CVE-2021-47167

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Tambi\u00e9n cambie la prueba en nfs_pageio_do_add_request() para que sea m\u00e1s s\u00f3lida verificando si la lista est\u00e1 vac\u00eda o no en lugar de confiar en el valor de pg_count."}], "id": "CVE-2021-47167", "lastModified": "2026-06-17T04:16:48.933", "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-2021-47167", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T15:54:37.991848Z", "version": "2.0.3"}}]}, "published": "2024-03-25T10:15:08.720", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/15ac6f14787649e8ebd75c142e2c5d2a243c8490"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1fc5f4eb9d31268ac3ce152d74ad5501ad24ca3e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/56517ab958b7c11030e626250c00b9b1a24b41eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ee21cd3aa8548e0cbc8c67a80b62113aedd2d101"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/15ac6f14787649e8ebd75c142e2c5d2a243c8490"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1fc5f4eb9d31268ac3ce152d74ad5501ad24ca3e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/56517ab958b7c11030e626250c00b9b1a24b41eb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ee21cd3aa8548e0cbc8c67a80b62113aedd2d101"}], "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: NFS: Fix an Oopsable condition in __nfs_pageio_add_request()", "id": "2271433", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2271433"}, "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-99", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nNFS: Fix an Oopsable condition in __nfs_pageio_add_request()\nEnsure that nfs_pageio_error_cleanup() resets the mirror array contents,\nso that the structure reflects the fact that it is now empty.\nAlso change the test in nfs_pageio_do_add_request() to be more robust by\nchecking whether or not the list is empty rather than relying on the\nvalue of pg_count.", "A vulnerability was found in the NFS module of the Linux kernel, where a potential system crash (Oops) occurred due to improper handling of the mirror array in __nfs_pageio_add_request(). The nfs_pageio_error_cleanup() function did not correctly reset the mirror array, leading to inconsistencies when the structure was empty."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2021-47167", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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-2021-47167\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47167\nhttps://lore.kernel.org/linux-cve-announce/2024032535-CVE-2021-47167-c68c@gregkh/T"], "threat_severity": "Moderate"}

{}