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codecparsers: h264parser: guard against ref_pic_markings overflow

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1703>
This commit is contained in:
Andrew Wesie 2020-10-16 12:29:02 +01:00 committed by GStreamer Merge Bot
parent 3f8d33abed
commit 11353b3f6e
1 changed files with 7 additions and 3 deletions
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10
gst-libs/gst/codecparsers/gsth264parser.c
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@ -723,13 +723,17 @@ gst_h264_slice_parse_dec_ref_pic_marking (GstH264SliceHdr * slice,
dec_ref_pic_m->n_ref_pic_marking = 0;
while (1) {
refpicmarking =
&dec_ref_pic_m->ref_pic_marking[dec_ref_pic_m->n_ref_pic_marking];
READ_UE (nr, mem_mgmt_ctrl_op);
if (mem_mgmt_ctrl_op == 0)
break;
if (dec_ref_pic_m->n_ref_pic_marking >=
G_N_ELEMENTS (dec_ref_pic_m->ref_pic_marking))
goto error;
refpicmarking =
&dec_ref_pic_m->ref_pic_marking[dec_ref_pic_m->n_ref_pic_marking];
refpicmarking->memory_management_control_operation = mem_mgmt_ctrl_op;
if (mem_mgmt_ctrl_op == 1 || mem_mgmt_ctrl_op == 3)