Michael Niedermayer: > Fixes: out of array read in the chroma plane > Fixes: > 428034092/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_DEC_fuzzer-5582608941776896.test > > Found-by: continuous fuzzing process > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > --- > libavcodec/mpegvideo_dec.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/libavcodec/mpegvideo_dec.c b/libavcodec/mpegvideo_dec.c > index 4a54f6cd614..85e24c667e3 100644 > --- a/libavcodec/mpegvideo_dec.c > +++ b/libavcodec/mpegvideo_dec.c > @@ -557,7 +557,7 @@ static av_always_inline void > mpeg_motion_lowres(MpegEncContext *s, > ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x; > > if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, > 0) || uvsrc_y<0 || > - (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - > FFMAX(h, hc<<s->chroma_y_shift), 0)) { > + (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - > FFMAX(h, field_select + hc<<s->chroma_y_shift), 0)) { > s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y, > linesize >> field_based, linesize >> > field_based, > 17, 17 + field_based,
Is lowres actually used for mpegvideo-decoders at all (in 2025)? - Andreas _______________________________________________ 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".
