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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-12-18 02:09:23 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-12-30 15:38:21 +0100 |
| commit | 7bd8ea83a0ba91c9b637536df3438487db001b17 (patch) | |
| tree | 99fe7ec542af638c73724210ec2527b365ab8d39 | |
| parent | 84bc2cea237725de468f53dbba6d53140fae21c5 (diff) | |
| download | ffmpeg-7bd8ea83a0ba91c9b637536df3438487db001b17.tar.gz | |
avcodec/hevc_ps: Check diff_cu_qp_delta_depth
Fixes undefined behavior
Fixes: asan_static-oob_17aa046_582_cov_1577759978_DBLK_G_VIXS_1.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 3281fa892599d71b4dc298a426af8296419cd90e)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/hevc_ps.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavcodec/hevc_ps.c b/libavcodec/hevc_ps.c index ff881ea70d..461bf34c6d 100644 --- a/libavcodec/hevc_ps.c +++ b/libavcodec/hevc_ps.c @@ -1049,6 +1049,14 @@ int ff_hevc_decode_nal_pps(HEVCContext *s) if (pps->cu_qp_delta_enabled_flag) pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb); + if (pps->diff_cu_qp_delta_depth < 0 || + pps->diff_cu_qp_delta_depth > sps->log2_diff_max_min_coding_block_size) { + av_log(s->avctx, AV_LOG_ERROR, "diff_cu_qp_delta_depth %d is invalid\n", + pps->diff_cu_qp_delta_depth); + ret = AVERROR_INVALIDDATA; + goto err; + } + pps->cb_qp_offset = get_se_golomb(gb); if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) { av_log(s->avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n", |