{"id":"UBUNTU-CVE-2018-14656","details":"A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.","modified":"2026-02-04T03:13:51.916751Z","published":"2018-10-08T22:29:00Z","withdrawn":"2025-06-23T15:53:14Z","related":["CVE-2018-14656"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-14656"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2018/10/04/1"},{"type":"REPORT","url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1650"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-14656"}],"affected":[{"package":{"name":"linux-flo","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/linux-flo@3.4.0-5.23?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.0-5.19","3.4.0-5.22","3.4.0-5.23"],"ecosystem_specific":{"ubuntu_priority":"medium"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-14656.json"}},{"package":{"name":"linux-goldfish","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/linux-goldfish@3.4.0-4.27?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.0-4.24","3.4.0-4.26","3.4.0-4.27"],"ecosystem_specific":{"ubuntu_priority":"medium"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-14656.json"}},{"package":{"name":"linux-mako","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/linux-mako@3.4.0-7.44?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.0-7.39","3.4.0-7.40","3.4.0-7.41","3.4.0-7.44"],"ecosystem_specific":{"ubuntu_priority":"medium"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-14656.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}