[FFmpeg-cvslog] avcodec/aacsbr_fixed: Fix integer overflow in sbr_hf_assemble()

[Michael Niedermayer]

ffmpeg | branch: release/2.8 | Michael Niedermayer <michael at niedermayer.cc> | Sat Apr  7 21:55:06 2018 +0200| [01f124da7f797eb62c71ce5e655f81a4867bcbfe] | committer: Michael Niedermayer

avcodec/aacsbr_fixed: Fix integer overflow in sbr_hf_assemble()

Fixes: runtime error: signed integer overflow: 2052929346 + 204817098 cannot be represented in type 'int'

This was missed in b1bef755f617af9685b592d866b3eb7f3c4b02b1
Fixes: 5275/clusterfuzz-testcase-minimized-5367635958038528

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit c837918f50a7bbd6150afd340857ea43fe4717c7)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=01f124da7f797eb62c71ce5e655f81a4867bcbfe
---

 libavcodec/aacsbr_fixed.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/aacsbr_fixed.c b/libavcodec/aacsbr_fixed.c
index 44c899a7f1..2addbafb5f 100644
--- a/libavcodec/aacsbr_fixed.c
+++ b/libavcodec/aacsbr_fixed.c
@@ -574,7 +574,7 @@ static void sbr_hf_assemble(int Y1[38][64][2],
                 int idx = indexsine&1;
                 int A = (1-((indexsine+(kx & 1))&2));
                 int B = (A^(-idx)) + idx;
-                int *out = &Y1[i][kx][idx];
+                unsigned *out = &Y1[i][kx][idx];
                 int shift;
                 unsigned round;