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XCCDF
Red Hat Enterprise Linux 9 Security Technical Implementation Guide
SRG-OS-000480-GPOS-00227
RHEL 9 must clear the page allocator to prevent use-after-free attacks.
RHEL 9 must clear the page allocator to prevent use-after-free attacks.
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RHEL 9 must clear the page allocator to prevent use-after-free attacks.
Medium Severity
<VulnDiscussion>Poisoning writes an arbitrary value to freed pages, so any modification or reference to that page after being freed or before being initialized will be detected and prevented. This prevents many types of use-after-free vulnerabilities at little performance cost. Also prevents leak of data and detection of corrupted memory. Satisfies: SRG-OS-000480-GPOS-00227, SRG-OS-000134-GPOS-00068</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>