CVE-2017-2647

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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": "D096AE24-5BB5-4ED2-8D2B-DC2AE8012E40", "versionEndIncluding": "3.17.8", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c."}, {"lang": "es", "value": "El subsistema KEYS en el kernel de Linux en versiones anteriores a 3.18 permite a los usuarios locales obtener privilegios o provocar una denegaci\u00f3n de servicio (referencia a puntero NULL y bloqueo del sistema) a trav\u00e9s de vectores que implican un valor NULL para un cierto campo de coincidencia, relacionado con la funci\u00f3n keyring_search_iterator en keyring.c."}], "id": "CVE-2017-2647", "lastModified": "2026-06-17T01:16:35.130", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-03-31T04:59:00.157", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/97258"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2017:1842"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2017:2077"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2017:2437"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2017:2444"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1428353"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81"}, {"source": "secalert@redhat.com", "url": "https://usn.ubuntu.com/3849-1/"}, {"source": "secalert@redhat.com", "url": "https://usn.ubuntu.com/3849-2/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/97258"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": 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"weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Andrey Ryabinin (Virtuozzo) and Igor Redko (Virtuozzo) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2020:3548", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-754.33.1.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-08-25T00:00:00Z"}, {"advisory": "RHSA-2020:3836", "cpe": "cpe:/o:redhat:rhel_aus:6.6", "package": "kernel-0:2.6.32-504.84.1.el6", "product_name": "Red Hat Enterprise Linux 6.6 Advanced Update Support", "release_date": "2020-09-24T00:00:00Z"}, {"advisory": "RHSA-2017:2077", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-693.rt56.617.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-08-01T00:00:00Z"}, {"advisory": "RHSA-2017:1842", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-693.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-08-01T00:00:00Z"}, {"advisory": "RHSA-2017:2437", "cpe": "cpe:/o:redhat:rhel_eus:7.3", "package": "kernel-0:3.10.0-514.28.1.el7", "product_name": "Red Hat Enterprise Linux 7.3 Extended Update Support", "release_date": "2017-08-08T00:00:00Z"}, {"advisory": "RHSA-2017:2444", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-1:3.10.0-514.rt56.231.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2017-08-08T00:00:00Z"}], "bugzilla": {"description": "kernel: Null pointer dereference in search_keyring", "id": "1428353", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1428353"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-476", "details": ["The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.", "A flaw was found that can be triggered in keyring_search_iterator in keyring.c if type->match is NULL. A local user could use this flaw to crash the system or, potentially, escalate their privileges."], "name": "CVE-2017-2647", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2017-03-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-2647\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-2647"], "statement": "This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 as the code which can trigger the flaw is not present in the products listed.\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6, 7 and MRG-2. Future Linux kernel updates for the respective releases might address this issue.", "threat_severity": "Important"}

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