{"id":"USN-4884-1","summary":"linux-oem-5.10 vulnerabilities","details":"Loris Reiff discovered that the BPF implementation in the Linux kernel did\nnot properly validate attributes in the getsockopt BPF hook. A local\nattacker could possibly use this to cause a denial of service (system\ncrash). (CVE-2021-20194)\n\nIt was discovered that the priority inheritance futex implementation in the\nLinux kernel contained a race condition, leading to a use-after-free\nvulnerability. A local attacker could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2021-3347)\n\nIt was discovered that the network block device (nbd) driver in the Linux\nkernel contained a use-after-free vulnerability during device setup. A\nlocal attacker with access to the nbd device could use this to cause a\ndenial of service (system crash) or possibly execute arbitrary code.\n(CVE-2021-3348)\n","modified":"2026-04-27T15:50:59.008799Z","published":"2021-03-20T04:51:03Z","related":["UBUNTU-CVE-2021-20194","UBUNTU-CVE-2021-3347","UBUNTU-CVE-2021-3348"],"upstream":["CVE-2021-20194","CVE-2021-3347","CVE-2021-3348","UBUNTU-CVE-2021-20194","UBUNTU-CVE-2021-3347","UBUNTU-CVE-2021-3348"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4884-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3347"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3348"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-20194"}],"affected":[{"package":{"name":"linux-oem-5.10","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/linux-oem-5.10@5.10.0-1017.18?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.10.0-1017.18"}]}],"versions":["5.10.0-1008.9","5.10.0-1011.12","5.10.0-1013.14","5.10.0-1014.15","5.10.0-1016.17"],"ecosystem_specific":{"binaries":[{"binary_version":"5.10.0-1017.18","binary_name":"linux-buildinfo-5.10.0-1017-oem"},{"binary_version":"5.10.0-1017.18","binary_name":"linux-headers-5.10.0-1017-oem"},{"binary_version":"5.10.0-1017.18","binary_name":"linux-image-unsigned-5.10.0-1017-oem"},{"binary_version":"5.10.0-1017.18","binary_name":"linux-modules-5.10.0-1017-oem"},{"binary_version":"5.10.0-1017.18","binary_name":"linux-oem-5.10-headers-5.10.0-1017"},{"binary_version":"5.10.0-1017.18","binary_name":"linux-oem-5.10-tools-5.10.0-1017"},{"binary_version":"5.10.0-1017.18","binary_name":"linux-oem-5.10-tools-host"},{"binary_version":"5.10.0-1017.18","binary_name":"linux-tools-5.10.0-1017-oem"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4884-1.json","cves_map":{"cves":[{"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":"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-2021-3347"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-3348"},{"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":"low","type":"Ubuntu"}],"id":"CVE-2021-20194"}],"ecosystem":"Ubuntu:20.04:LTS"}}}],"schema_version":"1.7.5"}