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hlsdemux: don't crash or leak memory on broken master playlist

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If a (master) playlist contains a variant list entry without a
URI then during parsing of the next variant list entry we are
a) leaking the entry we're currently parsing (new_list), and
b) free'ing the pointer to the previous list entry (list) without
   updating the pointer.

Hence when then adding the URI for the latest parsed entry, incorrect
information is stored, as the information is used from 'list' which
is not valid memory anymore, also leading to crashes.

Fix this by correctly storing the new variant list entry pointer
as needed.

https://bugzilla.gnome.org/show_bug.cgi?id=756861
This commit is contained in:
André Draszik 2015-10-20 09:13:04 +01:00 committed by Tim-Philipp Müller
parent 344d100b1c
commit e0b4290998
1 changed files with 4 additions and 3 deletions
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5
ext/hls/m3u8.c
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@ -583,10 +583,11 @@ gst_m3u8_update (GstM3U8Client * client, GstM3U8 * self, gchar * data,
} else {
self->iframe_lists = g_list_append (self->iframe_lists, new_list);
}
} else if (list != NULL) {
} else {
if (list != NULL) {
GST_WARNING ("Found a list without a uri..., dropping");
gst_m3u8_free (list);
} else {
}
list = new_list;
}
} else if (g_str_has_prefix (data_ext_x, "TARGETDURATION:")) {