ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Tue May 9 19:38:46 2017 +0200| [62c5949beca2c95d6af5c74985467438d2295a66] | committer: Michael Niedermayer
avcodec/cllc: Check prefix Fixes: runtime error: left shift of 1610706944 by 1 places cannot be represented in type 'int' Fixes: 1421/clusterfuzz-testcase-minimized-6239947507892224 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=62c5949beca2c95d6af5c74985467438d2295a66 --- libavcodec/cllc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/cllc.c b/libavcodec/cllc.c index e0895d2e1f..77de6e71c7 100644 --- a/libavcodec/cllc.c +++ b/libavcodec/cllc.c @@ -71,6 +71,10 @@ static int read_code_table(CLLCContext *ctx, GetBitContext *gb, VLC *vlc) count++; } + if (prefix > (65535 - 256)/2) { + vlc->table = NULL; + return AVERROR_INVALIDDATA; + } prefix <<= 1; } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
