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During specific device read operations, if certain conditions are met, the driver may attempt to access a NULL pointer because this unnecessary field is being retained, which can lead to system crashes or instability."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2021-47385", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47385\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47385\nhttps://lore.kernel.org/linux-cve-announce/2024052144-CVE-2021-47385-a7e7@gregkh/T"], "statement": "This vulnerability is rated as a Moderate severity because it can cause crashes and operational disruptions. It does not expose sensitive information or allow unauthorized access.\nWithin regulated environments, a combination of the following controls acts as a significant barrier to successfully exploiting a CWE-476: NULL Pointer Dereference vulnerability and downgrades the severity of this particular CVE from Moderate to Low.\nThe platform incorporates secure engineering principles and controls to enforce secure coding practices, including proper memory handling and error checking, reducing the likelihood of NULL pointer dereference vulnerabilities. Coding standards, tools, and processes support early detection and prevention of memory-related flaws. Static code analysis identifies NULL dereference and related issues during development, while system monitoring detects memory errors and anomalous behavior in the event of exploitation. Additionally, the platform leverages memory protection mechanisms such as Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) to strengthen resilience against memory-related vulnerabilities.", "threat_severity": "Moderate"}

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