{"id":"USN-7861-5","summary":"linux-raspi, linux-raspi-realtime, linux-xilinx 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  - HSI subsystem;\n  - Bluetooth subsystem;\n  - Timer subsystem;\n(CVE-2025-37838, CVE-2025-38118, CVE-2025-38352)\n","modified":"2026-04-27T18:25:27.010820Z","published":"2025-12-03T14:52:04Z","related":["UBUNTU-CVE-2025-37838","UBUNTU-CVE-2025-38118","UBUNTU-CVE-2025-38352","UBUNTU-CVE-2025-40300"],"upstream":["CVE-2025-37838","CVE-2025-38118","CVE-2025-38352","CVE-2025-40300","UBUNTU-CVE-2025-37838","UBUNTU-CVE-2025-38118","UBUNTU-CVE-2025-38352","UBUNTU-CVE-2025-40300"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7861-5"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-37838"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-38118"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-38352"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-40300"}],"affected":[{"package":{"name":"linux-raspi","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/linux-raspi@6.8.0-1042.46?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.8.0-1042.46"}]}],"versions":["6.5.0-1005.7","6.7.0-1001.1","6.8.0-1001.1","6.8.0-1002.2","6.8.0-1003.3","6.8.0-1004.4","6.8.0-1005.5","6.8.0-1006.6","6.8.0-1007.7","6.8.0-1008.8","6.8.0-1009.10","6.8.0-1010.11","6.8.0-1011.12","6.8.0-1012.13","6.8.0-1013.14","6.8.0-1014.16","6.8.0-1015.17","6.8.0-1016.18","6.8.0-1017.19","6.8.0-1018.20","6.8.0-1019.23","6.8.0-1020.24","6.8.0-1024.28","6.8.0-1028.32","6.8.0-1029.33","6.8.0-1030.34","6.8.0-1031.35","6.8.0-1032.36","6.8.0-1035.39","6.8.0-1036.40","6.8.0-1038.42","6.8.0-1039.43","6.8.0-1040.44","6.8.0-1041.45"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"linux-buildinfo-6.8.0-1042-raspi","binary_version":"6.8.0-1042.46"},{"binary_name":"linux-headers-6.8.0-1042-raspi","binary_version":"6.8.0-1042.46"},{"binary_name":"linux-image-6.8.0-1042-raspi","binary_version":"6.8.0-1042.46"},{"binary_name":"linux-modules-6.8.0-1042-raspi","binary_version":"6.8.0-1042.46"},{"binary_name":"linux-raspi-headers-6.8.0-1042","binary_version":"6.8.0-1042.46"},{"binary_name":"linux-raspi-tools-6.8.0-1042","binary_version":"6.8.0-1042.46"},{"binary_name":"linux-tools-6.8.0-1042-raspi","binary_version":"6.8.0-1042.46"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7861-5.json","cves_map":{"cves":[{"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-2025-37838"},{"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":"high"}],"id":"CVE-2025-38118"},{"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-2025-38352"},{"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"}],"id":"CVE-2025-40300"}],"ecosystem":"Ubuntu:24.04:LTS"}}},{"package":{"name":"linux-xilinx","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/linux-xilinx@6.8.0-1019.20?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.8.0-1019.20"}]}],"versions":["6.8.0-1008.9","6.8.0-1009.10","6.8.0-1011.12","6.8.0-1012.13","6.8.0-1013.14","6.8.0-1014.15","6.8.0-1015.16","6.8.0-1017.18","6.8.0-1018.19"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"linux-buildinfo-6.8.0-1019-xilinx","binary_version":"6.8.0-1019.20"},{"binary_name":"linux-headers-6.8.0-1019-xilinx","binary_version":"6.8.0-1019.20"},{"binary_name":"linux-image-6.8.0-1019-xilinx","binary_version":"6.8.0-1019.20"},{"binary_name":"linux-modules-6.8.0-1019-xilinx","binary_version":"6.8.0-1019.20"},{"binary_name":"linux-tools-6.8.0-1019-xilinx","binary_version":"6.8.0-1019.20"},{"binary_name":"linux-xilinx-headers-6.8.0-1019","binary_version":"6.8.0-1019.20"},{"binary_name":"linux-xilinx-tools-6.8.0-1019","binary_version":"6.8.0-1019.20"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7861-5.json","cves_map":{"cves":[{"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-2025-37838"},{"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":"high"}],"id":"CVE-2025-38118"},{"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-2025-38352"},{"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"}],"id":"CVE-2025-40300"}],"ecosystem":"Ubuntu:24.04:LTS"}}},{"package":{"name":"linux-raspi-realtime","ecosystem":"Ubuntu:Pro:Realtime:24.04:LTS","purl":"pkg:deb/ubuntu/linux-raspi-realtime@6.8.0-2033.34?arch=source&distro=realtime/noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.8.0-2033.34"}]}],"versions":["6.7.0-2001.1","6.8.0-2001.1","6.8.0-2002.2","6.8.0-2004.4","6.8.0-2005.5","6.8.0-2006.6","6.8.0-2007.7","6.8.0-2008.8","6.8.0-2009.9","6.8.0-2010.10","6.8.0-2011.11","6.8.0-2012.12","6.8.0-2013.14","6.8.0-2014.15","6.8.0-2015.16","6.8.0-2016.17","6.8.0-2017.18","6.8.0-2018.19","6.8.0-2019.20","6.8.0-2022.23","6.8.0-2023.24","6.8.0-2024.25","6.8.0-2025.26","6.8.0-2026.27","6.8.0-2028.29","6.8.0-2029.30","6.8.0-2030.31","6.8.0-2031.32","6.8.0-2032.33"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"linux-buildinfo-6.8.0-2033-raspi-realtime","binary_version":"6.8.0-2033.34"},{"binary_name":"linux-headers-6.8.0-2033-raspi-realtime","binary_version":"6.8.0-2033.34"},{"binary_name":"linux-image-6.8.0-2033-raspi-realtime","binary_version":"6.8.0-2033.34"},{"binary_name":"linux-modules-6.8.0-2033-raspi-realtime","binary_version":"6.8.0-2033.34"},{"binary_name":"linux-raspi-realtime-headers-6.8.0-2033","binary_version":"6.8.0-2033.34"},{"binary_name":"linux-raspi-realtime-tools-6.8.0-2033","binary_version":"6.8.0-2033.34"},{"binary_name":"linux-tools-6.8.0-2033-raspi-realtime","binary_version":"6.8.0-2033.34"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7861-5.json","cves_map":{"cves":[{"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-2025-37838"},{"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":"high"}],"id":"CVE-2025-38118"},{"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-2025-38352"},{"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"}],"id":"CVE-2025-40300"}],"ecosystem":"Ubuntu:Pro:Realtime:24.04:LTS"}}}],"schema_version":"1.7.5"}