{"id":"USN-8530-2","summary":"linux-aws-hwe vulnerabilities","details":"It was discovered that the Linux kernel did not properly handle shared page\nfragments during socket buffer operations, collectively known as Dirty\nFrag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the\nRxRPC networking subsystem when processing paged fragments. A local\nattacker could use this to escalate privileges, or possibly escape a\ncontainer. (CVE-2026-43284)\n\nIt was discovered that a logic flaw existed in the XFRM ESP-in-TCP\nsubsystem in the Linux kernel when handling socket buffer fragments. This\nflaw is known as Fragnesia. A local attacker could use this to escalate\nprivileges, or possibly escape a container. (CVE-2026-43503)\n\nSeveral 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  - InfiniBand drivers;\n  - SCSI subsystem;\n  - Thermal drivers;\n  - USB over IP driver;\n  - Network file system (NFS) server daemon;\n  - SMB network file system;\n  - Tracing infrastructure;\n  - B.A.T.M.A.N. meshing protocol;\n  - Ethernet bridge;\n  - Ceph Core library;\n  - DCCP (Datagram Congestion Control Protocol);\n  - IPv4 networking;\n  - IPv6 networking;\n  - Netfilter;\n  - RxRPC session sockets;\n  - X.25 network layer;\n(CVE-2021-47202, CVE-2024-56643, CVE-2026-23272, CVE-2026-23455,\nCVE-2026-31402, CVE-2026-31607, CVE-2026-31637, CVE-2026-31659,\nCVE-2026-31682, CVE-2026-31685, CVE-2026-43011, CVE-2026-43037,\nCVE-2026-43038, CVE-2026-43383, CVE-2026-43407, CVE-2026-43414,\nCVE-2026-45988, CVE-2026-46043, CVE-2026-46119, CVE-2026-46243)\n","modified":"2026-08-14T06:44:17.026235400Z","published":"2026-08-13T21:10:27Z","related":["UBUNTU-CVE-2021-47202","UBUNTU-CVE-2024-56643","UBUNTU-CVE-2026-23272","UBUNTU-CVE-2026-23455","UBUNTU-CVE-2026-31402","UBUNTU-CVE-2026-31607","UBUNTU-CVE-2026-31637","UBUNTU-CVE-2026-31659","UBUNTU-CVE-2026-31682","UBUNTU-CVE-2026-31685","UBUNTU-CVE-2026-43011","UBUNTU-CVE-2026-43037","UBUNTU-CVE-2026-43038","UBUNTU-CVE-2026-43284","UBUNTU-CVE-2026-43383","UBUNTU-CVE-2026-43407","UBUNTU-CVE-2026-43414","UBUNTU-CVE-2026-43503","UBUNTU-CVE-2026-45988","UBUNTU-CVE-2026-46043","UBUNTU-CVE-2026-46119","UBUNTU-CVE-2026-46243"],"upstream":["CVE-2021-47202","CVE-2024-56643","CVE-2026-23272","CVE-2026-23455","CVE-2026-31402","CVE-2026-31607","CVE-2026-31637","CVE-2026-31659","CVE-2026-31682","CVE-2026-31685","CVE-2026-43011","CVE-2026-43037","CVE-2026-43038","CVE-2026-43284","CVE-2026-43383","CVE-2026-43407","CVE-2026-43414","CVE-2026-43503","CVE-2026-45988","CVE-2026-46043","CVE-2026-46119","CVE-2026-46243","UBUNTU-CVE-2021-47202","UBUNTU-CVE-2024-56643","UBUNTU-CVE-2026-23272","UBUNTU-CVE-2026-23455","UBUNTU-CVE-2026-31402","UBUNTU-CVE-2026-31607","UBUNTU-CVE-2026-31637","UBUNTU-CVE-2026-31659","UBUNTU-CVE-2026-31682","UBUNTU-CVE-2026-31685","UBUNTU-CVE-2026-43011","UBUNTU-CVE-2026-43037","UBUNTU-CVE-2026-43038","UBUNTU-CVE-2026-43284","UBUNTU-CVE-2026-43383","UBUNTU-CVE-2026-43407","UBUNTU-CVE-2026-43414","UBUNTU-CVE-2026-43503","UBUNTU-CVE-2026-45988","UBUNTU-CVE-2026-46043","UBUNTU-CVE-2026-46119","UBUNTU-CVE-2026-46243"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8530-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-47202"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-56643"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23272"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23455"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31402"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31607"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31637"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31659"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31682"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31685"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43011"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43037"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43038"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43284"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43383"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43407"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43414"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43503"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-45988"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-46043"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-46119"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-46243"}],"affected":[{"package":{"name":"linux-aws-hwe","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/linux-aws-hwe?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-1194.207~16.04.1"}]}],"versions":["4.15.0-1030.31~16.04.1","4.15.0-1031.33~16.04.1","4.15.0-1032.34~16.04.1","4.15.0-1033.35~16.04.1","4.15.0-1035.37~16.04.1","4.15.0-1036.38~16.04.1","4.15.0-1039.41~16.04.1","4.15.0-1040.42~16.04.1","4.15.0-1041.43~16.04.1","4.15.0-1043.45~16.04.1","4.15.0-1044.46~16.04.1","4.15.0-1045.47~16.04.1","4.15.0-1047.49~16.04.1","4.15.0-1048.50~16.04.1","4.15.0-1050.52~16.04.1","4.15.0-1051.53~16.04.1","4.15.0-1052.54~16.04.1","4.15.0-1054.56~16.04.1","4.15.0-1056.58~16.04.1","4.15.0-1057.59~16.04.1","4.15.0-1058.60~16.04.1","4.15.0-1060.62~16.04.1","4.15.0-1063.67~16.04.1","4.15.0-1065.69~16.04.1","4.15.0-1066.70~16.04.1","4.15.0-1067.71~16.04.1","4.15.0-1073.77~16.04.1","4.15.0-1074.78~16.04.1","4.15.0-1079.83~16.04.1","4.15.0-1080.84~16.04.1","4.15.0-1082.86~16.04.1","4.15.0-1083.87~16.04.1","4.15.0-1085.90~16.04.1","4.15.0-1088.93~16.04.1","4.15.0-1090.95~16.04.1","4.15.0-1091.96~16.04.1","4.15.0-1093.99~16.04.1","4.15.0-1094.101~16.04.1","4.15.0-1095.102~16.04.1","4.15.0-1096.103~16.04.1","4.15.0-1097.104~16.04.1","4.15.0-1098.105~16.04.1","4.15.0-1099.106~16.04.1","4.15.0-1102.109~16.04.1","4.15.0-1103.110~16.04.1","4.15.0-1106.113~16.04.1","4.15.0-1109.116~16.04.1","4.15.0-1110.117~16.04.1","4.15.0-1111.118~16.04.1","4.15.0-1112.119~16.04.1","4.15.0-1113.120~16.04.1","4.15.0-1115.122~16.04.1","4.15.0-1116.123~16.04.1","4.15.0-1118.125~16.04.1","4.15.0-1119.126~16.04.2","4.15.0-1120.128~16.04.1","4.15.0-1123.132~16.04.1","4.15.0-1124.133~16.04.1","4.15.0-1126.135~16.04.2","4.15.0-1127.136~16.04.1","4.15.0-1128.137~16.04.1","4.15.0-1130.1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with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2021-47202"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2024-56643"},{"id":"CVE-2026-23272","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":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23455","severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:N/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"},{"score":"high","type":"Ubuntu"}]},{"id":"CVE-2026-31402","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/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"},{"score":"critical","type":"Ubuntu"}]},{"id":"CVE-2026-31607","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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:L/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":"high"}]},{"severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"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-2026-31637"},{"id":"CVE-2026-31659","severity":[{"score":"CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/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:H/A:H"},{"score":"high","type":"Ubuntu"}]},{"severity":[{"score":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"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":"medium"}],"id":"CVE-2026-31682"},{"id":"CVE-2026-31685","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/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-2026-43011","severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/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:H/A:H"},{"score":"critical","type":"Ubuntu"}]},{"id":"CVE-2026-43037","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"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-2026-43038","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H","type":"CVSS_V3"},{"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-2026-43284","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/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":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2026-43383","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/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:L/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-43407","severity":[{"type":"CVSS_V4","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_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},{"score":"high","type":"Ubuntu"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2026-43414"},{"severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/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:C/C:H/I:H/A:H"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2026-43503"},{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"critical"}],"id":"CVE-2026-45988"},{"id":"CVE-2026-46043","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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":"critical"}]},{"id":"CVE-2026-46119","severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"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"}]},{"id":"CVE-2026-46243","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/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":"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:N"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8530-2.json"}}],"schema_version":"1.9.0"}