Red Hat Enterprise Linux 9 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must disable virtual system calls.
<VulnDiscussion>System calls are special routines in the Linux kernel, which userspace applications ask to do privileged tasks. Invoking a sy...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must clear the page allocator to prevent use-after-free attacks.
<VulnDiscussion>Poisoning writes an arbitrary value to freed pages, so any modification or reference to that page after being freed or before...Rule Medium Severity -
SRG-OS-000433-GPOS-00192
<GroupDescription></GroupDescription>Group -
RHEL 9 must clear SLUB/SLAB objects to prevent use-after-free attacks.
<VulnDiscussion>Some adversaries launch attacks with the intent of executing code in nonexecutable regions of memory or in memory locations t...Rule Medium Severity -
SRG-OS-000433-GPOS-00193
<GroupDescription></GroupDescription>Group -
RHEL 9 must enable mitigations against processor-based vulnerabilities.
<VulnDiscussion>Kernel page-table isolation is a kernel feature that mitigates the Meltdown security vulnerability and hardens the kernel aga...Rule Low Severity -
SRG-OS-000037-GPOS-00015
<GroupDescription></GroupDescription>Group -
RHEL 9 must enable auditing of processes that start prior to the audit daemon.
<VulnDiscussion>Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events r...Rule Low Severity
Node 2
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