On Fri, Apr 05, 2019 at 09:54:51AM +0200, Paul B Mahol wrote: > On 4/5/19, Michael Niedermayer <mich...@niedermayer.cc> wrote: > > Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to > > an unsigned type to negate this value to itself > > Fixes: > > 13999/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AGM_fuzzer-5644405991538688 > > > > Found-by: continuous fuzzing process > > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > > --- > > libavcodec/agm.c | 4 +++- > > 1 file changed, 3 insertions(+), 1 deletion(-) > > > > diff --git a/libavcodec/agm.c b/libavcodec/agm.c > > index 2d2092222d..cbd45e8095 100644 > > --- a/libavcodec/agm.c > > +++ b/libavcodec/agm.c > > @@ -535,11 +535,13 @@ static int decode_frame(AVCodecContext *avctx, void > > *data, > > > > s->flags = 0; > > w = bytestream2_get_le32(gbyte); > > + h = bytestream2_get_le32(gbyte); > > + if (w == INT32_MIN || h == INT32_MIN) > > + return AVERROR_INVALIDDATA; > > if (w < 0) { > > w = -w; > > s->flags |= 2; > > } > > - h = bytestream2_get_le32(gbyte); > > if (h < 0) { > > h = -h; > > s->flags |= 1; > > -- > > OK
will apply thanks [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB I have never wished to cater to the crowd; for what I know they do not approve, and what they approve I do not know. -- Epicurus
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