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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-24 03:15:23 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-30 23:26:03 +0100 |
| commit | 93437a18d878f3924199a3dba5082aa3d09a3094 (patch) | |
| tree | 06b056bca63bfbc1bbe02ab45f012b2f85b76dc2 | |
| parent | d07f78ae726bbc8cde010f530676e53468acfa53 (diff) | |
| download | ffmpeg-93437a18d878f3924199a3dba5082aa3d09a3094.tar.gz | |
avcodec/hevc_ps: Check log2_sao_offset_scale_*
Fixes: 4868/clusterfuzz-testcase-minimized-6236542906400768
Fixes: runtime error: shift exponent 126 is too large for 32-bit type 'int'
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 4a75a75c62efc645ec28444e4675c325b8f2bb1a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/hevc_ps.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/hevc_ps.c b/libavcodec/hevc_ps.c index 902917d4dd..2ab4c34013 100644 --- a/libavcodec/hevc_ps.c +++ b/libavcodec/hevc_ps.c @@ -1324,6 +1324,11 @@ static int pps_range_extensions(GetBitContext *gb, AVCodecContext *avctx, pps->log2_sao_offset_scale_luma = get_ue_golomb_long(gb); pps->log2_sao_offset_scale_chroma = get_ue_golomb_long(gb); + if ( pps->log2_sao_offset_scale_luma > FFMAX(sps->bit_depth - 10, 0) + || pps->log2_sao_offset_scale_chroma > FFMAX(sps->bit_depth_chroma - 10, 0) + ) + return AVERROR_INVALIDDATA; + return(0); } |