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{"descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: Handle SRCU initialization failure during page track init\n\nCheck the return of init_srcu_struct(), which can fail due to OOM, when\ninitializing the page track mechanism. Lack of checking leads to a NULL\npointer deref found by a modified syzkaller.\n\n[Move the call towards the beginning of kvm_arch_init_vm. - Paolo]"}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: x86: Manejar el error de inicializaci\u00f3n de SRCU durante el inicio del seguimiento de la p\u00e1gina. Verifique el retorno de init_srcu_struct(), que puede fallar debido a OOM, al inicializar el mecanismo de seguimiento de la p\u00e1gina. La falta de verificaci\u00f3n conduce a un puntero NULL deref encontrado por un syzkaller modificado. [Mueva la llamada hacia el principio de kvm_arch_init_vm. -Paolo]"}], "id": "CVE-2021-47407", "lastModified": "2024-11-21T06:36:04.980", "metrics": {}, "published": "2024-05-21T15:15:26.247", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4664318f73e496cd22c71b10888e75434a123e23"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/deb2949417677649e2413266d7ce8c2ff73952b4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb7511bf9182292ef1df1082d23039e856d1ddfb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/4664318f73e496cd22c71b10888e75434a123e23"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/deb2949417677649e2413266d7ce8c2ff73952b4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/eb7511bf9182292ef1df1082d23039e856d1ddfb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: KVM: x86: Handle SRCU initialization failure during page track init", "id": "2282329", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282329"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nKVM: x86: Handle SRCU initialization failure during page track init\nCheck the return of init_srcu_struct(), which can fail due to OOM, when\ninitializing the page track mechanism. Lack of checking leads to a NULL\npointer deref found by a modified syzkaller.\n[Move the call towards the beginning of kvm_arch_init_vm. - Paolo]"], "name": "CVE-2021-47407", "package_state": [{"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": "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not 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-2021-47407\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47407\nhttps://lore.kernel.org/linux-cve-announce/2024052151-CVE-2021-47407-fd65@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-12T22:10:02.970677+00:00", "updated": "2025-07-12T22:10:02.970740+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}