{"id":"USN-7865-1","summary":"linux-fips 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  - Virtio block driver;\n  - DMA engine subsystem;\n  - GPU drivers;\n  - HSI subsystem;\n  - Media drivers;\n  - Network drivers;\n  - Ethernet team driver;\n  - TTY drivers;\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  - SCTP protocol;\n  - VMware vSockets driver;\n  - USB sound devices;\n(CVE-2021-47149, CVE-2021-47294, CVE-2021-47319, CVE-2021-47330,\nCVE-2021-47589, CVE-2023-52574, CVE-2023-52650, CVE-2024-27078,\nCVE-2024-35849, CVE-2024-49924, CVE-2024-50006, CVE-2024-50299,\nCVE-2024-53124, CVE-2024-53150, CVE-2024-56767, CVE-2025-21796,\nCVE-2025-37785, CVE-2025-37838, CVE-2025-38352, CVE-2025-38617,\nCVE-2025-38618)\n","modified":"2026-04-27T18:25:48.370370Z","published":"2025-11-10T12:06:59Z","related":["UBUNTU-CVE-2021-47149","UBUNTU-CVE-2021-47294","UBUNTU-CVE-2021-47319","UBUNTU-CVE-2021-47330","UBUNTU-CVE-2021-47589","UBUNTU-CVE-2023-52574","UBUNTU-CVE-2023-52650","UBUNTU-CVE-2024-27078","UBUNTU-CVE-2024-35849","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-2025-38617","UBUNTU-CVE-2025-38618","UBUNTU-CVE-2025-40300"],"upstream":["CVE-2021-47149","CVE-2021-47294","CVE-2021-47319","CVE-2021-47330","CVE-2021-47589","CVE-2023-52574","CVE-2023-52650","CVE-2024-27078","CVE-2024-35849","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-2025-38617","CVE-2025-38618","CVE-2025-40300","UBUNTU-CVE-2021-47149","UBUNTU-CVE-2021-47294","UBUNTU-CVE-2021-47319","UBUNTU-CVE-2021-47330","UBUNTU-CVE-2021-47589","UBUNTU-CVE-2023-52574","UBUNTU-CVE-2023-52650","UBUNTU-CVE-2024-27078","UBUNTU-CVE-2024-35849","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-2025-38617","UBUNTU-CVE-2025-38618","UBUNTU-CVE-2025-40300"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7865-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-47149"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-47294"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-47319"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-47330"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-47589"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-52574"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-52650"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-27078"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-35849"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-49924"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-50006"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-50299"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-53124"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-53150"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-56767"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-21796"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-37785"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-37838"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-38352"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-38617"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-38618"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-40300"}],"affected":[{"package":{"name":"linux-fips","ecosystem":"Ubuntu:Pro:FIPS:16.04:LTS","purl":"pkg:deb/ubuntu/linux-fips@4.4.0-1119.126?arch=source&distro=fips-updates/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0-1119.126"}]}],"versions":["4.4.0-1003.3","4.4.0-1005.5","4.4.0-1006.6","4.4.0-1008.10","4.4.0-1010.13","4.4.0-1011.14","4.4.0-1012.16","4.4.0-1013.17","4.4.0-1015.20","4.4.0-1017.22","4.4.0-1019.24","4.4.0-1021.26","4.4.0-1022.27","4.4.0-1023.28","4.4.0-1025.30","4.4.0-1026.31","4.4.0-1027.32","4.4.0-1028.33","4.4.0-1029.34","4.4.0-1031.36","4.4.0-1032.37","4.4.0-1033.38","4.4.0-1034.39","4.4.0-1041.46","4.4.0-1042.47","4.4.0-1043.48","4.4.0-1044.49","4.4.0-1045.50","4.4.0-1046.51","4.4.0-1048.53","4.4.0-1049.55","4.4.0-1051.57","4.4.0-1052.58","4.4.0-1054.60","4.4.0-1055.61","4.4.0-1056.62","4.4.0-1057.63","4.4.0-1058.64","4.4.0-1060.66","4.4.0-1061.67","4.4.0-1062.68","4.4.0-1063.69","4.4.0-1064.70","4.4.0-1065.71","4.4.0-1066.72","4.4.0-1067.73","4.4.0-1068.74","4.4.0-1069.75","4.4.0-1071.77","4.4.0-1072.78","4.4.0-1073.79","4.4.0-1074.80","4.4.0-1077.84","4.4.0-1079.86","4.4.0-1080.87","4.4.0-1081.88","4.4.0-1082.89","4.4.0-1083.90","4.4.0-1084.91","4.4.0-1085.92","4.4.0-1086.93","4.4.0-1088.95","4.4.0-1089.96","4.4.0-1090.97","4.4.0-1091.98","4.4.0-1092.99","4.4.0-1093.100","4.4.0-1094.101","4.4.0-1095.102","4.4.0-1097.104","4.4.0-1099.106","4.4.0-1100.107","4.4.0-1101.108","4.4.0-1102.109","4.4.0-1103.110","4.4.0-1104.111","4.4.0-1105.112","4.4.0-1106.113","4.4.0-1107.114","4.4.0-1108.115","4.4.0-1109.116","4.4.0-1110.117","4.4.0-1111.118","4.4.0-1112.119","4.4.0-1113.120","4.4.0-1114.121","4.4.0-1115.122","4.4.0-1116.123","4.4.0-1117.124"],"ecosystem_specific":{"binaries":[{"binary_version":"4.4.0-1119.126","binary_name":"block-modules-4.4.0-1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with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7865-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:FIPS:16.04:LTS","cves":[{"id":"CVE-2021-47149","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2021-47294","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2021-47319","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2021-47330","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2021-47589","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2023-52574","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2023-52650","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2024-27078","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2024-35849","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2024-49924","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2024-50006","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2024-50299","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2024-53124","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2024-53150","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2024-56767","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2025-21796","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2025-37785","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2025-37838","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2025-38352","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2025-38617","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2025-38618","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2025-40300","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"high"}]}]}}}],"schema_version":"1.7.5"}