{"id":"USN-5470-1","summary":"linux-oem-5.14 vulnerabilities","details":"It was discovered that the Linux kernel did not properly restrict access to\nthe kernel debugger when booted in secure boot environments. A privileged\nattacker could use this to bypass UEFI Secure Boot restrictions.\n(CVE-2022-21499)\n\nAaron Adams discovered that the netfilter subsystem in the Linux kernel did\nnot properly handle the removal of stateful expressions in some situations,\nleading to a use-after-free vulnerability. A local attacker could use this\nto cause a denial of service (system crash) or execute arbitrary code.\n(CVE-2022-1966)\n\nMinh Yuan discovered that the floppy driver in the Linux kernel contained a\nrace condition in some situations, 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-2022-1836)\n\nZiming Zhang discovered that the netfilter subsystem in the Linux kernel\ndid not properly validate sets with multiple ranged fields. A local\nattacker could use this to cause a denial of service or execute arbitrary\ncode. (CVE-2022-1972)\n","modified":"2026-02-10T04:42:39Z","published":"2022-06-08T05:01:06Z","related":["UBUNTU-CVE-2022-1836","UBUNTU-CVE-2022-1966","UBUNTU-CVE-2022-1972","UBUNTU-CVE-2022-21499"],"upstream":["CVE-2022-1836","CVE-2022-1966","CVE-2022-1972","CVE-2022-21499","UBUNTU-CVE-2022-1836","UBUNTU-CVE-2022-1966","UBUNTU-CVE-2022-1972","UBUNTU-CVE-2022-21499"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5470-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-1836"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-1966"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-1972"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-21499"}],"affected":[{"package":{"name":"linux-oem-5.14","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/linux-oem-5.14@5.14.0-1042.47?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.0-1042.47"}]}],"versions":["5.14.0-1004.4","5.14.0-1005.5","5.14.0-1007.7","5.14.0-1008.8","5.14.0-1010.10","5.14.0-1011.11","5.14.0-1013.13","5.14.0-1018.19","5.14.0-1020.22","5.14.0-1022.24","5.14.0-1024.26","5.14.0-1027.30","5.14.0-1029.32","5.14.0-1031.34","5.14.0-1032.35","5.14.0-1033.36","5.14.0-1034.37","5.14.0-1036.40","5.14.0-1038.42"],"ecosystem_specific":{"binaries":[{"binary_name":"linux-buildinfo-5.14.0-1042-oem","binary_version":"5.14.0-1042.47"},{"binary_name":"linux-headers-5.14.0-1042-oem","binary_version":"5.14.0-1042.47"},{"binary_name":"linux-image-unsigned-5.14.0-1042-oem","binary_version":"5.14.0-1042.47"},{"binary_name":"linux-modules-5.14.0-1042-oem","binary_version":"5.14.0-1042.47"},{"binary_name":"linux-modules-iwlwifi-5.14.0-1042-oem","binary_version":"5.14.0-1042.47"},{"binary_name":"linux-oem-5.14-headers-5.14.0-1042","binary_version":"5.14.0-1042.47"},{"binary_name":"linux-oem-5.14-tools-5.14.0-1042","binary_version":"5.14.0-1042.47"},{"binary_name":"linux-oem-5.14-tools-host","binary_version":"5.14.0-1042.47"},{"binary_name":"linux-tools-5.14.0-1042-oem","binary_version":"5.14.0-1042.47"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2022-1836","severity":[{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2022-1966","severity":[{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2022-1972","severity":[{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2022-21499","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]}],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5470-1.json"}}],"schema_version":"1.7.3"}