CVE-2020-8428

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{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "904A2E19-D6CD-4C97-B8F4-1F179CC6956C", "versionEndExcluding": "5.5", "versionStartIncluding": "4.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed."}, {"lang": "es", "value": "El archivo fs/namei.c en el kernel de Linux versiones anteriores a 5.5, presenta una vulnerabilidad de uso de la memoria previamente liberada en la funci\u00f3n may_create_in_sticky, que permite a usuarios locales causar una denegaci\u00f3n de servicio (OOPS) u obtener informaci\u00f3n confidencial de la memoria del kernel, tambi\u00e9n se conoce como CID-d0cb50185ae9. Un vector de ataque puede ser una llamada de sistema abierta para un socket del dominio UNIX, si el socket est\u00e1 siendo movido hacia un nuevo directorio padre y su antiguo directorio padre est\u00e1 siendo eliminado."}], "id": "CVE-2020-8428", "lastModified": "2026-06-17T03:26:21.890", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 3.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-01-29T00:15:10.953", "references": [{"source": "cve@mitre.org", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html"}, {"source": "cve@mitre.org", "url": "http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2020/01/28/4"}, {"source": "cve@mitre.org", "url": "http://www.openwall.com/lists/oss-security/2020/02/02/1"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "url": 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{"bugzilla": {"description": "kernel: use-after-free in fs/namei.c", "id": "1796939", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1796939"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.2", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.", "A flaw was found in the Linux kernel. The may_create_in_sticky in fs/namei.c function has a possible use-after-free which can allow a local user to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory. The highest threat from this vulnerability is to system availability."], "name": "CVE-2020-8428", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"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-alt", "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:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2020-01-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-8428\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-8428"], "threat_severity": "Moderate"}

{}