On 7/19/19, Michael Niedermayer <mich...@niedermayer.cc> wrote: > On Thu, Jun 27, 2019 at 09:32:44AM +0200, Paul B Mahol wrote: >> On 6/27/19, Michael Niedermayer <mich...@niedermayer.cc> wrote: >> > Fixes: signed integer overflow: 61 + 2147483647 cannot be represented >> > in >> > type 'int' >> > Fixes: >> > 15311/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5742552826773504 >> > >> > Found-by: continuous fuzzing process >> > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg >> > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> >> > --- >> > libavcodec/dxv.c | 2 +- >> > 1 file changed, 1 insertion(+), 1 deletion(-) >> > >> > diff --git a/libavcodec/dxv.c b/libavcodec/dxv.c >> > index 5fd1844094..3506775560 100644 >> > --- a/libavcodec/dxv.c >> > +++ b/libavcodec/dxv.c >> > @@ -745,7 +745,7 @@ static int dxv_decompress_cocg(DXVContext *ctx, >> > GetByteContext *gb, >> > int skip0, skip1, oi0 = 0, oi1 = 0; >> > int ret, state0 = 0, state1 = 0; >> > >> > - if (op_offset < 12) >> > + if (op_offset < 12 || op_offset - 12 > >> > bytestream2_get_bytes_left(gb)) >> > return AVERROR_INVALIDDATA; >> > >> > dst = tex_data; >> > -- >> > 2.22.0 >> > >> > _______________________________________________ >> > 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". >> >> Make sure this does not break any files. > > Do you have any specific files i should test ? > > I of course cannot test every file on earth ...
I'm on vacation, so when I get back I will give you some files. > > Thanks > > [...] > -- > Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB > > If you fake or manipulate statistics in a paper in physics you will never > get a job again. > If you fake or manipulate statistics in a paper in medicin you will get > a job for life at the pharma industry. > _______________________________________________ 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".
