CVE-2018-20856

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138ca24", "name": "https://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138ca24", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24", "name": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7", "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7", "tags": ["Mailing List", "Release Notes", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://usn.ubuntu.com/4094-1/", "name": "USN-4094-1", "tags": [], "refsource": "UBUNTU"}, {"url": "https://www.debian.org/security/2019/dsa-4497", "name": "DSA-4497", "tags": [], "refsource": "DEBIAN"}, {"url": "https://seclists.org/bugtraq/2019/Aug/18", "name": "20190813 [SECURITY] [DSA 4497-1] linux security update", "tags": [], "refsource": "BUGTRAQ"}, {"url": "https://seclists.org/bugtraq/2019/Aug/26", "name": "20190814 [slackware-security] Slackware 14.2 kernel (SSA:2019-226-01)", "tags": [], "refsource": "BUGTRAQ"}, {"url": "https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html", "name": "[debian-lts-announce] 20190814 [SECURITY] [DLA 1885-1] linux-4.9 security update", "tags": [], "refsource": "MLIST"}, {"url": "http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html", "name": "http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html", "tags": [], "refsource": "MISC"}, {"url": "https://usn.ubuntu.com/4116-1/", "name": "USN-4116-1", "tags": [], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/4118-1/", "name": "USN-4118-1", "tags": [], "refsource": "UBUNTU"}, {"url": "https://security.netapp.com/advisory/ntap-20190905-0002/", "name": "https://security.netapp.com/advisory/ntap-20190905-0002/", "tags": [], "refsource": "CONFIRM"}, {"url": "http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html", "name": "http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html", "tags": [], "refsource": "MISC"}, {"url": "https://support.f5.com/csp/article/K14673240?utm_source=f5support&utm_medium=RSS", "name": "https://support.f5.com/csp/article/K14673240?utm_source=f5support&utm_medium=RSS", "tags": [], "refsource": "CONFIRM"}, {"url": "https://access.redhat.com/errata/RHSA-2019:3055", "name": "RHSA-2019:3055", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2019:3076", "name": "RHSA-2019:3076", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2019:3089", "name": "RHSA-2019:3089", "tags": [], "refsource": "REDHAT"}, {"url": "http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html", "name": "http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html", "tags": [], "refsource": "MISC"}, {"url": "https://access.redhat.com/errata/RHSA-2019:3217", "name": "RHSA-2019:3217", "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-2020:0543", "name": "RHSA-2020:0543", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2020:0664", "name": "RHSA-2020:0664", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2020:0698", "name": "RHSA-2020:0698", "tags": [], "refsource": "REDHAT"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "An issue was discovered in the Linux kernel before 4.18.7. In block/blk-core.c, there is an __blk_drain_queue() use-after-free because a certain error case is mishandled."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-416"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2018-20856", "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": "2019-07-26T05:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.18.7"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2019-08-13T19:15Z"}