On Wed, Jul 13, 2022 at 09:49:05AM +0200, Paul B Mahol wrote: > On Tue, Jul 12, 2022 at 8:43 PM Michael Niedermayer <mich...@niedermayer.cc> > wrote: > > > Fixes: out of array access > > Fixes: > > 48799/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LAGARITH_fuzzer-4764457825337344 > > > > Found-by: continuous fuzzing process > > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > > Signed-off-by > > <https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by>: > > Michael Niedermayer <mich...@niedermayer.cc> > > --- > > libavcodec/lagarith.c | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c > > index 3aeb1c8a99..00e8005222 100644 > > --- a/libavcodec/lagarith.c > > +++ b/libavcodec/lagarith.c > > @@ -409,6 +409,9 @@ output_zeros: > > if (zero_run) { > > zero_run = 0; > > i += esc_count; > > + if (i > end - dst || > > + i >= src_end - src) > > + return AVERROR_INVALIDDATA; > > memcpy(dst, src, i); > > dst += i; > > l->zeros_rem = lag_calc_zero_run(src[i]); > > > > LGTM
will apply thx [...] -- 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.
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