lgtm On 9/25/19, Michael Niedermayer <mich...@niedermayer.cc> wrote: > Fixes: Infinite loop > Fixes: signed integer overflow: 2147483644 + 16 cannot be represented in > type 'int' > Fixes: > 16169/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5662570416963584 > Fixes: > 16782/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5743163859271680 > Fixes: > 17641/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5711603562971136 > > Found-by: continuous fuzzing process > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > --- > libavcodec/4xm.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/libavcodec/4xm.c b/libavcodec/4xm.c > index 1f4e2aee24..336c651d31 100644 > --- a/libavcodec/4xm.c > +++ b/libavcodec/4xm.c > @@ -525,6 +525,10 @@ static int decode_i_block(FourXContext *f, int16_t > *block) > break; > if (code == 0xf0) { > i += 16; > + if (i >= 64) { > + av_log(f->avctx, AV_LOG_ERROR, "run %d overflow\n", i); > + return 0; > + } > } else { > if (code & 0xf) { > level = get_xbits(&f->gb, code & 0xf); > -- > 2.23.0 > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
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