{"id":"USN-6324-1","summary":"linux-gkeop vulnerabilities","details":"Daniel Moghimi discovered that some Intel(R) Processors did not properly\nclear microarchitectural state after speculative execution of various\ninstructions. A local unprivileged user could use this to obtain to\nsensitive information. (CVE-2022-40982)\n\nTavis Ormandy discovered that some AMD processors did not properly handle\nspeculative execution of certain vector register instructions. A local\nattacker could use this to expose sensitive information. (CVE-2023-20593)\n\nIt was discovered that the universal 32bit network packet classifier\nimplementation in the Linux kernel did not properly perform reference\ncounting in some situations, leading to a use-after-free vulnerability. A\nlocal attacker could use this to cause a denial of service (system crash)\nor possibly execute arbitrary code. (CVE-2023-3609)\n\nIt was discovered that the Quick Fair Queueing network scheduler\nimplementation in the Linux kernel contained an out-of-bounds write\nvulnerability. A local attacker could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-3611)\n\nIt was discovered that the network packet classifier with\nnetfilter/firewall marks implementation in the Linux kernel did not\nproperly handle reference counting, 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-2023-3776)\n\n","modified":"2026-04-27T16:29:52.874401Z","published":"2023-08-31T13:23:41Z","related":["UBUNTU-CVE-2022-40982","UBUNTU-CVE-2023-20593","UBUNTU-CVE-2023-3609","UBUNTU-CVE-2023-3611","UBUNTU-CVE-2023-3776"],"upstream":["CVE-2022-40982","CVE-2023-20593","CVE-2023-3609","CVE-2023-3611","CVE-2023-3776","UBUNTU-CVE-2022-40982","UBUNTU-CVE-2023-20593","UBUNTU-CVE-2023-3609","UBUNTU-CVE-2023-3611","UBUNTU-CVE-2023-3776"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6324-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-40982"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-3609"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-3611"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-3776"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-20593"}],"affected":[{"package":{"name":"linux-gkeop","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/linux-gkeop@5.4.0-1075.79?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1075.79"}]}],"versions":["5.4.0-1008.9","5.4.0-1009.10","5.4.0-1010.11","5.4.0-1011.12","5.4.0-1012.13","5.4.0-1013.14","5.4.0-1014.15","5.4.0-1015.16","5.4.0-1016.17","5.4.0-1018.19","5.4.0-1021.22","5.4.0-1022.23","5.4.0-1023.24","5.4.0-1024.25","5.4.0-1025.26","5.4.0-1026.27","5.4.0-1027.28","5.4.0-1029.30","5.4.0-1031.32","5.4.0-1032.33","5.4.0-1033.34","5.4.0-1034.35","5.4.0-1036.37","5.4.0-1037.38","5.4.0-1038.39","5.4.0-1039.40","5.4.0-1040.41","5.4.0-1043.44","5.4.0-1046.48","5.4.0-1048.51","5.4.0-1049.52","5.4.0-1051.54","5.4.0-1052.55","5.4.0-1053.56","5.4.0-1054.57","5.4.0-1056.60","5.4.0-1057.61","5.4.0-1060.64","5.4.0-1061.65","5.4.0-1062.66","5.4.0-1064.68","5.4.0-1065.69","5.4.0-1066.70","5.4.0-1067.71","5.4.0-1068.72","5.4.0-1069.73","5.4.0-1070.74","5.4.0-1071.75","5.4.0-1072.76","5.4.0-1073.77","5.4.0-1074.78"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"5.4.0-1075.79","binary_name":"linux-buildinfo-5.4.0-1075-gkeop"},{"binary_version":"5.4.0-1075.79","binary_name":"linux-cloud-tools-5.4.0-1075-gkeop"},{"binary_version":"5.4.0-1075.79","binary_name":"linux-gkeop-cloud-tools-5.4.0-1075"},{"binary_version":"5.4.0-1075.79","binary_name":"linux-gkeop-headers-5.4.0-1075"},{"binary_version":"5.4.0-1075.79","binary_name":"linux-gkeop-source-5.4.0"},{"binary_version":"5.4.0-1075.79","binary_name":"linux-gkeop-tools-5.4.0-1075"},{"binary_version":"5.4.0-1075.79","binary_name":"linux-headers-5.4.0-1075-gkeop"},{"binary_version":"5.4.0-1075.79","binary_name":"linux-image-unsigned-5.4.0-1075-gkeop"},{"binary_version":"5.4.0-1075.79","binary_name":"linux-modules-5.4.0-1075-gkeop"},{"binary_version":"5.4.0-1075.79","binary_name":"linux-modules-extra-5.4.0-1075-gkeop"},{"binary_version":"5.4.0-1075.79","binary_name":"linux-tools-5.4.0-1075-gkeop"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6324-1.json","cves_map":{"cves":[{"id":"CVE-2022-40982","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2023-3609","severity":[{"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":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2023-3611","severity":[{"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":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2023-3776","severity":[{"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":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2023-20593","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"high"}]}],"ecosystem":"Ubuntu:20.04:LTS"}}}],"schema_version":"1.7.5"}