{"id":"USN-3690-2","aliases":[],"status":"published","title":"amd64-microcode regression","description":"USN-3690-1 provided updated microcode for AMD processors to address\nCVE-2017-5715 (aka Spectre). Unfortunately, the update caused some\nsystems to fail to boot. This update reverts the update for Ubuntu\n14.04 LTS.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Jann Horn discovered that microprocessors utilizing speculative execution\n and branch prediction may allow unauthorized memory reads via sidechannel\n attacks. This flaw is known as Spectre. A local attacker could use this to\n expose sensitive information, including kernel memory.\n\n This update provides the microcode updates for AMD 17H family\n processors required for the corresponding Linux kernel updates.","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2018-07-05T22:13:21Z","modified":"2026-02-10T04:41:22Z","fixes":[{"ecosystem":"Ubuntu:14.04:LTS","package":"amd64-microcode","fixed_in":["3.20180524.1~ubuntu0.14.04.2+really20130710.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"amd64-microcode","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20180524.1~ubuntu0.14.04.2+really20130710.1"}]}],"versions":["1.20120910-3","2.20131007.1+really20130710.1","3.20180524.1~ubuntu0.14.04.1"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-3690-2","tags":["advisory"]},{"url":"https://launchpad.net/bugs/1779092","tags":["report"]}],"sources":{"osv":[{"id":"USN-3690-2","title":"amd64-microcode regression","description":"USN-3690-1 provided updated microcode for AMD processors to address\nCVE-2017-5715 (aka Spectre). Unfortunately, the update caused some\nsystems to fail to boot. This update reverts the update for Ubuntu\n14.04 LTS.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Jann Horn discovered that microprocessors utilizing speculative execution\n and branch prediction may allow unauthorized memory reads via sidechannel\n attacks. This flaw is known as Spectre. A local attacker could use this to\n expose sensitive information, including kernel memory.\n\n This update provides the microcode updates for AMD 17H family\n processors required for the corresponding Linux kernel updates.\n","status":"published","published":"2018-07-05T22:13:21Z","modified":"2026-02-10T04:41:22Z","updated_at":"2026-11-02T16:58:13.496563Z"}]}}