{"id":"USN-5591-4","summary":"linux-aws vulnerability","details":"\nIt was discovered that the virtual terminal driver in the Linux kernel did\nnot properly handle VGA console font changes, leading to an out-of-bounds\nwrite. A local attacker could use this to cause a denial of service (system\ncrash) or possibly execute arbitrary code.\n","modified":"2026-02-10T04:42:45Z","published":"2022-09-02T22:27:51Z","related":["UBUNTU-CVE-2021-33656"],"upstream":["CVE-2021-33656","UBUNTU-CVE-2021-33656"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5591-4"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-33656"}],"affected":[{"package":{"name":"linux-aws","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/linux-aws@4.15.0-1140.151?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-1140.151"}]}],"versions":["4.15.0-1001.1","4.15.0-1003.3","4.15.0-1005.5","4.15.0-1006.6","4.15.0-1007.7","4.15.0-1009.9","4.15.0-1010.10","4.15.0-1011.11","4.15.0-1016.16","4.15.0-1017.17","4.15.0-1019.19","4.15.0-1020.20","4.15.0-1021.21","4.15.0-1023.23","4.15.0-1025.25","4.15.0-1027.27","4.15.0-1029.30","4.15.0-1031.33","4.15.0-1032.34","4.15.0-1033.35","4.15.0-1034.36","4.15.0-1035.37","4.15.0-1037.39","4.15.0-1039.41","4.15.0-1040.42","4.15.0-1041.43","4.15.0-1043.45","4.15.0-1044.46","4.15.0-1045.47","4.15.0-1047.49","4.15.0-1048.50","4.15.0-1050.52","4.15.0-1051.53","4.15.0-1052.54","4.15.0-1054.56","4.15.0-1056.58","4.15.0-1057.59","4.15.0-1058.60","4.15.0-1060.62","4.15.0-1063.67","4.15.0-1065.69","4.15.0-1066.70","4.15.0-1067.71","4.15.0-1073.77","4.15.0-1076.80","4.15.0-1077.81","4.15.0-1079.83","4.15.0-1080.84","4.15.0-1082.86","4.15.0-1083.87","4.15.0-1086.91","4.15.0-1087.92","4.15.0-1088.93","4.15.0-1090.95","4.15.0-1091.96","4.15.0-1092.98","4.15.0-1093.99","4.15.0-1094.101","4.15.0-1095.102","4.15.0-1096.103","4.15.0-1097.104","4.15.0-1098.105","4.15.0-1099.106","4.15.0-1101.108","4.15.0-1102.109","4.15.0-1103.110","4.15.0-1106.113","4.15.0-1109.116","4.15.0-1110.117","4.15.0-1111.118","4.15.0-1112.119","4.15.0-1114.121","4.15.0-1115.122","4.15.0-1116.123","4.15.0-1118.125","4.15.0-1119.127","4.15.0-1121.129","4.15.0-1123.132","4.15.0-1124.133","4.15.0-1126.135","4.15.0-1127.136","4.15.0-1128.137","4.15.0-1130.139","4.15.0-1133.143","4.15.0-1136.147","4.15.0-1137.148","4.15.0-1139.150"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"4.15.0-1140.151","binary_name":"linux-aws-cloud-tools-4.15.0-1140"},{"binary_version":"4.15.0-1140.151","binary_name":"linux-aws-headers-4.15.0-1140"},{"binary_version":"4.15.0-1140.151","binary_name":"linux-aws-tools-4.15.0-1140"},{"binary_version":"4.15.0-1140.151","binary_name":"linux-buildinfo-4.15.0-1140-aws"},{"binary_version":"4.15.0-1140.151","binary_name":"linux-cloud-tools-4.15.0-1140-aws"},{"binary_version":"4.15.0-1140.151","binary_name":"linux-headers-4.15.0-1140-aws"},{"binary_version":"4.15.0-1140.151","binary_name":"linux-image-unsigned-4.15.0-1140-aws"},{"binary_version":"4.15.0-1140.151","binary_name":"linux-modules-4.15.0-1140-aws"},{"binary_version":"4.15.0-1140.151","binary_name":"linux-modules-extra-4.15.0-1140-aws"},{"binary_version":"4.15.0-1140.151","binary_name":"linux-tools-4.15.0-1140-aws"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2021-33656"}],"ecosystem":"Ubuntu:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5591-4.json"}}],"schema_version":"1.7.3"}