[FFmpeg-devel] [PATCH 1/3] avcodec/evc_ps: Check chroma_format_idc

[Michael Niedermayer]

On Fri, Oct 13, 2023 at 01:18:27AM +0100, Kieran Kunhya wrote:
> On Fri, 13 Oct 2023 at 00:28, Michael Niedermayer <michael at niedermayer.cc>
> wrote:
> 
> > Fixes: out of array access
> > Fixes:
> > 62678/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4858264984354816
> >
> > 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 <michael at niedermayer.cc>
> > ---
> >  libavcodec/evc_ps.c | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/libavcodec/evc_ps.c b/libavcodec/evc_ps.c
> > index c11b92d1c5..19895d404d 100644
> > --- a/libavcodec/evc_ps.c
> > +++ b/libavcodec/evc_ps.c
> > @@ -179,6 +179,10 @@ int ff_evc_parse_sps(GetBitContext *gb, EVCParamSets
> > *ps)
> >      // 2 - 4:2:2
> >      // 3 - 4:4:4
> >      sps->chroma_format_idc = get_ue_golomb_31(gb);
> > +    if (sps->chroma_format_idc > 3) {
> > +        ret = AVERROR_INVALIDDATA;
> > +        goto fail;
> > +    }
> >
> >      sps->pic_width_in_luma_samples = get_ue_golomb_long(gb);
> >      sps->pic_height_in_luma_samples = get_ue_golomb_long(gb);
> > --
> > 2.17.1
> >
> 
> ok

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.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 195 bytes
Desc: not available
URL: <https://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20231016/bcf6835e/attachment.sig>