{"id":"LSN-0065-1","summary":"Kernel Live Patch Security Notice","details":"Andrew Honig reported a flaw in the way KVM (Kernel-based Virtual\nMachine) emulated the IOAPIC. A privileged guest user could exploit\nthis flaw to read host memory or cause a denial of service (crash\nthe host). (CVE-2013-1798)\n\nIt was discovered that the KVM implementation in the Linux kernel,\nwhen paravirtual TLB flushes are enabled in guests, the hypervisor in\nsome situations could miss deferred TLB flushes or otherwise mishandle\nthem.  An attacker in a guest VM could use this to expose sensitive\ninformation (read memory from another guest VM). (CVE-2019-3016)\n\nAl Viro discovered that the vfs layer in the Linux kernel contained\na use- after-free vulnerability. A local attacker could use this to\ncause a denial of service (system crash) or possibly expose sensitive\ninformation (kernel memory). (CVE-2020-8428)","modified":"2025-12-15T10:29:11.326951Z","published":"2020-04-09T10:58:10Z","upstream":["CVE-2013-1798","CVE-2019-3016","CVE-2020-8428","UBUNTU-CVE-2013-1798","UBUNTU-CVE-2019-3016","UBUNTU-CVE-2020-8428"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/LSN-0065-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-1798"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-3016"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-8428"}],"affected":[{"package":{"name":"linux-lts-xenial","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/linux-lts-xenial@4.4.0-177.207~14.04.1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0-177.207~14.04.1"}]}],"versions":["4.4.0-13.29~14.04.1","4.4.0-14.30~14.04.2","4.4.0-15.31~14.04.1","4.4.0-18.34~14.04.1","4.4.0-21.37~14.04.1","4.4.0-22.39~14.04.1","4.4.0-22.40~14.04.1","4.4.0-24.43~14.04.1","4.4.0-28.47~14.04.1","4.4.0-31.50~14.04.1","4.4.0-34.53~14.04.1","4.4.0-36.55~14.04.1","4.4.0-38.57~14.04.1","4.4.0-42.62~14.04.1","4.4.0-45.66~14.04.1","4.4.0-47.68~14.04.1","4.4.0-51.72~14.04.1","4.4.0-53.74~14.04.1","4.4.0-57.78~14.04.1","4.4.0-59.80~14.04.1","4.4.0-62.83~14.04.1","4.4.0-63.84~14.04.2","4.4.0-64.85~14.04.1","4.4.0-66.87~14.04.1","4.4.0-67.88~14.04.1","4.4.0-70.91~14.04.1","4.4.0-71.92~14.04.1","4.4.0-72.93~14.04.1","4.4.0-75.96~14.04.1","4.4.0-78.99~14.04.2","4.4.0-79.100~14.04.1","4.4.0-81.104~14.04.1","4.4.0-83.106~14.04.1","4.4.0-87.110~14.04.1","4.4.0-89.112~14.04.1","4.4.0-91.114~14.04.1","4.4.0-92.115~14.04.1","4.4.0-93.116~14.04.1","4.4.0-96.119~14.04.1","4.4.0-97.120~14.04.1","4.4.0-98.121~14.04.1","4.4.0-101.124~14.04.1","4.4.0-103.126~14.04.1","4.4.0-104.127~14.04.1","4.4.0-108.131~14.04.1","4.4.0-109.132~14.04.1","4.4.0-111.134~14.04.1","4.4.0-112.135~14.04.1","4.4.0-116.140~14.04.1","4.4.0-119.143~14.04.1","4.4.0-121.145~14.04.1","4.4.0-124.148~14.04.1","4.4.0-127.153~14.04.1","4.4.0-128.154~14.04.1","4.4.0-130.156~14.04.1","4.4.0-131.157~14.04.1","4.4.0-133.159~14.04.1","4.4.0-134.160~14.04.1","4.4.0-135.161~14.04.1","4.4.0-137.163~14.04.1","4.4.0-138.164~14.04.1","4.4.0-139.165~14.04.1","4.4.0-140.166~14.04.1","4.4.0-141.167~14.04.1","4.4.0-142.168~14.04.1","4.4.0-143.169~14.04.2","4.4.0-144.170~14.04.1","4.4.0-146.172~14.04.1","4.4.0-148.174~14.04.1","4.4.0-150.176~14.04.1","4.4.0-151.178~14.04.1","4.4.0-154.181~14.04.1","4.4.0-157.185~14.04.1","4.4.0-159.187~14.04.1","4.4.0-161.189~14.04.1","4.4.0-164.192~14.04.1","4.4.0-165.193~14.04.1","4.4.0-166.195~14.04.1","4.4.0-168.197~14.04.1","4.4.0-169.198~14.04.1","4.4.0-170.199~14.04.1","4.4.0-171.200~14.04.1","4.4.0-173.203~14.04.1","4.4.0-174.204~14.04.1","4.4.0-176.206~14.04.1"],"ecosystem_specific":{"module_name_regex":"lkp_Ubuntu_4_4_0[_|\\d]+_(?:generic|lowlatency)_(\\d+)","module_version":"65","availability":"Livepatch 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