ffmpeg | branch: release/3.3 | Michael Niedermayer <mich...@niedermayer.cc> | Tue Dec 26 23:24:44 2017 +0100| [1bc06771d83e2f6b049520dc3a5596ba9766dccb] | committer: Michael Niedermayer
avcodec/flacdec: Fix overflow in multiplication in decode_subframe_fixed() Fixes: signed integer overflow: 2 * 1629495328 cannot be represented in type 'int' Fixes: 4716/clusterfuzz-testcase-minimized-5835915940331520 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 3d23f7a0969bf76ad6dcdc2c4a5cd3ae884745a8) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1bc06771d83e2f6b049520dc3a5596ba9766dccb --- libavcodec/flacdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/flacdec.c b/libavcodec/flacdec.c index 5bbb8ee5b9..3d41a1af7f 100644 --- a/libavcodec/flacdec.c +++ b/libavcodec/flacdec.c @@ -298,7 +298,7 @@ static int decode_subframe_fixed(FLACContext *s, int32_t *decoded, if (pred_order > 2) c = b - decoded[pred_order-2] + decoded[pred_order-3]; if (pred_order > 3) - d = c - decoded[pred_order-2] + 2*decoded[pred_order-3] - decoded[pred_order-4]; + d = c - decoded[pred_order-2] + 2U*decoded[pred_order-3] - decoded[pred_order-4]; switch (pred_order) { case 0: _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
