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avcodec/h264: update current_sps & sps->new only after the whole slice header decoder and init code finished

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This avoids them being cleared before the full initialization finished

Fixes out of array read
Fixes: asan_heap-oob_f0c5e6_7071_cov_1605985132_mov_h264_aac__Demo_FlagOfOurFathers.mov
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-02-04 02:20:59 +01:00
parent e708424b70
commit 8a3b85f3a7
1 changed files with 3 additions and 2 deletions
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5
libavcodec/h264.c
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@ -3526,9 +3526,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0)
if (h->pps.sps_id != h->current_sps_id ||
h0->sps_buffers[h->pps.sps_id]->new) {
h0->sps_buffers[h->pps.sps_id]->new = 0;
h->current_sps_id = h->pps.sps_id;
h->sps = *h0->sps_buffers[h->pps.sps_id];
if (h->mb_width != h->sps.mb_width ||
@ -4111,6 +4109,9 @@ static int decode_slice_header(H264Context *h, H264Context *h0)
if (h->ref_count[1]) h->er.next_pic = &h->ref_list[1][0];
h->er.ref_count = h->ref_count[0];
h0->au_pps_id = pps_id;
h->sps.new =
h0->sps_buffers[h->pps.sps_id]->new = 0;
h->current_sps_id = h->pps.sps_id;
if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
av_log(h->avctx, AV_LOG_DEBUG,