{"id":"USN-5071-3","summary":"linux-raspi, linux-raspi-5.4 vulnerabilities","details":"It was discovered that the KVM hypervisor implementation in the Linux\nkernel did not properly perform reference counting in some situations,\nleading to a use-after-free vulnerability. An attacker who could start and\ncontrol a VM could possibly use this to expose sensitive information or\nexecute arbitrary code. (CVE-2021-22543)\n\nMurray McAllister discovered that the joystick device interface in the\nLinux kernel did not properly validate data passed via an ioctl(). A local\nattacker could use this to cause a denial of service (system crash) or\npossibly execute arbitrary code on systems with a joystick device\nregistered. (CVE-2021-3612)\n","modified":"2026-02-10T04:42:18Z","published":"2021-09-22T00:34:54Z","related":["UBUNTU-CVE-2021-22543","UBUNTU-CVE-2021-3612"],"upstream":["CVE-2021-22543","CVE-2021-3612","UBUNTU-CVE-2021-22543","UBUNTU-CVE-2021-3612"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5071-3"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3612"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-22543"}],"affected":[{"package":{"name":"linux-raspi-5.4","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/linux-raspi-5.4@5.4.0-1043.47~18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1043.47~18.04.1"}]}],"versions":["5.4.0-1013.13~18.04.1","5.4.0-1015.15~18.04.1","5.4.0-1016.17~18.04.1","5.4.0-1018.20~18.04.1","5.4.0-1019.21~18.04.1","5.4.0-1021.24~18.04.1","5.4.0-1022.25~18.04.1","5.4.0-1023.26~18.04.1","5.4.0-1025.28~18.04.1","5.4.0-1026.29~18.04.1","5.4.0-1028.31~18.04.1","5.4.0-1029.32~18.04.1","5.4.0-1030.33~18.04.1","5.4.0-1032.35~18.04.1","5.4.0-1033.36~18.04.1","5.4.0-1034.37~18.04.1","5.4.0-1035.38~18.04.1","5.4.0-1036.39~18.04.1","5.4.0-1038.41~18.04.1","5.4.0-1041.45~18.04.1","5.4.0-1042.46~18.04.3"],"ecosystem_specific":{"binaries":[{"binary_version":"5.4.0-1043.47~18.04.1","binary_name":"linux-buildinfo-5.4.0-1043-raspi"},{"binary_version":"5.4.0-1043.47~18.04.1","binary_name":"linux-headers-5.4.0-1043-raspi"},{"binary_version":"5.4.0-1043.47~18.04.1","binary_name":"linux-image-5.4.0-1043-raspi"},{"binary_version":"5.4.0-1043.47~18.04.1","binary_name":"linux-modules-5.4.0-1043-raspi"},{"binary_version":"5.4.0-1043.47~18.04.1","binary_name":"linux-raspi-5.4-headers-5.4.0-1043"},{"binary_version":"5.4.0-1043.47~18.04.1","binary_name":"linux-raspi-5.4-tools-5.4.0-1043"},{"binary_version":"5.4.0-1043.47~18.04.1","binary_name":"linux-tools-5.4.0-1043-raspi"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5071-3.json","cves_map":{"cves":[{"id":"CVE-2021-3612","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-2021-22543","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:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:18.04:LTS"}}},{"package":{"name":"linux-raspi","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/linux-raspi@5.4.0-1043.47?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1043.47"}]}],"versions":["5.4.0-1007.7","5.4.0-1008.8","5.4.0-1011.11","5.4.0-1012.12","5.4.0-1013.13","5.4.0-1015.15","5.4.0-1016.17","5.4.0-1018.20","5.4.0-1019.21","5.4.0-1021.24","5.4.0-1022.25","5.4.0-1023.26","5.4.0-1025.28","5.4.0-1026.29","5.4.0-1028.31","5.4.0-1029.32","5.4.0-1030.33","5.4.0-1032.35","5.4.0-1033.36","5.4.0-1034.37","5.4.0-1035.38","5.4.0-1036.39","5.4.0-1038.41","5.4.0-1041.45","5.4.0-1042.46"],"ecosystem_specific":{"binaries":[{"binary_version":"5.4.0-1043.47","binary_name":"linux-buildinfo-5.4.0-1043-raspi"},{"binary_version":"5.4.0-1043.47","binary_name":"linux-headers-5.4.0-1043-raspi"},{"binary_version":"5.4.0-1043.47","binary_name":"linux-image-5.4.0-1043-raspi"},{"binary_version":"5.4.0-1043.47","binary_name":"linux-modules-5.4.0-1043-raspi"},{"binary_version":"5.4.0-1043.47","binary_name":"linux-raspi-headers-5.4.0-1043"},{"binary_version":"5.4.0-1043.47","binary_name":"linux-raspi-tools-5.4.0-1043"},{"binary_version":"5.4.0-1043.47","binary_name":"linux-tools-5.4.0-1043-raspi"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5071-3.json","cves_map":{"cves":[{"id":"CVE-2021-3612","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-2021-22543","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:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:20.04:LTS"}}}],"schema_version":"1.7.3"}