{"id":"USN-8850-1","summary":"linux-bluefield 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 file system (NFS) server daemon;\n  - OCFS2 file system;\n  - IPv6 networking;\n  - Netfilter;\n  - SCTP protocol;\n(CVE-2025-38724, CVE-2026-53043, CVE-2026-53131, CVE-2026-53221,\nCVE-2026-53224, CVE-2026-53225, CVE-2026-53246, CVE-2026-53309)\n","modified":"2026-09-30T18:41:41.252460183Z","published":"2026-09-30T08:10:36Z","related":["UBUNTU-CVE-2025-38724","UBUNTU-CVE-2026-53043","UBUNTU-CVE-2026-53131","UBUNTU-CVE-2026-53221","UBUNTU-CVE-2026-53224","UBUNTU-CVE-2026-53225","UBUNTU-CVE-2026-53246","UBUNTU-CVE-2026-53309"],"upstream":["CVE-2025-38724","CVE-2026-53043","CVE-2026-53131","CVE-2026-53221","CVE-2026-53224","CVE-2026-53225","CVE-2026-53246","CVE-2026-53309","UBUNTU-CVE-2025-38724","UBUNTU-CVE-2026-53043","UBUNTU-CVE-2026-53131","UBUNTU-CVE-2026-53221","UBUNTU-CVE-2026-53224","UBUNTU-CVE-2026-53225","UBUNTU-CVE-2026-53246","UBUNTU-CVE-2026-53309"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8850-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-38724"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53043"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53131"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53221"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53224"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53225"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53246"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53309"}],"affected":[{"package":{"name":"linux-bluefield","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/linux-bluefield?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-1123.130"}]}],"versions":["5.4.0-1007.10","5.4.0-1011.14","5.4.0-1012.15","5.4.0-1013.16","5.4.0-1016.19","5.4.0-1019.22","5.4.0-1020.23","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","5.4.0-1030.33","5.4.0-1032.35","5.4.0-1035.38","5.4.0-1036.39","5.4.0-1040.44","5.4.0-1042.47","5.4.0-1044.49","5.4.0-1045.50","5.4.0-1046.51","5.4.0-1047.52","5.4.0-1049.55","5.4.0-1050.56","5.4.0-1054.60","5.4.0-1058.64","5.4.0-1059.65","5.4.0-1060.66","5.4.0-1062.68","5.4.0-1064.70","5.4.0-1065.71","5.4.0-1066.72","5.4.0-1068.74","5.4.0-1070.76","5.4.0-1071.77","5.4.0-1072.78","5.4.0-1073.79","5.4.0-1074.80","5.4.0-1075.81","5.4.0-1076.82","5.4.0-1077.83","5.4.0-1078.84","5.4.0-1079.85","5.4.0-1080.87","5.4.0-1081.88","5.4.0-1082.89","5.4.0-1083.90","5.4.0-1084.91","5.4.0-1085.92","5.4.0-1086.93","5.4.0-1087.94","5.4.0-1088.95","5.4.0-1089.96","5.4.0-1090.97","5.4.0-1091.98","5.4.0-1092.99","5.4.0-1093.100","5.4.0-1094.101","5.4.0-1095.102","5.4.0-1096.103","5.4.0-1097.104","5.4.0-1098.105","5.4.0-1099.106","5.4.0-1101.108","5.4.0-1102.109","5.4.0-1103.110","5.4.0-1105.112","5.4.0-1106.113","5.4.0-1107.114","5.4.0-1108.115","5.4.0-1109.116","5.4.0-1110.117","5.4.0-1111.118","5.4.0-1112.119","5.4.0-1116.123","5.4.0-1117.124","5.4.0-1118.125","5.4.0-1119.126","5.4.0-1120.127","5.4.0-1121.128"],"ecosystem_specific":{"binaries":[{"binary_version":"5.4.0-1123.130","binary_name":"linux-bluefield-headers-5.4.0-1123"},{"binary_version":"5.4.0-1123.130","binary_name":"linux-bluefield-tools-5.4.0-1123"},{"binary_name":"linux-buildinfo-5.4.0-1123-bluefield","binary_version":"5.4.0-1123.130"},{"binary_version":"5.4.0-1123.130","binary_name":"linux-headers-5.4.0-1123-bluefield"},{"binary_version":"5.4.0-1123.130","binary_name":"linux-image-unsigned-5.4.0-1123-bluefield"},{"binary_name":"linux-modules-5.4.0-1123-bluefield","binary_version":"5.4.0-1123.130"},{"binary_name":"linux-tools-5.4.0-1123-bluefield","binary_version":"5.4.0-1123.130"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8850-1.json","cves_map":{"cves":[{"id":"CVE-2025-38724","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/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"},{"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":"critical"}]},{"id":"CVE-2026-53043","severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2026-53131","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-53221","severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"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"},{"type":"Ubuntu","score":"high"}],"id":"CVE-2026-53224"},{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/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"},{"type":"Ubuntu","score":"negligible"}],"id":"CVE-2026-53225"},{"id":"CVE-2026-53246","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"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-53309","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:Pro:20.04:LTS"}}}],"schema_version":"1.9.0"}