{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2019-14821", "ASSIGNER": "secalert@redhat.com", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-787", "cweId": "CWE-787" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Kernel", "version": { "version_data": [ { "version_affected": "=", "version_value": "all through 5.3" } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://www.oracle.com/security-alerts/cpuapr2020.html", "refsource": "MISC", "name": "https://www.oracle.com/security-alerts/cpuapr2020.html" }, { "url": "http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html", "refsource": "MISC", "name": "http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html" }, { "url": "http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html", "refsource": "MISC", "name": "http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html" }, { "url": "https://access.redhat.com/errata/RHSA-2019:4154", "refsource": "MISC", "name": "https://access.redhat.com/errata/RHSA-2019:4154" }, { "url": "https://access.redhat.com/errata/RHSA-2019:3309", "refsource": "MISC", "name": "https://access.redhat.com/errata/RHSA-2019:3309" }, { "url": "https://access.redhat.com/errata/RHSA-2019:3517", "refsource": "MISC", "name": "https://access.redhat.com/errata/RHSA-2019:3517" }, { "url": "https://access.redhat.com/errata/RHSA-2020:0204", "refsource": "MISC", "name": "https://access.redhat.com/errata/RHSA-2020:0204" }, { "url": "https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html" }, { "url": "https://seclists.org/bugtraq/2019/Nov/11", "refsource": "MISC", "name": "https://seclists.org/bugtraq/2019/Nov/11" }, { "url": "https://usn.ubuntu.com/4157-1/", "refsource": "MISC", "name": "https://usn.ubuntu.com/4157-1/" }, { "url": "https://usn.ubuntu.com/4157-2/", "refsource": "MISC", "name": "https://usn.ubuntu.com/4157-2/" }, { "url": "https://usn.ubuntu.com/4162-1/", "refsource": "MISC", "name": "https://usn.ubuntu.com/4162-1/" }, { "url": "https://usn.ubuntu.com/4162-2/", "refsource": "MISC", "name": "https://usn.ubuntu.com/4162-2/" }, { "url": "https://usn.ubuntu.com/4163-1/", "refsource": "MISC", "name": "https://usn.ubuntu.com/4163-1/" }, { "url": "https://usn.ubuntu.com/4163-2/", "refsource": "MISC", "name": "https://usn.ubuntu.com/4163-2/" }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00036.html", "refsource": "MISC", "name": "http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00036.html" }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00037.html", "refsource": "MISC", "name": "http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00037.html" }, { "url": "http://www.openwall.com/lists/oss-security/2019/09/20/1", "refsource": "MISC", "name": "http://www.openwall.com/lists/oss-security/2019/09/20/1" }, { "url": "https://access.redhat.com/errata/RHSA-2019:3978", "refsource": "MISC", "name": "https://access.redhat.com/errata/RHSA-2019:3978" }, { "url": "https://access.redhat.com/errata/RHSA-2019:3979", "refsource": "MISC", "name": "https://access.redhat.com/errata/RHSA-2019:3979" }, { "url": "https://access.redhat.com/errata/RHSA-2019:4256", "refsource": "MISC", "name": "https://access.redhat.com/errata/RHSA-2019:4256" }, { "url": "https://access.redhat.com/errata/RHSA-2020:0027", "refsource": "MISC", "name": "https://access.redhat.com/errata/RHSA-2020:0027" }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14821", "refsource": "MISC", "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14821" }, { "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00000.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2019/10/msg00000.html" }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRZQQQANZWQMPILZV7OTS3RGGRLLE2Q7/", "refsource": "MISC", "name": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRZQQQANZWQMPILZV7OTS3RGGRLLE2Q7/" }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YW3QNMPENPFEGVTOFPSNOBL7JEIJS25P/", "refsource": "MISC", "name": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YW3QNMPENPFEGVTOFPSNOBL7JEIJS25P/" }, { "url": "https://seclists.org/bugtraq/2019/Sep/41", "refsource": "MISC", "name": "https://seclists.org/bugtraq/2019/Sep/41" }, { "url": "https://security.netapp.com/advisory/ntap-20191004-0001/", "refsource": "MISC", "name": "https://security.netapp.com/advisory/ntap-20191004-0001/" }, { "url": "https://www.debian.org/security/2019/dsa-4531", "refsource": "MISC", "name": "https://www.debian.org/security/2019/dsa-4531" } ] }, "impact": { "cvss": [ { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H", "version": "3.0" } ] } }