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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Intel(R) Processors", "vendor": "n/a", "versions": [{"status": "affected", "version": "See references"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper handling of values for some Intel(R) Processors within Ring 0: Kernel, Hypervisor and Bare Metal OS may allow an escalation of privilege. Authorized adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and require no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (low) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts."}], "id": "CVE-2025-35973", "lastModified": "2026-08-12T20:54:11.500", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 4.5, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "[email protected]", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-35973", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-12T18:46:41.083535Z", "version": "2.0.3"}}]}, "published": "2026-08-11T17:17:43.773", "references": [{"source": "[email protected]", "url": "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01428.html"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-229"}], "source": "[email protected]", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: hypervisor: Intel Processors: Privilege escalation in Ring 0 via improper value handling", "id": "2514104", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2514104"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-266", "details": ["Improper handling of values for some Intel(R) Processors within Ring 0: Kernel, Hypervisor and Bare Metal OS may allow an escalation of privilege. Authorized adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and require no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (low) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts.", "A flaw was found in Intel(R) Processors within Ring 0, affecting the kernel, hypervisor, and bare metal operating systems. Improper handling of values may allow an authorized adversary with privileged user access to perform a local, high-complexity attack. This can lead to an escalation of privilege, potentially resulting in high impact to the confidentiality and integrity of the system."], "mitigation": {"lang": "en:us", "value": "This is a hardware-level vulnerability in the affected Intel processors. There is no code-level fix available in Red Hat OpenShift sandboxed containers or other affected Red Hat components; the issue must be addressed at the processor firmware layer.\nRed Hat recommends that customers apply the latest CPU microcode or system firmware update from their hardware manufacturer. Intel has released microcode updates addressing this issue; see Intel Security Advisory INTEL-SA-01428 (https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01428.html) for affected processor families and update guidance.\nIntel has indicated that a further Trusted Computing Base (TCB) recovery is planned for this issue. Red Hat will update this guidance if additional remediation steps become necessary once that information is available."}, "name": "CVE-2025-35973", "package_state": [{"cpe": "cpe:/a:redhat:confidential_compute_attestation:1", "fix_state": "Affected", "package_name": "openshift-sandboxed-containers/osc-podvm-payload-rhel9", "product_name": "Confidential Compute Attestation"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "libkrun", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "erlang27", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "kata-containers", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-11T16:28:25Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-35973\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-35973\nhttps://intel.com/content/www/us/en/security-center/advisory/intel-sa-01428.html"], "statement": "Red Hat is aware of a hardware vulnerability affecting some Intel processors that could allow a local attacker who already has privileged access to escalate privileges by exploiting improper handling of internal processor values during Ring 0 execution. In the most severe case, this could allow a privileged workload running inside a virtual machine to escalate access into the underlying hypervisor. Exploitation requires local access, existing privileged access, and a high degree of attack complexity, including detailed knowledge of the processor's internal behavior.\nRed Hat products that provide workload isolation using a hypervisor, such as Red Hat OpenShift sandboxed containers (which uses Kata Containers), are assessed as Important severity because of the potential impact on isolation between different tenants' workloads if the underlying processor is vulnerable and has not been updated.", "threat_severity": "Important"}

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