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avcodec/vdpau_hevc: Fix potential out-of-bounds write

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The maximum number of references is 16, so the index value cannot
exceed 15.

Fixes Coverity CID 1348139, 1348140, 1348141

(cherry picked from commit 4e6d1c1f4ec83000a067ff14452b34c1f2d2a43a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Philip Langdale 2016-11-30 16:13:14 -08:00 committed by Michael Niedermayer
parent 95594b9815
commit 9c7730417d
1 changed files with 1 additions and 1 deletions
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2
libavcodec/vdpau_hevc.c
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@ -245,7 +245,7 @@ static int vdpau_hevc_start_frame(AVCodecContext *avctx,
const HEVCFrame *frame = &h->DPB[i];
if (frame != h->ref && (frame->flags & (HEVC_FRAME_FLAG_LONG_REF |
HEVC_FRAME_FLAG_SHORT_REF))) {
if (j > 16) {
if (j > 15) {
av_log(avctx, AV_LOG_WARNING,
"VDPAU only supports up to 16 references in the DPB. "
"This frame may not be decoded correctly.\n");