CVE-2012-2127

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "70B7C324-8E72-47C7-8117-590FD859DC78", "versionEndIncluding": "3.1.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.1.1:*:*:*:*:*:*:*", "matchCriteriaId": "B155BBDF-6DF6-4FF5-9C41-D8A5266DCC67", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.1.2:*:*:*:*:*:*:*", "matchCriteriaId": "28476DEC-9630-4B40-9D4D-9BC151DC4CA4", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.1.3:*:*:*:*:*:*:*", "matchCriteriaId": "5646880A-2355-4BDD-89E7-825863A0311F", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.1.4:*:*:*:*:*:*:*", "matchCriteriaId": "7FF99148-267A-46F8-9927-A9082269BAF6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.1.5:*:*:*:*:*:*:*", "matchCriteriaId": "A783C083-5D9C-48F9-B5A6-A97A9604FB19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.1.6:*:*:*:*:*:*:*", "matchCriteriaId": "2B817A24-03AC-46CD-BEFA-505457FD2A5D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.1.7:*:*:*:*:*:*:*", "matchCriteriaId": "51CF1BCE-090E-4B70-BA16-ACB74411293B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.1.8:*:*:*:*:*:*:*", "matchCriteriaId": "187AAD67-10D7-4B57-B4C6-00443E246AF3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.1.9:*:*:*:*:*:*:*", "matchCriteriaId": "F341CE88-C5BC-4CDD-9CB5-B6BAD7152E63", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd."}, {"lang": "es", "value": "fs/proc/root.c en las implementaciones de procfs del kernel de Linux anteriores a v3.2 no interactua adecuadamente con las llamadas al sistema de CLONE_NEWPID, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (p\u00e9rdida de referencia y consumo excesivo de memoria), haciendo muchas conexiones a un demonio que usa namespaces PID para aislar a los clientes, como lo demuestra vsftpd."}], "id": "CVE-2012-2127", "lastModified": "2026-06-16T23:41:02.737", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2012-06-21T23:55:02.880", "references": [{"source": "secalert@redhat.com", "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1"}, {"source": "secalert@redhat.com", "url": "http://ubuntu.com/usn/usn-1607-1"}, {"source": "secalert@redhat.com", "url": "http://www.kernel.org/pub/linux/kernel/v3.x/"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2"}, {"source": "secalert@redhat.com", "tags": ["Exploit"], "url": "http://www.openwall.com/lists/oss-security/2012/04/20/25"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2012/04/22/1"}, {"source": 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"secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Vadim Ponomarev for reporting this issue.", "bugzilla": {"description": "kernel: pid namespace leak in kernel 3.0 and 3.1", "id": "815188", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=815188"}, "csaw": false, "cvss": {"cvss_base_score": "4.6", "cvss_scoring_vector": "AV:L/AC:L/Au:S/C:N/I:N/A:C", "status": "draft"}, "details": ["fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd."], "name": "CVE-2012-2127", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 4"}, {"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:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2012-04-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2012-2127\nhttps://nvd.nist.gov/vuln/detail/CVE-2012-2127"], "statement": "This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4, 5, and 6 as they did not backport the upstream commit 423e0ab0 that introduced this issue. This issue did not affect Red Hat Enteprise Linux MRG 2.", "threat_severity": "Moderate"}

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