{"id":"USN-8818-3","summary":"linux-aws-5.15, linux-azure-5.15, linux-azure-fde-5.15, linux-intel-iotg-5.15 vulnerabilities","details":"It was discovered that some Arm processors could complete a broadcast\ntranslation lookaside buffer (TLB) invalidation before memory writes made\nthrough the invalidated translation were globally observed. A local\nattacker could possibly use this to write to memory after permission to do\nso had been revoked, bypassing memory protections or escalating privileges.\n(CVE-2025-10263)\n\nSeveral security issues were discovered in the Linux kernel.\nAn attacker could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  - ARM64 architecture;\n  - InfiniBand drivers;\n  - Network drivers;\n  - TCM subsystem;\n  - exFAT file system;\n  - Network file system (NFS) client;\n  - Network file system (NFS) server daemon;\n  - B.A.T.M.A.N. meshing protocol;\n  - IPv4 networking;\n  - IPv6 networking;\n  - Netfilter;\n  - RDS protocol;\n(CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354,\nCVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808,\nCVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922,\nCVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993,\nCVE-2026-63994, CVE-2026-64007, CVE-2026-64091)\n","modified":"2026-09-29T17:42:31.489088794Z","published":"2026-09-29T09:19:25Z","related":["UBUNTU-CVE-2025-10263","UBUNTU-CVE-2026-53186","UBUNTU-CVE-2026-53216","UBUNTU-CVE-2026-53221","UBUNTU-CVE-2026-53354","UBUNTU-CVE-2026-53355","UBUNTU-CVE-2026-53398","UBUNTU-CVE-2026-63800","UBUNTU-CVE-2026-63808","UBUNTU-CVE-2026-63887","UBUNTU-CVE-2026-63888","UBUNTU-CVE-2026-63912","UBUNTU-CVE-2026-63922","UBUNTU-CVE-2026-63924","UBUNTU-CVE-2026-63984","UBUNTU-CVE-2026-63992","UBUNTU-CVE-2026-63993","UBUNTU-CVE-2026-63994","UBUNTU-CVE-2026-64007","UBUNTU-CVE-2026-64091"],"upstream":["CVE-2025-10263","CVE-2026-53186","CVE-2026-53216","CVE-2026-53221","CVE-2026-53354","CVE-2026-53355","CVE-2026-53398","CVE-2026-63800","CVE-2026-63808","CVE-2026-63887","CVE-2026-63888","CVE-2026-63912","CVE-2026-63922","CVE-2026-63924","CVE-2026-63984","CVE-2026-63992","CVE-2026-63993","CVE-2026-63994","CVE-2026-64007","CVE-2026-64091","UBUNTU-CVE-2025-10263","UBUNTU-CVE-2026-53186","UBUNTU-CVE-2026-53216","UBUNTU-CVE-2026-53221","UBUNTU-CVE-2026-53354","UBUNTU-CVE-2026-53355","UBUNTU-CVE-2026-53398","UBUNTU-CVE-2026-63800","UBUNTU-CVE-2026-63808","UBUNTU-CVE-2026-63887","UBUNTU-CVE-2026-63888","UBUNTU-CVE-2026-63912","UBUNTU-CVE-2026-63922","UBUNTU-CVE-2026-63924","UBUNTU-CVE-2026-63984","UBUNTU-CVE-2026-63992","UBUNTU-CVE-2026-63993","UBUNTU-CVE-2026-63994","UBUNTU-CVE-2026-64007","UBUNTU-CVE-2026-64091"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8818-3"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-10263"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53186"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53216"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53221"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53354"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53355"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53398"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63800"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63808"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63887"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63888"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63912"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63922"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63924"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63984"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63992"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63993"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63994"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-64007"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-64091"}],"affected":[{"package":{"name":"linux-aws-5.15","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/linux-aws-5.15?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1116.123~20.04.1"}]}],"versions":["5.15.0-1014.18~20.04.1","5.15.0-1015.19~20.04.1","5.15.0-1017.21~20.04.1","5.15.0-1019.23~20.04.1","5.15.0-1020.24~20.04.1","5.15.0-1021.25~20.04.1","5.15.0-1022.26~20.04.1","5.15.0-1023.27~20.04.1","5.15.0-1026.30~20.04.2","5.15.0-1027.31~20.04.1","5.15.0-1028.32~20.04.1","5.15.0-1030.34~20.04.1","5.15.0-1031.35~20.04.1","5.15.0-1033.37~20.04.1","5.15.0-1034.38~20.04.1","5.15.0-1035.39~20.04.1","5.15.0-1036.40~20.04.1","5.15.0-1037.41~20.04.1","5.15.0-1038.43~20.04.1","5.15.0-1039.44~20.04.1","5.15.0-1040.45~20.04.1","5.15.0-1041.46~20.04.1","5.15.0-1043.48~20.04.1","5.15.0-1044.49~20.04.1","5.15.0-1045.50~20.04.1","5.15.0-1047.52~20.04.1","5.15.0-1048.53~20.04.1","5.15.0-1049.54~20.04.1","5.15.0-1050.55~20.04.1","5.15.0-1051.56~20.04.1","5.15.0-1052.57~20.04.1","5.15.0-1053.58~20.04.1","5.15.0-1055.60~20.04.1","5.15.0-1056.61~20.04.1","5.15.0-1057.63~20.04.1","5.15.0-1058.64~20.04.1","5.15.0-1061.67~20.04.1","5.15.0-1062.68~20.04.1","5.15.0-1063.69~20.04.1","5.15.0-1064.70~20.04.1","5.15.0-1065.71~20.04.1","5.15.0-1066.72~20.04.1","5.15.0-1067.73~20.04.1","5.15.0-1068.74~20.04.1","5.15.0-1069.75~20.04.1","5.15.0-1070.76~20.04.1","5.15.0-1071.77~20.04.1","5.15.0-1072.78~20.04.1","5.15.0-1073.79~20.04.1","5.15.0-1075.82~20.04.1","5.15.0-1077.84~20.04.1","5.15.0-1080.87~20.04.1","5.15.0-1081.88~20.04.1","5.15.0-1082.89~20.04.1","5.15.0-1083.90~20.04.1","5.15.0-1084.91~20.04.1","5.15.0-1086.93~20.04.1","5.15.0-1087.94~20.04.1","5.15.0-1088.95~20.04.1","5.15.0-1089.96~20.04.1","5.15.0-1090.97~20.04.1","5.15.0-1091.98~20.04.1","5.15.0-1092.99~20.04.1","5.15.0-1093.100~20.04.1","5.15.0-1095.102~20.04.1","5.15.0-1096.103~20.04.1","5.15.0-1097.104~20.04.1","5.15.0-1098.105~20.04.1","5.15.0-1099.106~20.04.1","5.15.0-1100.107~20.04.2","5.15.0-1101.108~20.04.1","5.15.0-1103.110~20.04.1","5.15.0-1104.111~20.04.1","5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with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"linux-aws-5.15-cloud-tools-5.15.0-1116","binary_version":"5.15.0-1116.123~20.04.1"},{"binary_name":"linux-aws-5.15-headers-5.15.0-1116","binary_version":"5.15.0-1116.123~20.04.1"},{"binary_version":"5.15.0-1116.123~20.04.1","binary_name":"linux-aws-5.15-tools-5.15.0-1116"},{"binary_name":"linux-buildinfo-5.15.0-1116-aws","binary_version":"5.15.0-1116.123~20.04.1"},{"binary_version":"5.15.0-1116.123~20.04.1","binary_name":"linux-cloud-tools-5.15.0-1116-aws"},{"binary_name":"linux-headers-5.15.0-1116-aws","binary_version":"5.15.0-1116.123~20.04.1"},{"binary_version":"5.15.0-1116.123~20.04.1","binary_name":"linux-image-unsigned-5.15.0-1116-aws"},{"binary_name":"linux-modules-5.15.0-1116-aws","binary_version":"5.15.0-1116.123~20.04.1"},{"binary_version":"5.15.0-1116.123~20.04.1","binary_name":"linux-modules-extra-5.15.0-1116-aws"},{"binary_name":"linux-tools-5.15.0-1116-aws","binary_version":"5.15.0-1116.123~20.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8818-3.json","cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/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:C/C:H/I:H/A:N","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"high"}],"id":"CVE-2025-10263"},{"severity":[{"type":"CVSS_V4","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_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-2026-53186"},{"id":"CVE-2026-53216","severity":[{"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":"low"}]},{"severity":[{"type":"CVSS_V4","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"},{"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-2026-53221"},{"id":"CVE-2026-53354","severity":[{"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":"medium"}]},{"id":"CVE-2026-53355","severity":[{"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-2026-53398","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"},{"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-2026-63800","severity":[{"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":"low"}]},{"id":"CVE-2026-63808","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/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:H/A:H"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-63887","severity":[{"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-2026-63888","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":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-63912","severity":[{"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"}]},{"severity":[{"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-2026-63922"},{"id":"CVE-2026-63924","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":"medium","type":"Ubuntu"}]},{"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":"medium","type":"Ubuntu"}],"id":"CVE-2026-63984"},{"id":"CVE-2026-63992","severity":[{"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-2026-63993","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":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-63994","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":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-64007","severity":[{"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-2026-64091","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:P/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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]}]}}},{"package":{"name":"linux-azure-5.15","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/linux-azure-5.15?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1122.131~20.04.1"}]}],"versions":["5.15.0-1007.8~20.04.1","5.15.0-1008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