Fixes: undefined shift Fixes: runtime error: shift exponent 264 is too large for 32-bit type 'int' Fixes: 2860/clusterfuzz-testcase-minimized-4672811689836544
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/diracdec.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index f2837aca69..be8b282314 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -1161,6 +1161,11 @@ static int dirac_unpack_prediction_parameters(DiracContext *s) s->globalmc[ref].perspective[0] = dirac_get_se_golomb(gb); s->globalmc[ref].perspective[1] = dirac_get_se_golomb(gb); } + if (s->globalmc[ref].perspective_exp + (uint64_t)s->globalmc[ref].zrs_exp > 30) { + av_log(s->avctx, AV_LOG_ERROR, "exp %d %d too large\n", s->globalmc[ref].perspective_exp, s->globalmc[ref].zrs_exp); + return AVERROR_INVALIDDATA; + } + } } -- 2.14.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
