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vt(4): Fix out-of-bounds array access in VT_ACTIVATE ioctl handling
CID: 1229964 MFC after: 3 days
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=271756
@ -2131,7 +2131,7 @@ vtterm_ioctl(struct terminal *tm, u_long cmd, caddr_t data,
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win = *(int *)data - 1;
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DPRINTF(5, "%s%d: VT_ACTIVATE ttyv%d ", SC_DRIVER_NAME,
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VT_UNIT(vw), win);
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if ((win > VT_MAXWINDOWS) || (win < 0))
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if ((win >= VT_MAXWINDOWS) || (win < 0))
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return (EINVAL);
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return (vt_proc_window_switch(vd->vd_windows[win]));
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}
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