ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Fri Oct 23 20:39:33 2020 +0200| [0dc42147b6843b133d4fa46bf1c2568a837b4bec] | committer: Michael Niedermayer
avcodec/magicyuv: Check slice size before reading flags and pred Fixes: heap-buffer-overflow Fixes: 26487/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MAGICYUV_fuzzer-5742553675333632 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0dc42147b6843b133d4fa46bf1c2568a837b4bec --- libavcodec/magicyuv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/magicyuv.c b/libavcodec/magicyuv.c index ea1f727e5c..f13351e5b5 100644 --- a/libavcodec/magicyuv.c +++ b/libavcodec/magicyuv.c @@ -623,6 +623,9 @@ static int magy_decode_frame(AVCodecContext *avctx, void *data, s->slices[i][j].start = offset + header_size; s->slices[i][j].size = avpkt->size - s->slices[i][j].start; + + if (s->slices[i][j].size < 2) + return AVERROR_INVALIDDATA; } if (bytestream2_get_byteu(&gb) != s->planes) _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
