"9.1.1.43 P Reference Distance (REFDIST)"
"The value of REFDIST shall be less than, or equal to, 16."
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavcodec/vc1.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c
index e102b931d8..42bfca55b1 100644
--- a/libavcodec/vc1.c
+++ b/libavcodec/vc1.c
@@ -933,7 +933,9 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v,
GetBitContext* gb)
else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type !=
AV_PICTURE_TYPE_BI)) {
v->refdist = get_bits(gb, 2);
if (v->refdist == 3)
- v->refdist += get_unary(gb, 0, 16);
+ v->refdist += get_unary(gb, 0, 14);
+ if (v->refdist > 16)
+ return AVERROR_INVALIDDATA;
}
if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type ==
AV_PICTURE_TYPE_BI)) {
if (read_bfraction(v, gb) < 0)
--
2.23.0
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
