On Fri, Jul 19, 2019 at 03:36:43PM +0200, Paul B Mahol wrote: > 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.
ok, ill wait, no hurry, enjoy your vacation! Thanks! [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Frequently ignored answer#1 FFmpeg bugs should be sent to our bugtracker. User questions about the command line tools should be sent to the ffmpeg-user ML. And questions about how to use libav* should be sent to the libav-user ML.
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