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{"acknowledgement": "Red Hat would like to thank Andy Lutomirski for reporting this issue.", "affected_release": [{"advisory": "RHSA-2018:1355", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-862.2.3.rt56.806.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2018-05-08T00:00:00Z"}, {"advisory": "RHSA-2018:1318", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-862.2.3.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2018-05-08T00:00:00Z"}, {"advisory": "RHSA-2018:1347", "cpe": "cpe:/o:redhat:rhel_aus:7.2", "package": "kernel-0:3.10.0-327.66.3.el7", "product_name": "Red Hat Enterprise Linux 7.2 Advanced Update Support", "release_date": "2018-05-08T00:00:00Z"}, {"advisory": "RHSA-2018:1347", "cpe": "cpe:/o:redhat:rhel_tus:7.2", "package": "kernel-0:3.10.0-327.66.3.el7", "product_name": "Red Hat Enterprise Linux 7.2 Telco Extended Update Support", "release_date": "2018-05-08T00:00:00Z"}, {"advisory": "RHSA-2018:1347", "cpe": "cpe:/o:redhat:rhel_e4s:7.2", "package": "kernel-0:3.10.0-327.66.3.el7", "product_name": "Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions", "release_date": "2018-05-08T00:00:00Z"}, {"advisory": "RHSA-2018:1348", "cpe": "cpe:/o:redhat:rhel_eus:7.3", "package": "kernel-0:3.10.0-514.48.3.el7", "product_name": "Red Hat Enterprise Linux 7.3 Extended Update Support", "release_date": "2018-05-08T00:00:00Z"}, {"advisory": "RHSA-2018:1345", "cpe": "cpe:/o:redhat:rhel_eus:7.4", "package": "kernel-0:3.10.0-693.25.4.el7", "product_name": "Red Hat Enterprise Linux 7.4 Extended Update Support", "release_date": "2018-05-08T00:00:00Z"}, {"advisory": "RHSA-2018:1524", "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor", "package": "imgbased-0:1.0.16-0.1.el7ev", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 7", "release_date": "2018-05-15T00:00:00Z"}, {"advisory": "RHSA-2018:1524", "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor", "package": "ovirt-node-ng-0:4.2.0-0.20170814.0.el7", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 7", "release_date": "2018-05-15T00:00:00Z"}, {"advisory": "RHSA-2018:1524", "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor", "package": "redhat-release-virtualization-host-0:4.2-3.0.el7", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 7", "release_date": "2018-05-15T00:00:00Z"}, {"advisory": "RHSA-2018:1524", "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor", "package": "redhat-virtualization-host-0:4.2-20180508.0", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 7", "release_date": "2018-05-15T00:00:00Z"}, {"advisory": "RHSA-2018:1711", "cpe": "cpe:/o:redhat:enterprise_linux:6::hypervisor", "package": "rhev-hypervisor7-0:7.3-20180521.1.el6ev", "product_name": "RHEV 3.X Hypervisor and Agents for RHEL-6", "release_date": "2018-05-23T00:00:00Z"}, {"advisory": "RHSA-2018:1710", "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor", "package": "redhat-virtualization-host-0:3.6-20180521.0", "product_name": "RHEV 3.X Hypervisor and Agents for RHEL-7 ELS", "release_date": "2018-05-23T00:00:00Z"}, {"advisory": "RHSA-2018:1711", "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor", "package": "rhev-hypervisor7-0:7.3-20180521.1.el7ev", "product_name": "RHEV 3.X Hypervisor and Agents for RHEL-7 ELS", "release_date": "2018-05-23T00:00:00Z"}], "bugzilla": {"description": "Kernel: KVM: error in exception handling leads to wrong debug stack value", "id": "1566837", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1566837"}, "csaw": true, "cvss3": {"cvss3_base_score": "8.0", "cvss3_scoring_vector": "CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-250", "details": ["kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel's KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.", "A flaw was found in the way the Linux kernel's KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest."], "name": "CVE-2018-1087", "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": "Not affected", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise MRG 2"}, {"cpe": "cpe:/a:redhat:enterprise_linux:7::hypervisor", "fix_state": "Affected", "package_name": "rhev-hypervisor-ng", "product_name": "Red Hat Enterprise Virtualization 3"}, {"cpe": "cpe:/o:redhat:rhev_hypervisor:4", "fix_state": "Affected", "package_name": "rhev-hypervisor-ng", "product_name": "Red Hat Virtualization 4"}], "public_date": "2018-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-1087\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-1087\nhttps://access.redhat.com/security/vulnerabilities/pop_ss"], "statement": "This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG 2.\nThis issue affects the version of the kernel package as shipped with Red Hat Enterprise Linux 7. Future kernel updates for Red Hat Enterprise Linux 7 may address this issue.", "threat_severity": "Important", "upstream_fix": "kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2, kernel 4.17-rc3"}