CVE-2018-18281

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eb66ae030829605d61fbef1909ce310e29f78821", "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eb66ae030829605d61fbef1909ce310e29f78821", "tags": ["Patch", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.135", "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.135", "tags": ["Patch", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.16", "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.16", "tags": ["Patch", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.78", "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.78", "tags": ["Patch", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1695", "name": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1695", "tags": ["Exploit", "Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "http://www.openwall.com/lists/oss-security/2018/10/29/5", "name": "[oss-security] 20181029 Linux kernel: TLB flush happens too late on mremap (CVE-2018-18281; fixed in 4.9.135, 4.14.78, 4.18.16, 4.19)", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "http://packetstormsecurity.com/files/150001/Linux-mremap-TLB-Flush-Too-Late.html", "name": "http://packetstormsecurity.com/files/150001/Linux-mremap-TLB-Flush-Too-Late.html", "tags": ["Patch", "Third Party Advisory", "VDB Entry"], "refsource": "MISC"}, {"url": "http://www.securityfocus.com/bid/105761", "name": "105761", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "BID"}, {"url": "https://usn.ubuntu.com/3832-1/", "name": "USN-3832-1", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3835-1/", "name": "USN-3835-1", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "http://www.securityfocus.com/bid/106503", "name": "106503", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "BID"}, {"url": "https://usn.ubuntu.com/3871-1/", "name": "USN-3871-1", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3880-2/", "name": "USN-3880-2", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3871-4/", "name": "USN-3871-4", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3871-3/", "name": "USN-3871-3", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3880-1/", "name": "USN-3880-1", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3871-5/", "name": "USN-3871-5", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html", "name": "[debian-lts-announce] 20190315 [SECURITY] [DLA 1715-1] linux-4.9 security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html", "name": "[debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html", "name": "[debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://access.redhat.com/errata/RHSA-2019:0831", "name": "RHSA-2019:0831", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2019:2043", "name": "RHSA-2019:2043", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2019:2029", "name": "RHSA-2019:2029", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2020:0036", "name": "RHSA-2020:0036", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2020:0100", "name": "RHSA-2020:0100", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2020:0103", "name": "RHSA-2020:0103", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2020:0179", "name": "RHSA-2020:0179", "tags": [], "refsource": "REDHAT"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-459"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2018-18281", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.6, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}}, "publishedDate": "2018-10-30T18:29Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.9.135", "versionStartIncluding": "3.2"}, {"cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.19", "versionStartIncluding": "4.18.17"}, {"cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.18.16", "versionStartIncluding": "4.14.79"}, {"cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.14.78", "versionStartIncluding": "4.9.136"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2020-08-24T17:37Z"}