ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sat Jun 15 21:47:16 2019 +0200| [ce3b0b9066b433564ed3ee3eed3a1e8f2c0834a1] | committer: Michael Niedermayer
avcodec/loco: Limit lossy parameter so it is sane and does not overflow Fixes: 15248/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LOCO_fuzzer-5087440458481664 Fixes: signed integer overflow: 3 + 2147483647 cannot be represented in type 'int' Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ce3b0b9066b433564ed3ee3eed3a1e8f2c0834a1 --- libavcodec/loco.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/loco.c b/libavcodec/loco.c index 741db3bdce..e8c62b8178 100644 --- a/libavcodec/loco.c +++ b/libavcodec/loco.c @@ -295,6 +295,11 @@ static av_cold int decode_init(AVCodecContext *avctx) avpriv_request_sample(avctx, "LOCO codec version %i", version); } + if (l->lossy > 65536U) { + av_log(avctx, AV_LOG_ERROR, "lossy %i is too large\n", l->lossy); + return AVERROR_INVALIDDATA; + } + l->mode = AV_RL32(avctx->extradata + 4); switch (l->mode) { case LOCO_CYUY2: _______________________________________________ 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".
