{"schemaVersion":3,"id":"USN-7861-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux, linux-aws, linux-gkeop, linux-hwe-6.8, linux-ibm, linux-ibm-6.8, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-lowlatency vulnerabilities\n\nJean-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.\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)","dates":{"published":"2025-11-06T09:10:53.000Z","modified":"2026-07-31T14:35:22.757Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"linux","name":"linux","label":"linux","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux","purlType":"deb","versions":[{"text":"< 6.8.0-87.88","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-87.88","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-aws","name":"linux-aws","label":"linux-aws","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-aws","purlType":"deb","versions":[{"text":"< 6.8.0-1042.44","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1042.44","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-gkeop","name":"linux-gkeop","label":"linux-gkeop","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-gkeop","purlType":"deb","versions":[{"text":"< 6.8.0-1026.29","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1026.29","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-hwe-6.8","name":"linux-hwe-6.8","label":"linux-hwe-6.8","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-hwe-6.8","purlType":"deb","versions":[{"text":"< 6.8.0-87.88~22.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-87.88~22.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-ibm","name":"linux-ibm","label":"linux-ibm","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-ibm","purlType":"deb","versions":[{"text":"< 6.8.0-1040.40","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1040.40","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-ibm-6.8","name":"linux-ibm-6.8","label":"linux-ibm-6.8","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-ibm-6.8","purlType":"deb","versions":[{"text":"< 6.8.0-1040.40~22.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1040.40~22.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-lowlatency","name":"linux-lowlatency","label":"linux-lowlatency","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-lowlatency","purlType":"deb","versions":[{"text":"< 6.8.0-87.88.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-87.88.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-lowlatency-hwe-6.8","name":"linux-lowlatency-hwe-6.8","label":"linux-lowlatency-hwe-6.8","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-lowlatency-hwe-6.8","purlType":"deb","versions":[{"text":"< 6.8.0-87.88.1~22.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-87.88.1~22.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-nvidia","name":"linux-nvidia","label":"linux-nvidia","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-nvidia","purlType":"deb","versions":[{"text":"< 6.8.0-1042.45","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1042.45","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-nvidia-lowlatency","name":"linux-nvidia-lowlatency","label":"linux-nvidia-lowlatency","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-nvidia-lowlatency","purlType":"deb","versions":[{"text":"< 6.8.0-1042.45.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.8.0-1042.45.1","eol":null,"hubHref":null}],"affectedCount":10,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-7861-1","label":"ubuntu.com/security/notices/USN-7861-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-37838","label":"ubuntu.com/security/CVE-2025-37838","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-38118","label":"ubuntu.com/security/CVE-2025-38118","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-38352","label":"ubuntu.com/security/CVE-2025-38352","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-40300","label":"ubuntu.com/security/CVE-2025-40300","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2025-37838","CVE-2025-38118","CVE-2025-38352","CVE-2025-40300"],"downstream":[],"duplicates":[],"related":["CVE-2025-37838","CVE-2025-38118","CVE-2025-38352","CVE-2025-40300"]},"timeline":[{"kind":"published","date":"2025-11-06T09:10:53.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-31T14:35:22.757Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T06:56:03.624Z","stale":false,"partial":false}}