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0112-top: Prevent integer overflow in adj_geometry().

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Qualys Security Advisory 1970-01-01 00:00:00 +00:00 committed by Craig Small
parent 34b08eb8ac
commit 74e9d0afe1
1 changed files with 2 additions and 0 deletions
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top/top.c
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@ -1790,8 +1790,10 @@ static void adj_geometry (void) {
Screen_rows = w_rows ? w_rows : INT_MAX;
Pseudo_size = (sizeof(*Pseudo_screen) * ROWMAXSIZ);
} else {
const int max_rows = INT_MAX / (sizeof(*Pseudo_screen) * ROWMAXSIZ);
if (w_cols && w_cols < Screen_cols) Screen_cols = w_cols;
if (w_rows && w_rows < Screen_rows) Screen_rows = w_rows;
if (Screen_rows < 0 || Screen_rows > max_rows) Screen_rows = max_rows;
Pseudo_size = (sizeof(*Pseudo_screen) * ROWMAXSIZ) * Screen_rows;
}
// we'll only grow our Pseudo_screen, never shrink it