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{"cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c mishandles the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF implementations."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en QEMU 7.1.0 a 8.2.1. Register_vfs en hw/pci/pcie_sriov.c maneja mal la situaci\u00f3n en la que un invitado escribe NumVF mayores que TotalVF, lo que provoca un desbordamiento del b\u00fafer en las implementaciones de VF."}], "id": "CVE-2024-26327", "lastModified": "2024-07-03T01:49:38.810", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-02-19T05:15:22.527", "references": [{"source": "cve@mitre.org", "url": "https://lore.kernel.org/all/20240214-reuse-v4-5-89ad093a07f4%40daynix.com/"}, {"source": "cve@mitre.org", "url": "https://security.netapp.com/advisory/ntap-20240419-0010/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:9136", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "qemu-kvm-17:9.0.0-10.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}], "bugzilla": {"description": "QEMU: SR-IOV: improper validation of NumVFs leads to buffer overflow", "id": "2264844", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2264844"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-120", "details": ["An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c mishandles the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF implementations.", "A flaw was found in the SR/IOV emulation support of QEMU. The register_vfs() function in hw/pci/pcie_sriov.c mishandled the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF (Virtual Function) implementations. This flaw allows a malicious guest to crash QEMU and cause a denial of service condition."], "name": "CVE-2024-26327", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qemu-kvm-ma", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "virt:rhel/qemu-kvm", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:advanced_virtualization:8::el8", "fix_state": "Not affected", "package_name": "virt:av/qemu-kvm", "product_name": "Red Hat Enterprise Linux 8 Advanced Virtualization"}], "public_date": "2024-02-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26327\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26327\nhttps://lore.kernel.org/all/20240214-reuse-v4-5-89ad093a07f4@daynix.com/"], "statement": "The `qemu-kvm` versions, as shipped with Red Hat Enterprise Linux 6, 7, 8 and RHEL Advanced Virtualization, are not affected by this CVE as they did not include Single Root I/O Virtualization (SR/IOV) support.", "threat_severity": "Moderate", "upstream_fix": "qemu-kvm 9.0.0"}