{"id":"USN-7854-1","summary":"linux-kvm vulnerabilities","details":"Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered\nthat the Linux kernel contained insufficient branch predictor isolation\nbetween a guest and a userspace hypervisor for certain processors. This\nflaw is known as VMSCAPE. An attacker in a guest VM could possibly use this\nto expose sensitive information from the host OS. (CVE-2025-40300)\n\nSeveral security issues were discovered in the Linux kernel.\nAn attacker could possibly use these to compromise the system.\nThis update corrects flaws in the following subsystems:\n  - DMA engine subsystem;\n  - GPU drivers;\n  - HSI subsystem;\n  - Ethernet team driver;\n  - Framebuffer layer;\n  - BTRFS file system;\n  - Ext4 file system;\n  - Network file system (NFS) server daemon;\n  - Timer subsystem;\n  - DCCP (Datagram Congestion Control Protocol);\n  - IPv6 networking;\n  - NET/ROM layer;\n  - Packet sockets;\n  - Network traffic control;\n  - SCTP protocol;\n  - VMware vSockets driver;\n  - USB sound devices;\n(CVE-2023-52574, CVE-2023-52650, CVE-2024-35849, CVE-2024-41006,\nCVE-2024-49924, CVE-2024-50006, CVE-2024-50299, CVE-2024-53124,\nCVE-2024-53150, CVE-2024-56767, CVE-2025-21796, CVE-2025-37785,\nCVE-2025-37838, CVE-2025-38352, CVE-2025-38477, CVE-2025-38617,\nCVE-2025-38618)\n","modified":"2026-05-23T01:34:32.087493540Z","published":"2025-10-30T19:48:12Z","related":["UBUNTU-CVE-2023-52574","UBUNTU-CVE-2023-52650","UBUNTU-CVE-2024-35849","UBUNTU-CVE-2024-41006","UBUNTU-CVE-2024-49924","UBUNTU-CVE-2024-50006","UBUNTU-CVE-2024-50299","UBUNTU-CVE-2024-53124","UBUNTU-CVE-2024-53150","UBUNTU-CVE-2024-56767","UBUNTU-CVE-2025-21796","UBUNTU-CVE-2025-37785","UBUNTU-CVE-2025-37838","UBUNTU-CVE-2025-38352","UBUNTU-CVE-2025-38477","UBUNTU-CVE-2025-38617","UBUNTU-CVE-2025-38618","UBUNTU-CVE-2025-40300"],"upstream":["CVE-2023-52574","CVE-2023-52650","CVE-2024-35849","CVE-2024-41006","CVE-2024-49924","CVE-2024-50006","CVE-2024-50299","CVE-2024-53124","CVE-2024-53150","CVE-2024-56767","CVE-2025-21796","CVE-2025-37785","CVE-2025-37838","CVE-2025-38352","CVE-2025-38477","CVE-2025-38617","CVE-2025-38618","CVE-2025-40300","UBUNTU-CVE-2023-52574","UBUNTU-CVE-2023-52650","UBUNTU-CVE-2024-35849","UBUNTU-CVE-2024-41006","UBUNTU-CVE-2024-49924","UBUNTU-CVE-2024-50006","UBUNTU-CVE-2024-50299","UBUNTU-CVE-2024-53124","UBUNTU-CVE-2024-53150","UBUNTU-CVE-2024-56767","UBUNTU-CVE-2025-21796","UBUNTU-CVE-2025-37785","UBUNTU-CVE-2025-37838","UBUNTU-CVE-2025-38352","UBUNTU-CVE-2025-38477","UBUNTU-CVE-2025-38617","UBUNTU-CVE-2025-38618","UBUNTU-CVE-2025-40300"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7854-1"}],"affected":[{"package":{"name":"linux-kvm","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/linux-kvm?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-1168.173"}]}],"versions":["4.15.0-1002.2","4.15.0-1003.3","4.15.0-1004.4","4.15.0-1006.6","4.15.0-1008.8","4.15.0-1010.10","4.15.0-1011.11","4.15.0-1012.12","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","4.15.0-1026.26","4.15.0-1027.27","4.15.0-1028.28","4.15.0-1029.29","4.15.0-1030.30","4.15.0-1031.31","4.15.0-1032.32","4.15.0-1034.34","4.15.0-1035.35","4.15.0-1036.36","4.15.0-1038.38","4.15.0-1039.39","4.15.0-1042.42","4.15.0-1043.43","4.15.0-1044.44","4.15.0-1046.46","4.15.0-1047.47","4.15.0-1048.48","4.15.0-1050.50","4.15.0-1051.51","4.15.0-1052.52","4.15.0-1053.53","4.15.0-1056.57","4.15.0-1058.59","4.15.0-1059.60","4.15.0-1060.61","4.15.0-1067.68","4.15.0-1069.70","4.15.0-1071.72","4.15.0-1072.73","4.15.0-1074.75","4.15.0-1075.76","4.15.0-1077.79","4.15.0-1079.81","4.15.0-1081.83","4.15.0-1082.84","4.15.0-1084.86","4.15.0-1085.87","4.15.0-1086.88","4.15.0-1087.89","4.15.0-1088.90","4.15.0-1089.91","4.15.0-1090.92","4.15.0-1091.93","4.15.0-1092.94","4.15.0-1094.96","4.15.0-1097.99","4.15.0-1098.100","4.15.0-1099.101","4.15.0-1100.102","4.15.0-1101.103","4.15.0-1102.104","4.15.0-1103.105","4.15.0-1105.107","4.15.0-1106.108","4.15.0-1107.109","4.15.0-1109.112","4.15.0-1110.113","4.15.0-1112.115","4.15.0-1113.116","4.15.0-1114.117","4.15.0-1116.119","4.15.0-1119.123","4.15.0-1122.127","4.15.0-1123.128","4.15.0-1125.130","4.15.0-1126.131","4.15.0-1127.132","4.15.0-1128.133","4.15.0-1129.134","4.15.0-1132.137","4.15.0-1133.138","4.15.0-1134.139","4.15.0-1135.140","4.15.0-1136.141","4.15.0-1137.142","4.15.0-1138.143","4.15.0-1139.144","4.15.0-1140.145","4.15.0-1141.146","4.15.0-1142.147","4.15.0-1143.148","4.15.0-1144.149","4.15.0-1145.150","4.15.0-1146.151","4.15.0-1147.152","4.15.0-1148.153","4.15.0-1149.154","4.15.0-1150.155","4.15.0-1151.156","4.15.0-1152.157","4.15.0-1153.158","4.15.0-1154.159","4.15.0-1155.160","4.15.0-1156.161","4.15.0-1157.162","4.15.0-1158.163","4.15.0-1159.164","4.15.0-1160.165","4.15.0-1161.166","4.15.0-1162.167","4.15.0-1163.168","4.15.0-1164.169","4.15.0-1165.170","4.15.0-1166.171","4.15.0-1167.172"],"ecosystem_specific":{"binaries":[{"binary_name":"linux-buildinfo-4.15.0-1168-kvm","binary_version":"4.15.0-1168.173"},{"binary_name":"linux-headers-4.15.0-1168-kvm","binary_version":"4.15.0-1168.173"},{"binary_name":"linux-image-4.15.0-1168-kvm","binary_version":"4.15.0-1168.173"},{"binary_name":"linux-kvm-headers-4.15.0-1168","binary_version":"4.15.0-1168.173"},{"binary_name":"linux-kvm-tools-4.15.0-1168","binary_version":"4.15.0-1168.173"},{"binary_name":"linux-modules-4.15.0-1168-kvm","binary_version":"4.15.0-1168.173"},{"binary_name":"linux-tools-4.15.0-1168-kvm","binary_version":"4.15.0-1168.173"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7854-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[]}}}],"schema_version":"1.7.5"}