ffmpeg | branch: release/3.1 | Michael Niedermayer <mich...@niedermayer.cc> | Tue May 30 03:13:21 2017 +0200| [ea70971cbe9ffd23cfd0bf519280a131097f8979] | committer: Michael Niedermayer
avcodec/wavpack: Check float_shift Fixes: runtime error: shift exponent 40 is too large for 32-bit type 'unsigned int' Fixes: 1898/clusterfuzz-testcase-minimized-5970744880136192 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 4020b009d1e88ff10abd25fb768165afa546851d) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ea70971cbe9ffd23cfd0bf519280a131097f8979 --- libavcodec/wavpack.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index a679d424eb..3bc345e797 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -872,6 +872,12 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no, s->float_flag = bytestream2_get_byte(&gb); s->float_shift = bytestream2_get_byte(&gb); s->float_max_exp = bytestream2_get_byte(&gb); + if (s->float_shift > 31) { + av_log(avctx, AV_LOG_ERROR, + "Invalid FLOATINFO, shift = %d (> 31)\n", s->float_shift); + s->float_shift = 0; + continue; + } got_float = 1; bytestream2_skip(&gb, 1); break; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
