{"id":"USN-7864-1","summary":"linux-gcp, linux-gcp-6.8, linux-gke 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  - I2C subsystem;\n  - Bluetooth subsystem;\n  - Timer subsystem;\n(CVE-2025-37838, CVE-2025-38118, CVE-2025-38352, CVE-2025-38425)\n","modified":"2026-02-10T04:50:22Z","published":"2025-11-07T09:01:59Z","related":["UBUNTU-CVE-2025-37838","UBUNTU-CVE-2025-38118","UBUNTU-CVE-2025-38352","UBUNTU-CVE-2025-38425","UBUNTU-CVE-2025-40300"],"upstream":["CVE-2025-37838","CVE-2025-38118","CVE-2025-38352","CVE-2025-38425","CVE-2025-40300","UBUNTU-CVE-2025-37838","UBUNTU-CVE-2025-38118","UBUNTU-CVE-2025-38352","UBUNTU-CVE-2025-38425","UBUNTU-CVE-2025-40300"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7864-1"},{"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-2025-38425"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-40300"}],"affected":[{"package":{"name":"linux-gcp-6.8","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/linux-gcp-6.8@6.8.0-1043.46~22.04.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.8.0-1043.46~22.04.1"}]}],"versions":["6.8.0-1010.11~22.04.1","6.8.0-1011.12~22.04.1","6.8.0-1012.13~22.04.1","6.8.0-1013.14~22.04.1","6.8.0-1014.16~22.04.1","6.8.0-1015.17~22.04.1","6.8.0-1016.18~22.04.1","6.8.0-1017.19~22.04.1","6.8.0-1018.20~22.04.1","6.8.0-1019.21~22.04.1","6.8.0-1020.22~22.04.1","6.8.0-1021.23~22.04.1","6.8.0-1024.26~22.04.1","6.8.0-1025.27~22.04.1","6.8.0-1026.28~22.04.1","6.8.0-1027.29~22.04.1","6.8.0-1028.30~22.04.1","6.8.0-1029.31~22.04.1","6.8.0-1030.32~22.04.1","6.8.0-1031.33~22.04.1","6.8.0-1032.34~22.04.1","6.8.0-1033.35~22.04.1","6.8.0-1034.36~22.04.2","6.8.0-1036.38~22.04.1","6.8.0-1037.39~22.04.1","6.8.0-1040.42~22.04.1","6.8.0-1041.43~22.04.1","6.8.0-1042.45~22.04.1"],"ecosystem_specific":{"availability":"No 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