On Thu, Jun 13, 2019 at 10:27:00PM +1000, Peter Ross wrote: > On Thu, Jun 13, 2019 at 01:20:19AM +0200, Michael Niedermayer wrote: > > Fixes: left shift of negative value -14614752 > > Fixes: > > 15174/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5670543606415360 > > > > 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 | 5 +++-- > > 1 file changed, 3 insertions(+), 2 deletions(-) > > > > diff --git a/libavformat/wtvdec.c b/libavformat/wtvdec.c > > index 890db2e705..706e8ca38d 100644 > > --- a/libavformat/wtvdec.c > > +++ b/libavformat/wtvdec.c > > @@ -149,7 +149,7 @@ static int read_ints(AVIOContext *pb, uint32_t *data, > > int count) > > * @param depth File allocation table depth > > * @return NULL on error > > */ > > -static AVIOContext * wtvfile_open_sector(int first_sector, uint64_t > > length, int depth, AVFormatContext *s) > > +static AVIOContext * wtvfile_open_sector(unsigned first_sector, uint64_t > > length, int depth, AVFormatContext *s) > > { > > AVIOContext *pb; > > WtvFile *wf; > > @@ -957,7 +957,8 @@ static int parse_chunks(AVFormatContext *s, int mode, > > int64_t seekts, int *len_p > > static int read_header(AVFormatContext *s) > > { > > WtvContext *wtv = s->priv_data; > > - int root_sector, root_size; > > + unsigned root_sector; > > + int root_size; > > uint8_t root[WTV_SECTOR_SIZE]; > > AVIOContext *pb; > > int64_t timeline_pos; > > ok, i see how that can happen on 32-bit. > please push.
will apply thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Freedom in capitalist society always remains about the same as it was in ancient Greek republics: Freedom for slave owners. -- Vladimir Lenin
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