if (e)
+                                c->signature[c->index] = 0;
+
+                        return -EINVAL;
+                }
+
                 align = 4;
                 sz = 4 + strlen(p) + 1;
                 break;
 
         case SD_BUS_TYPE_SIGNATURE:
+
+                if (!p) {
+                        if (e)
+                                c->signature[c->index] = 0;
+
+                        return -EINVAL;
+                }
+
                 align = 1;
                 sz = 1 + strlen(p) + 1;
                 break;