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dvdspu: Avoid integer overflow when checking if enough data is available

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4896>
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Sebastian Dröge 2023-06-13 14:25:04 +03:00 committed by GStreamer Marge Bot
parent 7ed446dca9
commit 0dabf0eb00
1 changed files with 2 additions and 1 deletions
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subprojects/gst-plugins-bad/gst/dvdspu/gstspu-pgs.c
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@ -607,7 +607,8 @@ parse_set_object_data (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
PGS_DUMP ("%d bytes of additional RLE data\n", (int) (end - payload));
/* Check that the data chunk is for this object version, and fits in the buffer */
if (obj->rle_data_ver == obj_ver &&
obj->rle_data_used + end - payload <= obj->rle_data_size) {
end - payload <= obj->rle_data_size &&
obj->rle_data_used <= obj->rle_data_size - (end - payload)) {
memcpy (obj->rle_data + obj->rle_data_used, payload, end - payload);
obj->rle_data_used += end - payload;