{"id":"UBUNTU-CVE-2018-3640","details":"Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized disclosure of system parameters to an attacker with local user access via a side-channel analysis, aka Rogue System Register Read (RSRE), Variant 3a.","modified":"2026-02-04T04:36:21.013374Z","published":"2018-05-21T21:00:00Z","related":["USN-3756-1"],"upstream":["CVE-2018-3640"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-3640"},{"type":"REPORT","url":"https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00115.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3756-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-3640"}],"affected":[{"package":{"name":"intel-microcode","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/intel-microcode@3.20180807a.0ubuntu0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20180807a.0ubuntu0.14.04.1"}]}],"versions":["1.20130906.1ubuntu2","1.20130906.1ubuntu3","2.20140122.1","2.20140430.1ubuntu1","2.20140624-t-1ubuntu2","3.20180108.0~ubuntu14.04.2","3.20180108.0+really20170707ubuntu14.04.1","3.20180312.0~ubuntu14.04.1","3.20180425.1~ubuntu0.14.04.1","3.20180425.1~ubuntu0.14.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"3.20180807a.0ubuntu0.14.04.1","binary_name":"intel-microcode"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-3640.json"}},{"package":{"name":"intel-microcode","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/intel-microcode@3.20180807a.0ubuntu0.16.04.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20180807a.0ubuntu0.16.04.1"}]}],"versions":["3.20150121.1","3.20151106.1","3.20170707.1~ubuntu16.04.0","3.20180108.0~ubuntu16.04.2","3.20180108.0+really20170707ubuntu16.04.1","3.20180312.0~ubuntu16.04.1","3.20180425.1~ubuntu0.16.04.1","3.20180425.1~ubuntu0.16.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"3.20180807a.0ubuntu0.16.04.1","binary_name":"intel-microcode"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-3640.json"}},{"package":{"name":"intel-microcode","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/intel-microcode@3.20180807a.0ubuntu0.18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20180807a.0ubuntu0.18.04.1"}]}],"versions":["3.20170707.1","3.20171117.1","3.20180108.1","3.20180108.1+really20171117.1","3.20180312.0~ubuntu18.04.1","3.20180425.1~ubuntu0.18.04.1","3.20180425.1~ubuntu0.18.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"3.20180807a.0ubuntu0.18.04.1","binary_name":"intel-microcode"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-3640.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}