{"id":"USN-5207-1","summary":"linux-oem-5.10 vulnerabilities","details":"Nadav Amit discovered that the hugetlb implementation in the Linux kernel\ndid not perform TLB flushes under certain conditions. A local attacker\ncould use this to leak or alter data from other processes that use huge\npages. (CVE-2021-4002)\n\nIt was discovered that the eBPF implementation in the Linux kernel\ncontained a race condition around read-only maps. A privileged attacker\ncould use this to modify read-only maps. (CVE-2021-4001)\n\nLuo Likang discovered that the FireDTV Firewire driver in the Linux kernel\ndid not properly perform bounds checking in some situations. A local\nattacker could use this to cause a denial of service (system crash) or\npossibly execute arbitrary code. (CVE-2021-42739)\n\nIt was discovered that the TIPC Protocol implementation in the Linux kernel\ndid not properly validate MSG_CRYPTO messages in some situations. An\nattacker could use this to cause a denial of service (system crash) or\npossibly execute arbitrary code. (CVE-2021-43267)\n","modified":"2026-06-03T13:49:18.777630405Z","published":"2022-01-05T17:03:26Z","related":["UBUNTU-CVE-2021-4001","UBUNTU-CVE-2021-4002","UBUNTU-CVE-2021-42739","UBUNTU-CVE-2021-43267"],"upstream":["CVE-2021-4001","CVE-2021-4002","CVE-2021-42739","CVE-2021-43267","UBUNTU-CVE-2021-4001","UBUNTU-CVE-2021-4002","UBUNTU-CVE-2021-42739","UBUNTU-CVE-2021-43267"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5207-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4001"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4002"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-42739"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-43267"}],"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":"5.10.0-1053.55"}]}],"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","5.10.0-1017.18","5.10.0-1019.20","5.10.0-1021.22","5.10.0-1022.23","5.10.0-1023.24","5.10.0-1025.26","5.10.0-1026.27","5.10.0-1029.30","5.10.0-1032.33","5.10.0-1033.34","5.10.0-1034.35","5.10.0-1038.40","5.10.0-1044.46","5.10.0-1045.47","5.10.0-1049.51","5.10.0-1050.52","5.10.0-1051.53","5.10.0-1052.54"],"ecosystem_specific":{"binaries":[{"binary_version":"5.10.0-1053.55","binary_name":"linux-buildinfo-5.10.0-1053-oem"},{"binary_version":"5.10.0-1053.55","binary_name":"linux-headers-5.10.0-1053-oem"},{"binary_version":"5.10.0-1053.55","binary_name":"linux-image-unsigned-5.10.0-1053-oem"},{"binary_version":"5.10.0-1053.55","binary_name":"linux-modules-5.10.0-1053-oem"},{"binary_version":"5.10.0-1053.55","binary_name":"linux-oem-5.10-headers-5.10.0-1053"},{"binary_version":"5.10.0-1053.55","binary_name":"linux-oem-5.10-tools-5.10.0-1053"},{"binary_version":"5.10.0-1053.55","binary_name":"linux-oem-5.10-tools-host"},{"binary_version":"5.10.0-1053.55","binary_name":"linux-tools-5.10.0-1053-oem"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5207-1.json","cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-4001"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2021-4002"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-42739"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-43267"}]}}}],"schema_version":"1.7.5"}