{"id":"USN-8439-1","summary":"linux-oracle-5.15 vulnerabilities","details":"Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS\nimplementation in the Ubuntu Linux kernel did not properly perform\npermission checks in certain situations. A local attacker could possibly\nuse this to gain elevated privileges. (CVE-2023-2640)\n\nShir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in\nthe Ubuntu Linux kernel did not properly perform permission checks in\ncertain situations. A local attacker could possibly use this to gain\nelevated privileges. (CVE-2023-32629)\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  - Network drivers;\n  - NVME drivers;\n  - SMB network file system;\n  - Netfilter;\n  - io_uring subsystem;\n(CVE-2024-35862, CVE-2024-50060, CVE-2026-23112, CVE-2026-23273,\nCVE-2026-23274, CVE-2026-23351)\n","modified":"2026-06-17T02:14:32.379732873Z","published":"2026-06-16T19:54:11Z","related":["UBUNTU-CVE-2023-2640","UBUNTU-CVE-2023-32629","UBUNTU-CVE-2024-35862","UBUNTU-CVE-2024-50060","UBUNTU-CVE-2026-23112","UBUNTU-CVE-2026-23273","UBUNTU-CVE-2026-23274","UBUNTU-CVE-2026-23351"],"upstream":["CVE-2023-2640","CVE-2023-32629","CVE-2024-35862","CVE-2024-50060","CVE-2026-23112","CVE-2026-23273","CVE-2026-23274","CVE-2026-23351","UBUNTU-CVE-2023-2640","UBUNTU-CVE-2023-32629","UBUNTU-CVE-2024-35862","UBUNTU-CVE-2024-50060","UBUNTU-CVE-2026-23112","UBUNTU-CVE-2026-23273","UBUNTU-CVE-2026-23274","UBUNTU-CVE-2026-23351"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8439-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-2640"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-32629"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-35862"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-50060"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23112"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23273"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23274"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23351"}],"affected":[{"package":{"name":"linux-oracle-5.15","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/linux-oracle-5.15?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1104.110~20.04.1"}]}],"versions":["5.15.0-1007.9~20.04.1","5.15.0-1013.17~20.04.1","5.15.0-1016.20~20.04.1","5.15.0-1017.22~20.04.1","5.15.0-1018.23~20.04.1","5.15.0-1019.24~20.04.1","5.15.0-1021.27~20.04.1","5.15.0-1022.28~20.04.1","5.15.0-1025.31~20.04.2","5.15.0-1027.33~20.04.1","5.15.0-1029.35~20.04.1","5.15.0-1030.36~20.04.1","5.15.0-1032.38~20.04.1","5.15.0-1033.39~20.04.1","5.15.0-1034.40~20.04.1","5.15.0-1035.41~20.04.1","5.15.0-1036.42~20.04.1","5.15.0-1037.43~20.04.1","5.15.0-1038.44~20.04.1","5.15.0-1039.45~20.04.1","5.15.0-1040.46~20.04.1","5.15.0-1041.47~20.04.1","5.15.0-1042.48~20.04.1","5.15.0-1044.50~20.04.1","5.15.0-1045.51~20.04.1","5.15.0-1046.52~20.04.1","5.15.0-1047.53~20.04.1","5.15.0-1048.54~20.04.1","5.15.0-1049.55~20.04.1","5.15.0-1050.56~20.04.1","5.15.0-1051.57~20.04.1","5.15.0-1052.58~20.04.1","5.15.0-1053.59~20.04.1","5.15.0-1054.60~20.04.1","5.15.0-1055.61~20.04.1","5.15.0-1058.64~20.04.1","5.15.0-1059.65~20.04.1","5.15.0-1061.67~20.04.1","5.15.0-1062.68~20.04.1","5.15.0-1063.69~20.04.1","5.15.0-1065.71~20.04.1","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","5.15.0-1074.80~20.04.1","5.15.0-1075.81~20.04.1","5.15.0-1076.82~20.04.1","5.15.0-1077.83~20.04.1","5.15.0-1078.84~20.04.1","5.15.0-1079.85~20.04.1","5.15.0-1080.86~20.04.1","5.15.0-1081.87~20.04.1","5.15.0-1083.89~20.04.1","5.15.0-1084.90~20.04.1","5.15.0-1085.91~20.04.3","5.15.0-1086.92~20.04.1","5.15.0-1088.94~20.04.1","5.15.0-1090.96~20.04.1","5.15.0-1091.97~20.04.1","5.15.0-1092.98~20.04.1","5.15.0-1093.99~20.04.1","5.15.0-1094.100~20.04.1","5.15.0-1095.101~20.04.1","5.15.0-1096.102~20.04.1","5.15.0-1097.103~20.04.1","5.15.0-1098.104~20.04.1","5.15.0-1100.106~20.04.1","5.15.0-1101.107~20.04.1","5.15.0-1102.108~20.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"linux-buildinfo-5.15.0-1104-oracle","binary_version":"5.15.0-1104.110~20.04.1"},{"binary_name":"linux-headers-5.15.0-1104-oracle","binary_version":"5.15.0-1104.110~20.04.1"},{"binary_name":"linux-image-unsigned-5.15.0-1104-oracle","binary_version":"5.15.0-1104.110~20.04.1"},{"binary_name":"linux-modules-5.15.0-1104-oracle","binary_version":"5.15.0-1104.110~20.04.1"},{"binary_name":"linux-modules-extra-5.15.0-1104-oracle","binary_version":"5.15.0-1104.110~20.04.1"},{"binary_name":"linux-oracle-5.15-headers-5.15.0-1104","binary_version":"5.15.0-1104.110~20.04.1"},{"binary_name":"linux-oracle-5.15-tools-5.15.0-1104","binary_version":"5.15.0-1104.110~20.04.1"},{"binary_name":"linux-tools-5.15.0-1104-oracle","binary_version":"5.15.0-1104.110~20.04.1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2023-2640","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"}]},{"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-2023-32629"},{"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-2024-35862"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2024-50060"},{"id":"CVE-2026-23112","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":"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"}]},{"id":"CVE-2026-23273","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-2026-23274","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"}]},{"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-2026-23351"}],"ecosystem":"Ubuntu:Pro:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8439-1.json"}}],"schema_version":"1.7.5"}