{"schema_version":"1.7.5","id":"USN-5050-1","published":"2021-08-24T06:29:56Z","modified":"2026-06-03T14:03:59.559949676Z","related":["UBUNTU-CVE-2020-26558","UBUNTU-CVE-2021-0129","UBUNTU-CVE-2021-28691","UBUNTU-CVE-2021-3564","UBUNTU-CVE-2021-3573","UBUNTU-CVE-2021-38208"],"upstream":["CVE-2020-26558","CVE-2021-0129","CVE-2021-28691","CVE-2021-3564","CVE-2021-3573","CVE-2021-38208","UBUNTU-CVE-2020-26558","UBUNTU-CVE-2021-0129","UBUNTU-CVE-2021-28691","UBUNTU-CVE-2021-3564","UBUNTU-CVE-2021-3573","UBUNTU-CVE-2021-38208"],"summary":"linux-aws-5.8, linux-azure-5.8, linux-gcp-5.8, linux-oracle-5.8 vulnerabilities","details":"It was discovered that the bluetooth subsystem in the Linux kernel did not\nproperly perform access control. An authenticated attacker could possibly\nuse this to expose sensitive information. (CVE-2020-26558, CVE-2021-0129)\n\nMichael Brown discovered that the Xen netback driver in the Linux kernel\ndid not properly handle malformed packets from a network PV frontend,\nleading to a use-after-free vulnerability. An attacker in a guest VM could\nuse this to cause a denial of service or possibly execute arbitrary code.\n(CVE-2021-28691)\n\nIt was discovered that the bluetooth subsystem in the Linux kernel did not\nproperly handle HCI device initialization failure, leading to a double-free\nvulnerability. An attacker could use this to cause a denial of service or\npossibly execute arbitrary code. (CVE-2021-3564)\n\nIt was discovered that the bluetooth subsystem in the Linux kernel did not\nproperly handle HCI device detach events, leading to a use-after-free\nvulnerability. An attacker could use this to cause a denial of service or\npossibly execute arbitrary code. (CVE-2021-3573)\n\nIt was discovered that the NFC implementation in the Linux kernel did not\nproperly handle failed connect events leading to a NULL pointer\ndereference. A local attacker could use this to cause a denial of service.\n(CVE-2021-38208)\n","affected":[{"package":{"name":"linux-aws-5.8","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/linux-aws-5.8?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.8.0-1042.44~20.04.1"}]}],"versions":["5.8.0-1035.37~20.04.1","5.8.0-1038.40~20.04.1","5.8.0-1041.43~20.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"linux-aws-5.8-cloud-tools-5.8.0-1042","binary_version":"5.8.0-1042.44~20.04.1"},{"binary_name":"linux-aws-5.8-headers-5.8.0-1042","binary_version":"5.8.0-1042.44~20.04.1"},{"binary_name":"linux-aws-5.8-tools-5.8.0-1042","binary_version":"5.8.0-1042.44~20.04.1"},{"binary_name":"linux-buildinfo-5.8.0-1042-aws","binary_version":"5.8.0-1042.44~20.04.1"},{"binary_name":"linux-cloud-tools-5.8.0-1042-aws","binary_version":"5.8.0-1042.44~20.04.1"},{"binary_name":"linux-headers-5.8.0-1042-aws","binary_version":"5.8.0-1042.44~20.04.1"},{"binary_name":"linux-image-5.8.0-1042-aws","binary_version":"5.8.0-1042.44~20.04.1"},{"binary_name":"linux-modules-5.8.0-1042-aws","binary_version":"5.8.0-1042.44~20.04.1"},{"binary_name":"linux-modules-extra-5.8.0-1042-aws","binary_version":"5.8.0-1042.44~20.04.1"},{"binary_name":"linux-tools-5.8.0-1042-aws","binary_version":"5.8.0-1042.44~20.04.1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-26558","severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-0129","severity":[{"score":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-3564","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-3573","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-28691","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-38208","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5050-1.json"}},{"package":{"name":"linux-azure-5.8","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/linux-azure-5.8?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.8.0-1040.43~20.04.1"}]}],"versions":["5.8.0-1033.35~20.04.1","5.8.0-1036.38~20.04.1","5.8.0-1039.42~20.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"linux-azure-5.8-cloud-tools-5.8.0-1040","binary_version":"5.8.0-1040.43~20.04.1"},{"binary_name":"linux-azure-5.8-headers-5.8.0-1040","binary_version":"5.8.0-1040.43~20.04.1"},{"binary_name":"linux-azure-5.8-tools-5.8.0-1040","binary_version":"5.8.0-1040.43~20.04.1"},{"binary_name":"linux-buildinfo-5.8.0-1040-azure","binary_version":"5.8.0-1040.43~20.04.1"},{"binary_name":"linux-cloud-tools-5.8.0-1040-azure","binary_version":"5.8.0-1040.43~20.04.1"},{"binary_name":"linux-headers-5.8.0-1040-azure","binary_version":"5.8.0-1040.43~20.04.1"},{"binary_name":"linux-image-unsigned-5.8.0-1040-azure","binary_version":"5.8.0-1040.43~20.04.1"},{"binary_name":"linux-modules-5.8.0-1040-azure","binary_version":"5.8.0-1040.43~20.04.1"},{"binary_name":"linux-modules-extra-5.8.0-1040-azure","binary_version":"5.8.0-1040.43~20.04.1"},{"binary_name":"linux-tools-5.8.0-1040-azure","binary_version":"5.8.0-1040.43~20.04.1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-26558","severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-0129","severity":[{"score":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-3564","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-3573","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-28691","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-38208","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5050-1.json"}},{"package":{"name":"linux-gcp-5.8","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/linux-gcp-5.8?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.8.0-1039.41"}]}],"versions":["5.8.0-1032.34~20.04.1","5.8.0-1035.37~20.04.1","5.8.0-1038.40~20.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"linux-buildinfo-5.8.0-1039-gcp","binary_version":"5.8.0-1039.41"},{"binary_name":"linux-gcp-5.8-headers-5.8.0-1039","binary_version":"5.8.0-1039.41"},{"binary_name":"linux-gcp-5.8-tools-5.8.0-1039","binary_version":"5.8.0-1039.41"},{"binary_name":"linux-headers-5.8.0-1039-gcp","binary_version":"5.8.0-1039.41"},{"binary_name":"linux-image-unsigned-5.8.0-1039-gcp","binary_version":"5.8.0-1039.41"},{"binary_name":"linux-modules-5.8.0-1039-gcp","binary_version":"5.8.0-1039.41"},{"binary_name":"linux-modules-extra-5.8.0-1039-gcp","binary_version":"5.8.0-1039.41"},{"binary_name":"linux-tools-5.8.0-1039-gcp","binary_version":"5.8.0-1039.41"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-26558","severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-0129","severity":[{"score":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-3564","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-3573","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-28691","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-38208","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5050-1.json"}},{"package":{"name":"linux-oracle-5.8","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/linux-oracle-5.8?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.8.0-1038.39~20.04.1"}]}],"versions":["5.8.0-1031.32~20.04.2","5.8.0-1033.34~20.04.1","5.8.0-1034.35~20.04.2","5.8.0-1037.38~20.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"linux-buildinfo-5.8.0-1038-oracle","binary_version":"5.8.0-1038.39~20.04.1"},{"binary_name":"linux-headers-5.8.0-1038-oracle","binary_version":"5.8.0-1038.39~20.04.1"},{"binary_name":"linux-image-unsigned-5.8.0-1038-oracle","binary_version":"5.8.0-1038.39~20.04.1"},{"binary_name":"linux-modules-5.8.0-1038-oracle","binary_version":"5.8.0-1038.39~20.04.1"},{"binary_name":"linux-modules-extra-5.8.0-1038-oracle","binary_version":"5.8.0-1038.39~20.04.1"},{"binary_name":"linux-oracle-5.8-headers-5.8.0-1038","binary_version":"5.8.0-1038.39~20.04.1"},{"binary_name":"linux-oracle-5.8-tools-5.8.0-1038","binary_version":"5.8.0-1038.39~20.04.1"},{"binary_name":"linux-tools-5.8.0-1038-oracle","binary_version":"5.8.0-1038.39~20.04.1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-26558","severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-0129","severity":[{"score":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-3564","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-3573","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-28691","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-38208","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5050-1.json"}}],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5050-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26558"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-0129"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3564"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3573"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-28691"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-38208"}]}