{"id":"USN-8643-2","summary":"linux-gke, linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities","details":"Several security issues were discovered in the Linux kernel.\nAn attacker could possibly use these to compromise the system.\nThis update corrects flaws in the following subsystems:\n  - Network drivers;\n  - Open vSwitch;\n  - SCTP protocol;\n(CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531)\n","modified":"2026-08-21T05:42:48.190971570Z","published":"2026-08-20T21:32:40Z","related":["UBUNTU-CVE-2026-53224","UBUNTU-CVE-2026-53246","UBUNTU-CVE-2026-53247","UBUNTU-CVE-2026-64531"],"upstream":["CVE-2026-53224","CVE-2026-53246","CVE-2026-53247","CVE-2026-64531","UBUNTU-CVE-2026-53224","UBUNTU-CVE-2026-53246","UBUNTU-CVE-2026-53247","UBUNTU-CVE-2026-64531"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8643-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53224"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53246"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53247"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-64531"}],"affected":[{"package":{"name":"linux-lowlatency-hwe-6.8","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/linux-lowlatency-hwe-6.8?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.8.0-138.138.1~22.04.1"}]}],"versions":["6.8.0-38.38.1~22.04.2","6.8.0-40.40.1~22.04.1","6.8.0-44.44.1~22.04.1","6.8.0-45.45.1~22.04.1","6.8.0-47.47.1~22.04.1","6.8.0-48.48.3~22.04.1","6.8.0-49.49.1~22.04.1","6.8.0-50.51.1~22.04.1","6.8.0-51.52.1~22.04.1","6.8.0-52.53.1~22.04.1","6.8.0-54.56.1~22.04.1","6.8.0-55.57.1~22.04.1","6.8.0-56.58.1~22.04.1","6.8.0-57.59.1~22.04.1","6.8.0-58.60.1~22.04.1","6.8.0-59.61.1~22.04.1","6.8.0-60.63.1~22.04.1","6.8.0-62.65.1~22.04.1","6.8.0-63.66.1~22.04.1","6.8.0-64.67.1~22.04.1","6.8.0-65.68.1~22.04.1","6.8.0-78.78.1~22.04.1","6.8.0-79.79.1~22.04.1","6.8.0-83.83.1~22.04.1","6.8.0-84.84.1~22.04.1","6.8.0-85.85.1~22.04.1","6.8.0-86.87.1~22.04.1","6.8.0-87.88.1~22.04.1","6.8.0-88.89.1~22.04.1","6.8.0-90.91.1~22.04.1","6.8.0-94.96.1~22.04.1","6.8.0-100.100.1~22.04.1","6.8.0-101.101.1~22.04.1","6.8.0-106.106.1~22.04.1","6.8.0-107.107.1~22.04.1","6.8.0-110.110.1~22.04.1","6.8.0-111.111.1~22.04.1","6.8.0-117.117.1~22.04.1","6.8.0-134.134.1~22.04.1","6.8.0-136.136.2~22.04.1","6.8.0-137.137.1~22.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"linux-buildinfo-6.8.0-138-lowlatency","binary_version":"6.8.0-138.138.1~22.04.1"},{"binary_version":"6.8.0-138.138.1~22.04.1","binary_name":"linux-buildinfo-6.8.0-138-lowlatency-64k"},{"binary_name":"linux-cloud-tools-6.8.0-138-lowlatency","binary_version":"6.8.0-138.138.1~22.04.1"},{"binary_version":"6.8.0-138.138.1~22.04.1","binary_name":"linux-headers-6.8.0-138-lowlatency"},{"binary_name":"linux-headers-6.8.0-138-lowlatency-64k","binary_version":"6.8.0-138.138.1~22.04.1"},{"binary_name":"linux-image-unsigned-6.8.0-138-lowlatency","binary_version":"6.8.0-138.138.1~22.04.1"},{"binary_version":"6.8.0-138.138.1~22.04.1","binary_name":"linux-image-unsigned-6.8.0-138-lowlatency-64k"},{"binary_name":"linux-lowlatency-hwe-6.8-cloud-tools-6.8.0-138","binary_version":"6.8.0-138.138.1~22.04.1"},{"binary_name":"linux-lowlatency-hwe-6.8-headers-6.8.0-138","binary_version":"6.8.0-138.138.1~22.04.1"},{"binary_name":"linux-lowlatency-hwe-6.8-lib-rust-6.8.0-138-lowlatency","binary_version":"6.8.0-138.138.1~22.04.1"},{"binary_version":"6.8.0-138.138.1~22.04.1","binary_name":"linux-lowlatency-hwe-6.8-tools-6.8.0-138"},{"binary_version":"6.8.0-138.138.1~22.04.1","binary_name":"linux-modules-6.8.0-138-lowlatency"},{"binary_version":"6.8.0-138.138.1~22.04.1","binary_name":"linux-modules-6.8.0-138-lowlatency-64k"},{"binary_name":"linux-modules-iwlwifi-6.8.0-138-lowlatency","binary_version":"6.8.0-138.138.1~22.04.1"},{"binary_version":"6.8.0-138.138.1~22.04.1","binary_name":"linux-tools-6.8.0-138-lowlatency"},{"binary_name":"linux-tools-6.8.0-138-lowlatency-64k","binary_version":"6.8.0-138.138.1~22.04.1"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-53224","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]},{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-53246"},{"id":"CVE-2026-53247","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":"low","type":"Ubuntu"}]},{"id":"CVE-2026-64531","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"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"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8643-2.json"}},{"package":{"name":"linux-gke","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/linux-gke?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.8.0-1061.69"}]}],"versions":["6.8.0-1003.5","6.8.0-1004.7","6.8.0-1005.8","6.8.0-1006.9","6.8.0-1007.10","6.8.0-1008.11","6.8.0-1009.12","6.8.0-1010.13","6.8.0-1011.14","6.8.0-1012.15","6.8.0-1013.17","6.8.0-1014.18","6.8.0-1015.19","6.8.0-1016.20","6.8.0-1017.21","6.8.0-1019.23","6.8.0-1020.24","6.8.0-1021.25","6.8.0-1022.26","6.8.0-1023.27","6.8.0-1024.28","6.8.0-1025.29","6.8.0-1026.30","6.8.0-1027.31","6.8.0-1028.32","6.8.0-1029.33","6.8.0-1032.36","6.8.0-1033.37","6.8.0-1035.39","6.8.0-1036.40","6.8.0-1037.41","6.8.0-1038.43","6.8.0-1039.44","6.8.0-1040.45","6.8.0-1041.46","6.8.0-1042.47","6.8.0-1043.48","6.8.0-1044.49","6.8.0-1048.53","6.8.0-1049.54","6.8.0-1050.56","6.8.0-1051.57","6.8.0-1054.60","6.8.0-1055.61","6.8.0-1058.64","6.8.0-1059.67","6.8.0-1060.68"],"ecosystem_specific":{"availability":"No 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