diff options
| -rw-r--r-- | src/libsystemd/sd-bus/bus-internal.c | 2 | ||||
| -rw-r--r-- | src/libsystemd/sd-bus/bus-internal.h | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/src/libsystemd/sd-bus/bus-internal.c b/src/libsystemd/sd-bus/bus-internal.c index 7bb653338d..35e0b668ee 100644 --- a/src/libsystemd/sd-bus/bus-internal.c +++ b/src/libsystemd/sd-bus/bus-internal.c @@ -45,7 +45,7 @@ bool object_path_is_valid(const char *p) { if (slash) return false; - return true; + return (q - p) <= BUS_PATH_SIZE_MAX; } char* object_path_startswith(const char *a, const char *b) { diff --git a/src/libsystemd/sd-bus/bus-internal.h b/src/libsystemd/sd-bus/bus-internal.h index 2087ef8eeb..90e6028983 100644 --- a/src/libsystemd/sd-bus/bus-internal.h +++ b/src/libsystemd/sd-bus/bus-internal.h @@ -333,6 +333,10 @@ struct sd_bus { #define BUS_MESSAGE_SIZE_MAX (128*1024*1024) #define BUS_AUTH_SIZE_MAX (64*1024) +/* Note that the D-Bus specification states that bus paths shall have no size limit. We enforce here one + * anyway, since truly unbounded strings are a security problem. The limit we pick is relatively large however, + * to not clash unnecessarily with real-life applications. */ +#define BUS_PATH_SIZE_MAX (64*1024) #define BUS_CONTAINER_DEPTH 128 |