{"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":"2026-05-23T01:31:56.511783509Z","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"}],"affected":[{"package":{"name":"linux-oem-5.10","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/linux-oem-5.10?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_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","binary_version":"5.10.0-1017.18"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4884-1.json"}}],"schema_version":"1.7.5"}