CVE-2026-43351

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Got to love this stuff.\n\nSolve it by moving all the static initialisation early, and make\nsure that if we fail halfway, we're in a reasonable shape to\nperform the rest of the teardown. While at it, reset the vgic model\non failure, just in case..."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nKVM: arm64: Inicializar de forma anticipada dist/redist de vgic en la creaci\u00f3n de vgic\n\nSi vgic_allocate_private_irqs_locked() falla por alguna raz\u00f3n extra\u00f1a, salimos de kvm_vgic_create() prematuramente, dejando dist -> rd_regions sin inicializar.\n\nkvm_vgic_dist_destroy() entonces aparece y se mete en un l\u00edo intentando liberar los RDs. Hay que amar estas cosas.\n\nResolverlo moviendo toda la inicializaci\u00f3n est\u00e1tica de forma anticipada, y asegurar que si fallamos a mitad de camino, estemos en un estado razonable para realizar el resto del desmantelamiento. Ya que estamos, reiniciar el modelo vgic en caso de fallo, por si acaso..."}], "id": "CVE-2026-43351", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43351", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:36:17.157861Z", "version": "2.0.3"}}]}, "published": "2026-05-08T15:16:45.830", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a24f1d80fbcdbf8b2a7044a00fa12b3972b4c31c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ac6769c8f948dff33265c50e524aebf9aa6f1be0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b7493f48c3dba75674a4ee505b4afa8fe5102457"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: KVM: arm64: Eagerly init vgic dist/redist on vgic creation", "id": "2468204", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468204"}, "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": "draft"}, "cwe": "CWE-824", "details": ["A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) for arm64 architectures. When a virtual Generic Interrupt Controller (GIC) is created, a failure in the `vgic_allocate_private_irqs_locked()` function can leave internal data structures uninitialized. This can lead to a system crash when the KVM module attempts to free these uninitialized regions, resulting in a denial of service."], "name": "CVE-2026-43351", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43351\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43351\nhttps://lore.kernel.org/linux-cve-announce/2026050820-CVE-2026-43351-da54@gregkh/T"], "threat_severity": "Moderate"}

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