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Fix for int overflow in voronoi_idx_dec and voronoi_search function

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Added addition and substraction saturation checks

Bug:131875460
Test: poc in bug

Change-Id: Ifb235ebc43f18216773900e56d67b419e87d0e0f
This commit is contained in:
Rajat Kumar 2019-05-03 15:10:50 +05:30 • committed by Ray Essick
parent 07a470cab1
commit 5cc187a97f
1 changed files with 4 additions and 2 deletions
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6
decoder/ixheaacd_avq_dec.c
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@ -122,7 +122,7 @@ VOID ixheaacd_voronoi_search(WORD32 x[], WORD32 y[], WORD32 count, WORD32 *rem1,
ixheaacd_nearest_neighbor_2d(x1, y1, count, rem2);
for (i = 0; i < 8; i++) {
y1[i] += 1;
y1[i] = ixheaacd_add32_sat(y1[i], 1);
}
e0 = e1 = 0;
@ -178,7 +178,9 @@ VOID ixheaacd_voronoi_idx_dec(WORD32 *kv, WORD32 m, WORD32 *y, WORD32 count) {
ptr1 = y;
ptr2 = v;
for (i = 0; i < 8; i++) {
*ptr1++ -= ixheaacd_sat64_32((WORD64)m * (WORD64)*ptr2++);
*ptr1 = ixheaacd_sub32_sat(*ptr1,
ixheaacd_sat64_32((WORD64)m * (WORD64)*ptr2++));
ptr1++;
}
}