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{"acknowledgement": "Red Hat would like to thank Fan Wu (University of Hong Kong), Haoran Qiu (University of Hong Kong), Heming Cui (University of Hong Kong), and Shixiong Zhao (University of Hong Kong) 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: Null pointer dereference due to incorrect node-splitting in assoc_array implementation", "id": "1501215", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1501215"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-476", "details": ["The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations.", "A flaw was found in the Linux kernel's implementation of associative arrays introduced in 3.13. This functionality was backported to the 3.10 kernels in Red Hat Enterprise Linux 7. The flaw involved a null pointer dereference in assoc_array_apply_edit() due to incorrect node-splitting in assoc_array implementation. This affects the keyring key type and thus key addition and link creation operations may cause the kernel to panic."], "name": "CVE-2017-12193", "package_state": [{"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:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2017-11-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-12193\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-12193"], "statement": "This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6.\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7,MRG-2 and realtime kernels. Future Linux kernel updates for the respective releases may address this issue.", "threat_severity": "Moderate"}