CVE-2011-4110

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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:2.6:*:*:*:*:*:*:*", "matchCriteriaId": "0FC560CC-F785-42D5-A25B-1BA02E7AC464", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The user_update function in security/keys/user_defined.c in the Linux kernel 2.6 allows local users to cause a denial of service (NULL pointer dereference and kernel oops) via vectors related to a user-defined key and \"updating a negative key into a fully instantiated key.\""}, {"lang": "es", "value": "La funci\u00f3n user_update security/keys/user_defined.c en el kernel de Linux v2.6 permite a usuarios locales provocar una denegaci\u00f3n de servicio (desreferencia de puntero a NULL y fallo del kernel) a trav\u00e9s de vectores relacionados con una clave definida por el usuario y la \"actualizaci\u00f3n de una clave negativa en una clave completamente instanciada\"."}], "id": "CVE-2011-4110", "lastModified": "2026-06-16T23:34:26.707", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2012-01-27T15:55:04.360", "references": [{"source": "secalert@redhat.com", "url": "http://marc.info/?l=bugtraq&m=139447903326211&w=2"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/47754"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2011/11/21/19"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2011/11/22/5"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2011/11/22/6"}, {"source": "secalert@redhat.com", "url": "http://www.securityfocus.com/bid/50755"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1324-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1328-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1344-1"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=751297"}, {"source": "secalert@redhat.com", "tags": ["Exploit"], "url": "https://lkml.org/lkml/2011/11/15/363"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://marc.info/?l=bugtraq&m=139447903326211&w=2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://secunia.com/advisories/47754"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2011/11/21/19"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2011/11/22/5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2011/11/22/6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/50755"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-1324-1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-1328-1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-1344-1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=751297"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit"], "url": "https://lkml.org/lkml/2011/11/15/363"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-264"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2011:1479", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "kernel-0:2.6.18-274.12.1.el5", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2011-11-29T00:00:00Z"}, {"advisory": "RHSA-2011:1530", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-220.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2011-12-05T00:00:00Z"}, {"advisory": "RHSA-2012:0116", "cpe": "cpe:/o:redhat:rhel_eus:6.1", "package": "kernel-0:2.6.32-131.25.1.el6", "product_name": "Red Hat Enterprise Linux 6.1 EUS - Server Only", "release_date": "2012-02-15T00:00:00Z"}, {"advisory": "RHSA-2012:0010", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-0:2.6.33.9-rt31.79.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2012-01-10T00:00:00Z"}, {"advisory": "RHSA-2012:0333", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-0:3.0.18-rt34.53.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2012-02-23T00:00:00Z"}], "bugzilla": {"description": "kernel: keys: NULL pointer deref in the user-defined key type", "id": "751297", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=751297"}, "csaw": false, "cvss": {"cvss_base_score": "4.9", "cvss_scoring_vector": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "status": "verified"}, "cwe": "CWE-476", "details": ["The user_update function in security/keys/user_defined.c in the Linux kernel 2.6 allows local users to cause a denial of service (NULL pointer dereference and kernel oops) via vectors related to a user-defined key and \"updating a negative key into a fully instantiated key.\""], "name": "CVE-2011-4110", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 4"}], "public_date": "2011-11-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-4110\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-4110"], "statement": "This issue affects the Linux kernel as shipped with Red Hat Enterprise Linux 4,\n5, 6, and Red Hat Enterprise MRG. This has been addressed in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-1479.html, https://rhn.redhat.com/errata/RHSA-2011-1530.html, and https://rhn.redhat.com/errata/RHSA-2012-0010.html. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates.", "threat_severity": "Moderate"}

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