If SEP has not been properly discovered avdtp_get_codec may return NULL
thus causing crashes such as when running AVRCP/TG/VLH/BI-01-C after
AVRCP/TG/RCR/BV-04-C.
The endpoint should not be registered if its codec is not available.
---
v2: don't register enpoint if its codec is unavailable
profiles/audio/a2dp.c | 22 +++++++++++++++++++---
1 file changed, 19 insertions(+), 3 deletions(-)
diff --git a/profiles/audio/a2dp.c b/profiles/audio/a2dp.c
index f761dbe54..8c20f22f0 100644
--- a/profiles/audio/a2dp.c
+++ b/profiles/audio/a2dp.c
@@ -1995,7 +1995,12 @@ static gboolean get_codec(const GDBusPropertyTable *property,
{
struct a2dp_remote_sep *sep = data;
struct avdtp_service_capability *cap = avdtp_get_codec(sep->sep);
- struct avdtp_media_codec_capability *codec = (void *) cap->data;
+ struct avdtp_media_codec_capability *codec;
+
+ if (!cap)
+ return FALSE;
+
+ codec = (void *) cap->data;
dbus_message_iter_append_basic(iter, DBUS_TYPE_BYTE,
&codec->media_codec_type);
@@ -2008,10 +2013,16 @@ static gboolean get_capabilities(const GDBusPropertyTable *property,
{
struct a2dp_remote_sep *sep = data;
struct avdtp_service_capability *service = avdtp_get_codec(sep->sep);
- struct avdtp_media_codec_capability *codec = (void *) service->data;
- uint8_t *caps = codec->data;
+ struct avdtp_media_codec_capability *codec;
+ uint8_t *caps;
DBusMessageIter array;
+ if (!service)
+ return FALSE;
+
+ codec = (void *) service->data;
+ caps = codec->data;
+
dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY,
DBUS_TYPE_BYTE_AS_STRING, &array);
@@ -2076,6 +2087,11 @@ static struct a2dp_remote_sep *register_remote_sep(void *data, void *user_data)
if (sep)
return sep;
+ if (!avdtp_get_codec(rsep)) {
+ error("Unable to get remote sep codec");
+ return NULL;
+ }
+
sep = new0(struct a2dp_remote_sep, 1);
sep->chan = chan;
sep->sep = rsep;
--
2.25.1