CVE-2016-0728

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el kernel de Linux en versiones anteriores a 4.4.1 no maneja correctamente referencias a objetos en un cierto caso de error, lo que permite a usuarios locales obtener privilegios o provocar una denegaci\u00f3n de servicio (desbordamiento de entero y uso despu\u00e9s de liberaci\u00f3n) a trav\u00e9s de comandos keyctl manipulados."}], "evaluatorComment": "CWE-190: Integer Overflow or Wraparound \n\nCWE-416: Use After Free", "id": "CVE-2016-0728", "lastModified": "2026-06-17T00:38:06.303", "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": 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["Third Party Advisory", "VDB Entry"], "url": "https://www.exploit-db.com/exploits/39277/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Perception Point research team for reporting this issue.", "affected_release": [{"advisory": "RHSA-2016:0065", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-327.4.5.rt56.206.el7_2", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2016-01-25T00:00:00Z"}, {"advisory": "RHSA-2016:0064", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-327.4.5.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2016-01-25T00:00:00Z"}, {"advisory": "RHSA-2016:0103", "cpe": "cpe:/o:redhat:rhel_eus:7.1", "package": "kernel-0:3.10.0-229.26.2.ael7b", "product_name": "Red Hat Enterprise Linux 7.1 Extended Update Support", "release_date": "2016-02-02T00:00:00Z"}, {"advisory": "RHSA-2016:0068", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-1:3.10.0-327.rt56.170.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2016-01-26T00:00:00Z"}], "bugzilla": {"description": "kernel: Possible use-after-free vulnerability in keyring facility", "id": "1297475", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1297475"}, "csaw": true, "cvss": {"cvss_base_score": "7.2", "cvss_scoring_vector": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "status": "verified"}, "cwe": "CWE-416", "details": ["The join_session_keyring function in security/keys/process_keys.c in the Linux kernel before 4.4.1 mishandles object references in a certain error case, which allows local users to gain privileges or cause a denial of service (integer overflow and use-after-free) via crafted keyctl commands.", "A use-after-free flaw was found in the way the Linux kernel's key management subsystem handled keyring object reference counting in certain error path of the join_session_keyring() function. A local, unprivileged user could use this flaw to escalate their privileges on the system."], "name": "CVE-2016-0728", "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"}], "public_date": "2016-01-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-0728\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-0728\nhttps://access.redhat.com/node/2131021"], "statement": "This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5 and 6. \nRefer to https://access.redhat.com/node/2131021 for further information.", "threat_severity": "Important"}

{}