{"schemaVersion":3,"id":"USN-4525-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities\n\nIt was discovered that the AMD Cryptographic Coprocessor device driver in\nthe Linux kernel did not properly deallocate memory in some situations. A\nlocal attacker could use this to cause a denial of service (memory\nexhaustion). (CVE-2019-18808)\n\nIt was discovered that the Conexant 23885 TV card device driver for the\nLinux kernel did not properly deallocate memory in some error conditions. A\nlocal attacker could use this to cause a denial of service (memory\nexhaustion). (CVE-2019-19054)\n\nIt was discovered that the VFIO PCI driver in the Linux kernel did not\nproperly handle attempts to access disabled memory spaces. A local attacker\ncould use this to cause a denial of service (system crash).\n(CVE-2020-12888)\n\nIt was discovered that the state of network RNG in the Linux kernel was\npotentially observable. A remote attacker could use this to expose\nsensitive information. (CVE-2020-16166)\n\nIt was discovered that the NFS client implementation in the Linux kernel\ndid not properly perform bounds checking before copying security labels in\nsome situations. A local attacker could use this to cause a denial of\nservice (system crash) or possibly execute arbitrary code. (CVE-2020-25212)","dates":{"published":"2020-09-24T03:59:06.000Z","modified":"2026-06-03T13:33:44.484Z","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":"< 5.4.0-48.52","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-48.52","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":"< 5.4.0-1025.25","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1025.25","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-aws-5.4","name":"linux-aws-5.4","label":"linux-aws-5.4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-aws-5.4","purlType":"deb","versions":[{"text":"< 5.4.0-1025.25~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1025.25~18.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-azure","name":"linux-azure","label":"linux-azure","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-azure","purlType":"deb","versions":[{"text":"< 5.4.0-1026.26","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1026.26","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-azure-5.4","name":"linux-azure-5.4","label":"linux-azure-5.4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-azure-5.4","purlType":"deb","versions":[{"text":"< 5.4.0-1026.26~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1026.26~18.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-gcp","name":"linux-gcp","label":"linux-gcp","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-gcp","purlType":"deb","versions":[{"text":"< 5.4.0-1025.25","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1025.25","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":"< 5.4.0-1025.25~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1025.25~18.04.1","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":"< 5.4.0-48.52~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-48.52~18.04.1","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":"< 5.4.0-1024.24","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1024.24","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-oracle","name":"linux-oracle","label":"linux-oracle","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-oracle","purlType":"deb","versions":[{"text":"< 5.4.0-1025.25","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1025.25","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-oracle-5.4","name":"linux-oracle-5.4","label":"linux-oracle-5.4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-oracle-5.4","purlType":"deb","versions":[{"text":"< 5.4.0-1025.25~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1025.25~18.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-raspi","name":"linux-raspi","label":"linux-raspi","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-raspi","purlType":"deb","versions":[{"text":"< 5.4.0-1019.21","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1019.21","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-raspi-5.4","name":"linux-raspi-5.4","label":"linux-raspi-5.4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-raspi-5.4","purlType":"deb","versions":[{"text":"< 5.4.0-1019.21~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1019.21~18.04.1","eol":null,"hubHref":null}],"affectedCount":13,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4525-1","label":"ubuntu.com/security/notices/USN-4525-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-18808","label":"ubuntu.com/security/CVE-2019-18808","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2019-19054","label":"ubuntu.com/security/CVE-2019-19054","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12888","label":"ubuntu.com/security/CVE-2020-12888","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-16166","label":"ubuntu.com/security/CVE-2020-16166","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-25212","label":"ubuntu.com/security/CVE-2020-25212","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2019-18808","CVE-2019-19054","CVE-2020-12888","CVE-2020-16166","CVE-2020-25212"],"downstream":[],"duplicates":[],"related":["CVE-2019-18808","CVE-2019-19054","CVE-2020-12888","CVE-2020-16166","CVE-2020-25212"]},"timeline":[{"kind":"published","date":"2020-09-24T03:59:06.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-03T13:33:44.484Z","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":"2026-10-19T17:21:39.994Z","stale":false,"partial":false}}