ffmpeg | branch: release/2.0 | Michael Niedermayer <michae...@gmx.at> | Tue Oct 28 02:14:41 2014 +0100| [2cf83677b31453868b090e898bb66809b8d18b63] | committer: Michael Niedermayer
avcodec/dirac_arith: fix integer overflow Fixes: asan_heap-oob_1078676_9_008.drc Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michae...@gmx.at> (cherry picked from commit 39680caceebfc6abf09b17032048752c014e57a8) Signed-off-by: Michael Niedermayer <michae...@gmx.at> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2cf83677b31453868b090e898bb66809b8d18b63 --- libavcodec/dirac_arith.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/dirac_arith.h b/libavcodec/dirac_arith.h index 089c71a..a1fa96b 100644 --- a/libavcodec/dirac_arith.h +++ b/libavcodec/dirac_arith.h @@ -171,6 +171,10 @@ static inline int dirac_get_arith_uint(DiracArith *c, int follow_ctx, int data_c { int ret = 1; while (!dirac_get_arith_bit(c, follow_ctx)) { + if (ret >= 0x40000000) { + av_log(NULL, AV_LOG_ERROR, "dirac_get_arith_uint overflow\n"); + return -1; + } ret <<= 1; ret += dirac_get_arith_bit(c, data_ctx); follow_ctx = ff_dirac_next_ctx[follow_ctx]; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
