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Guide to the Secure Configuration of Red Hat Enterprise Linux 7

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Enable checks on notifier call chains

    Enable this to turn on sanity checking for notifier call chains. This is most useful for kernel developers to make sure that modules properly unreg...
    Rule Low Severity
  • Enable checks on scatter-gather (SG) table operations

    Scatter-gather tables are mechanism used for high performance I/O on DMA devices. Enable this to turn on checks on scatter-gather tables. The conf...
    Rule Low Severity
  • Configure low address space to protect from user allocation

    This is the portion of low virtual memory which should be protected from userspace allocation. This configuration is available from kernel 3.14, bu...
    Rule Medium Severity
  • Disable /dev/kmem virtual device support

    Disable support for the /dev/kmem device. The configuration that was used to build kernel is available at <code>/boot/config-*</code>. To chec...
    Rule Low Severity
  • Harden memory copies between kernel and userspace

    This option checks for obviously wrong memory regions when copying memory to/from the kernel (via copy_to_user() and copy_from_user() functions) by...
    Rule High Severity

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