ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sat May 6 01:08:54 2017 +0200| [523205ce1ed9415183c162998c68f573479e78fe] | committer: Michael Niedermayer
avcodec/snowdec: Check qbias Fixes: signed integer overflow: -1094995529 * 131 cannot be represented in type 'int' Fixes: 1353/clusterfuzz-testcase-minimized-5208180449607680 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=523205ce1ed9415183c162998c68f573479e78fe --- libavcodec/snowdec.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/snowdec.c b/libavcodec/snowdec.c index 042aecbbeb..97f55288c1 100644 --- a/libavcodec/snowdec.c +++ b/libavcodec/snowdec.c @@ -395,6 +395,11 @@ static int decode_header(SnowContext *s){ s->block_max_depth= 0; return AVERROR_INVALIDDATA; } + if (FFABS(s->qbias) > 127) { + av_log(s->avctx, AV_LOG_ERROR, "qbias %d is too large\n", s->qbias); + s->qbias = 0; + return AVERROR_INVALIDDATA; + } return 0; } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
