ffmpeg | branch: release/3.3 | Michael Niedermayer <mich...@niedermayer.cc> | Thu May 25 16:35:40 2017 +0200| [190787a026308006f67a269da35d1850375c4746] | committer: Michael Niedermayer
avcodec/diracdec: Fix off by 1 error in quant check Fixes: out of array read Fixes: 1781/clusterfuzz-testcase-minimized-4617176877105152 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit b946bd8ef2c7aeee09469a4901182a44f9b67189) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=190787a026308006f67a269da35d1850375c4746 --- libavcodec/diracdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index 3573298ca1..39f062eb8e 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -823,7 +823,7 @@ static int decode_hq_slice(DiracContext *s, DiracSlice *slice, uint8_t *tmp_buf) skip_bits_long(gb, 8*s->highquality.prefix_bytes); quant_idx = get_bits(gb, 8); - if (quant_idx > DIRAC_MAX_QUANT_INDEX) { + if (quant_idx > DIRAC_MAX_QUANT_INDEX - 1) { av_log(s->avctx, AV_LOG_ERROR, "Invalid quantization index - %i\n", quant_idx); return AVERROR_INVALIDDATA; } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
