On Mon, Apr 19, 2021 at 08:23:41PM +0200, Michael Niedermayer wrote: > Fixes: signed integer overflow: 32 + 2147483647 cannot be represented in type > 'int > Fixes: > 32967/clusterfuzz-testcase-minimized-ffmpeg_dem_WTV_fuzzer-5132856218222592 > > Found-by: continuous fuzzing process > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > --- > libavformat/wtvdec.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/libavformat/wtvdec.c b/libavformat/wtvdec.c > index 44ca86d517..2f1b192cea 100644 > --- a/libavformat/wtvdec.c > +++ b/libavformat/wtvdec.c > @@ -809,7 +809,7 @@ static int parse_chunks(AVFormatContext *s, int mode, > int64_t seekts, int *len_p > avio_skip(pb, 12); > ff_get_guid(pb, &formattype); > size = avio_rl32(pb); > - if (size < 0 || size > INT_MAX - 92) > + if (size < 0 || size > INT_MAX - 92 - consumed) > return AVERROR_INVALIDDATA; > parse_media_type(s, 0, sid, mediatype, subtype, formattype, > size); > consumed += 92 + size; > @@ -825,7 +825,7 @@ static int parse_chunks(AVFormatContext *s, int mode, > int64_t seekts, int *len_p > avio_skip(pb, 12); > ff_get_guid(pb, &formattype); > size = avio_rl32(pb); > - if (size < 0 || size > INT_MAX - 76) > + if (size < 0 || size > INT_MAX - 76 - consumed) > return AVERROR_INVALIDDATA; > parse_media_type(s, s->streams[stream_index], sid, > mediatype, subtype, formattype, size); > consumed += 76 + size; > --
please apply -- Peter (A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
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