{"schemaVersion":3,"id":"USN-5116-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux, linux-bluefield, linux-gcp-5.4, linux-hwe-5.4, linux-kvm vulnerabilities\n\nIt was discovered that a race condition existed in the Atheros Ath9k WiFi\ndriver in the Linux kernel. An attacker could possibly use this to expose\nsensitive information (WiFi network traffic). (CVE-2020-3702)\n\nAlois Wohlschlager discovered that the overlay file system in the Linux\nkernel did not restrict private clones in some situations. An attacker\ncould use this to expose sensitive information. (CVE-2021-3732)\n\nIt was discovered that the KVM hypervisor implementation in the Linux\nkernel did not properly compute the access permissions for shadow pages in\nsome situations. A local attacker could use this to cause a denial of\nservice. (CVE-2021-38198)\n\nIt was discovered that the Xilinx 10/100 Ethernet Lite device driver in the\nLinux kernel could report pointer addresses in some situations. An attacker\ncould use this information to ease the exploitation of another\nvulnerability. (CVE-2021-38205)\n\nIt was discovered that the ext4 file system in the Linux kernel contained a\nrace condition when writing xattrs to an inode. A local attacker could use\nthis to cause a denial of service or possibly gain administrative\nprivileges. (CVE-2021-40490)\n\nIt was discovered that the 6pack network protocol driver in the Linux\nkernel did not properly perform validation checks. A privileged attacker\ncould use this to cause a denial of service (system crash) or execute\narbitrary code. (CVE-2021-42008)","dates":{"published":"2021-10-20T18:42:57.000Z","modified":"2026-09-09T14:33:17.299Z","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":"< 5.4.0-89.100","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-89.100","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-bluefield","name":"linux-bluefield","label":"linux-bluefield","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-bluefield","purlType":"deb","versions":[{"text":"< 5.4.0-1020.23","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1020.23","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-gcp-5.4","name":"linux-gcp-5.4","label":"linux-gcp-5.4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-gcp-5.4","purlType":"deb","versions":[{"text":"< 5.4.0-1055.59~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1055.59~18.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-hwe-5.4","name":"linux-hwe-5.4","label":"linux-hwe-5.4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-hwe-5.4","purlType":"deb","versions":[{"text":"< 5.4.0-89.100~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-89.100~18.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-kvm","name":"linux-kvm","label":"linux-kvm","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-kvm","purlType":"deb","versions":[{"text":"< 5.4.0-1048.50","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1048.50","eol":null,"hubHref":null}],"affectedCount":5,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5116-1","label":"ubuntu.com/security/notices/USN-5116-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-3702","label":"ubuntu.com/security/CVE-2020-3702","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-3732","label":"ubuntu.com/security/CVE-2021-3732","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-38198","label":"ubuntu.com/security/CVE-2021-38198","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-38205","label":"ubuntu.com/security/CVE-2021-38205","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-40490","label":"ubuntu.com/security/CVE-2021-40490","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-42008","label":"ubuntu.com/security/CVE-2021-42008","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2020-3702","CVE-2021-3732","CVE-2021-38198","CVE-2021-38205","CVE-2021-40490","CVE-2021-42008"],"downstream":[],"duplicates":[],"related":["CVE-2020-3702","CVE-2021-3732","CVE-2021-38198","CVE-2021-38205","CVE-2021-40490","CVE-2021-42008"]},"timeline":[{"kind":"published","date":"2021-10-20T18:42:57.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-09T14:33:17.299Z","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":"2026-10-20T08:09:41.822Z","stale":false,"partial":false}}