avcodec/aacdec_templat: Fix integer overflow in apply_ltp()
authorMichael Niedermayer <michael@niedermayer.cc>
Sun, 18 Feb 2018 15:55:52 +0000 (16:55 +0100)
committerMichael Niedermayer <michael@niedermayer.cc>
Tue, 27 Feb 2018 18:59:58 +0000 (19:59 +0100)
Fixes: signed integer overflow: -1625276744 + -1041893960 cannot be represented in type 'int'
Fixes: 5948/clusterfuzz-testcase-minimized-5791479856365568

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 33fe17bdc88d51a8e0c87aa1e8011aaaf38a7a90)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/aacdec_template.c

index 3cb8f32..f21d215 100644 (file)
@@ -2496,7 +2496,7 @@ static void apply_ltp(AACContext *ac, SingleChannelElement *sce)
         for (sfb = 0; sfb < FFMIN(sce->ics.max_sfb, MAX_LTP_LONG_SFB); sfb++)
             if (ltp->used[sfb])
                 for (i = offsets[sfb]; i < offsets[sfb + 1]; i++)
-                    sce->coeffs[i] += predFreq[i];
+                    sce->coeffs[i] += (UINTFLOAT)predFreq[i];
     }
 }