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| author | Luca Barbato <lu_zero@gentoo.org> | 2014-01-11 11:32:07 +0100 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2014-02-01 17:04:49 +0100 |
| commit | 816e5b997028c8215c804b1e58b2388592ed612b (patch) | |
| tree | f6f0637511d612a733a2cd868c16efcedd12071a | |
| parent | 09e2203b8ba6943d5c0fe6d73b65b145c3fdf98e (diff) | |
| download | ffmpeg-816e5b997028c8215c804b1e58b2388592ed612b.tar.gz | |
hevc: Reject impossible slice segment
A dependent slice cannot have address 0.
Prevent an out of array bound load in ff_hevc_cabac_init().
Sample-Id: 00001406-google
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
| -rw-r--r-- | libavcodec/hevc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/hevc.c b/libavcodec/hevc.c index 859b2abade..bc89b17f26 100644 --- a/libavcodec/hevc.c +++ b/libavcodec/hevc.c @@ -779,6 +779,11 @@ static int hls_slice_header(HEVCContext *s) sh->slice_ctb_addr_rs = sh->slice_segment_addr; + if (!s->sh.slice_ctb_addr_rs && s->sh.dependent_slice_segment_flag) { + av_log(s->avctx, AV_LOG_ERROR, "Impossible slice segment.\n"); + return AVERROR_INVALIDDATA; + } + s->HEVClc.first_qp_group = !s->sh.dependent_slice_segment_flag; if (!s->pps->cu_qp_delta_enabled_flag) |