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{"acknowledgement": "Red Hat would like to thank Dmitry Vyukov (Google engineering) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2018:0152", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-693.17.1.rt56.636.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2018-01-25T00:00:00Z"}, {"advisory": "RHSA-2018:0151", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-693.17.1.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2018-01-25T00:00:00Z"}, {"advisory": "RHSA-2018:0181", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-1:3.10.0-693.17.1.rt56.604.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2018-01-25T00:00:00Z"}], "bugzilla": {"description": "kernel: local privesc in key management", "id": "1284450", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1284450"}, "csaw": false, "cvss": {"cvss_base_score": "7.2", "cvss_scoring_vector": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "status": "verified"}, "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-667", "details": ["The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.", "A flaw was found in the Linux kernel's key management system where it was possible for an attacker to escalate privileges or crash the machine. If a user key gets negatively instantiated, an error code is cached in the payload area. A negatively instantiated key may be then be positively instantiated by updating it with valid data. However, the ->update key type method must be aware that the error code may be there."], "name": "CVE-2015-8539", "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": "2015-12-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2015-8539\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-8539\nhttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd"], "statement": "This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 4 and 5. This issue does affect the kernels shipped with Red Hat Enterprise Linux 6, 7, MRG-2 and realtime kernels and plans to be addressed in a future update.", "threat_severity": "Important"}