{"id":"CVE-2020-14390","title":"A flaw was found in the Linux kernel in versions before 5.9-rc6","summary":"A flaw was found in the Linux kernel in versions before 5.9-rc6. When changing screen size, an out-of-bounds memory write can occur leading to memory corruption or a denial of service. Due to the nature of the flaw, privilege escalation …","severity":"medium","cvss":5.6,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H","cwe":["CWE-787"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 2.2.3, < 5.9.0","linux_kernel = 5.9.0","debian_linux = 9.0"],"patched":["linux_kernel 5.9.0"],"published":"2020-09-18","updated":"2026-10-08","sourceUpdated":"2026-10-08T21:17:23.590","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-14390","references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html","label":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1876788","label":"secalert@redhat.com"},{"url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html","label":"secalert@redhat.com"},{"url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html","label":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1876788","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-14390.json"},{"url":"https://access.redhat.com/security/cve/CVE-2020-14390"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-14390"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-14390"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=50145474f6ef4a9c19205b173da6264a644c7489"}],"tags":["nvd","csaf","vex","red-hat","cve.org"],"epss":0.00352,"epssPercentile":0.28637,"ingestedAt":"2026-10-08T22:11:53.721Z","scores":{"nvd":5.6,"vendor":5.7},"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-08T20:56:34.546188Z"},"slug":"CVE-2020-14390","body":"## Overview\n\nA flaw was found in the Linux kernel in versions before 5.9-rc6. When changing screen size, an out-of-bounds memory write can occur leading to memory corruption or a denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.\n\n## Affected\n\n- `linux_kernel >= 2.2.3, < 5.9.0`\n- `linux_kernel = 5.9.0`\n- `debian_linux = 9.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.9.0`\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise MRG 2 · no fix planned: Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7, … · updated 2026-10-08 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-14390.json)","depth":"sunlit","depthScore":31,"depthScoreParts":{"impact":30.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}