CVE-2021-47141

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Al liberar bloques de notificaciones, indexamos priv->msix_vectors. Si no pudimos asignar priv->msix_vectors (consulte abort_with_msix_vectors), esto podr\u00eda provocar una desreferencia del puntero NULL si el controlador est\u00e1 descargado."}], "id": "CVE-2021-47141", "lastModified": "2026-06-17T04:16:38.320", "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-2021-47141", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-03-25T18:19:57.763630Z", "version": "2.0.3"}}]}, "published": "2024-03-25T09:15:08.790", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5218e919c8d06279884aa0baf76778a6817d5b93"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5278c75266c5094d3c0958793bf12fc90300e580"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/821149ee88c206fa37e79c1868cc270518484876"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/da21a35c00ff1a1794d4f166d3b3fa8db4d0f6fb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5218e919c8d06279884aa0baf76778a6817d5b93"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5278c75266c5094d3c0958793bf12fc90300e580"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/821149ee88c206fa37e79c1868cc270518484876"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/da21a35c00ff1a1794d4f166d3b3fa8db4d0f6fb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: gve: Add NULL pointer checks when freeing irqs.", "id": "2271481", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2271481"}, "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:\ngve: Add NULL pointer checks when freeing irqs.\nWhen freeing notification blocks, we index priv->msix_vectors.\nIf we failed to allocate priv->msix_vectors (see abort_with_msix_vectors)\nthis could lead to a NULL pointer dereference if the driver is unloaded.", "A vulnerability was found in the Generic Virtual Ethernet (gve) driver in the Linux kernel. A NULL pointer dereference could occur during the freeing of notification blocks. This issue arises when attempting to index priv->msix_vectors without prior allocation, potentially leading to a crash if the driver is unloaded."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, NULL pointer checks have been added to ensure safe handling during the freeing process of notification blocks within the gve driver. It is advised to update the affected package as soon as possible."}, "name": "CVE-2021-47141", "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": "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: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": "2024-03-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47141\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47141\nhttps://lore.kernel.org/linux-cve-announce/2024032557-CVE-2021-47141-ce47@gregkh/T"], "threat_severity": "Moderate"}

{}