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"vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Philip Pettersson for reporting this issue.", "affected_release": [{"advisory": "RHSA-2017:0387", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-514.10.2.rt56.435.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-03-02T00:00:00Z"}, {"advisory": "RHSA-2017:0386", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-514.10.2.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-03-02T00:00:00Z"}, {"advisory": "RHSA-2017:0402", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-1:3.10.0-514.rt56.215.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2017-03-02T00:00:00Z"}], "bugzilla": {"description": "kernel: Race condition in packet_set_ring leads to use after free", "id": "1400019", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1400019"}, "csaw": false, "cvss": {"cvss_base_score": "6.6", "cvss_scoring_vector": "AV:L/AC:M/Au:S/C:C/I:C/A:C", "status": "verified"}, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-362->CWE-416", "details": ["Race condition in net/packet/af_packet.c in the Linux kernel through 4.8.12 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging the CAP_NET_RAW capability to change a socket version, related to the packet_set_ring and packet_setsockopt functions.", "A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets implementation in the Linux kernel networking subsystem handled synchronization while creating the TPACKET_V3 ring buffer. A local user able to open a raw packet socket (requires the CAP_NET_RAW capability) could use this flaw to elevate their privileges on the system."], "name": "CVE-2016-8655", "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"}], "public_date": "2016-12-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-8655\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-8655"], "statement": "This issue does not affect Red Hat Enterprise Linux 5 and 6.\nThis issue does affect Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG 2. Future updates for the respective releases will address this issue.\nIn a default or common use of Red Hat Enterprise Linux 7 this issue does not allow an unprivileged local user elevate their privileges on the system.\nIn order to exploit this issue the attacker needs CAP_NET_RAW capability, which needs to be granted by the administrator to the attacker's account. Since Red Hat Enterprise Linux 7 does not have unprivileged user namespaces enabled by default, local unprivileged users also cannot abuse namespaces to grant this capability to themselves and elevate their privileges.", "threat_severity": "Important"}