{"id":"USN-6440-2","summary":"linux-azure vulnerabilities","details":"Seth Jenkins discovered that the Linux kernel did not properly perform\naddress randomization for a per-cpu memory management structure. A local\nattacker could use this to expose sensitive information (kernel memory) or\nin conjunction with another kernel vulnerability. (CVE-2023-0597)\n\nIt was discovered that the IPv6 implementation in the Linux kernel\ncontained a high rate of hash collisions in connection lookup table. A\nremote attacker could use this to cause a denial of service (excessive CPU\nconsumption). (CVE-2023-1206)\n\nYu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in\nthe Linux kernel contained a race condition, leading to a null pointer\ndereference vulnerability. A local attacker could use this to cause a\ndenial of service (system crash). (CVE-2023-31083)\n\nRoss Lagerwall discovered that the Xen netback backend driver in the Linux\nkernel did not properly handle certain unusual packets from a\nparavirtualized network frontend, leading to a buffer overflow. An attacker\nin a guest VM could use this to cause a denial of service (host system\ncrash) or possibly execute arbitrary code. (CVE-2023-34319)\n\nLin Ma discovered that the Netlink Transformation (XFRM) subsystem in the\nLinux kernel contained a null pointer dereference vulnerability in some\nsituations. A local privileged attacker could use this to cause a denial of\nservice (system crash). (CVE-2023-3772)\n\nKyle Zeng discovered that the networking stack implementation in the Linux\nkernel did not properly validate skb object size in certain conditions. An\nattacker could use this cause a denial of service (system crash) or\npossibly execute arbitrary code. (CVE-2023-42752)\n\nKyle Zeng discovered that the netfiler subsystem in the Linux kernel did\nnot properly calculate array offsets, leading to a out-of-bounds write\nvulnerability. A local user could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-42753)\n\nKyle Zeng discovered that the IPv4 Resource Reservation Protocol (RSVP)\nclassifier implementation in the Linux kernel contained an out-of-bounds\nread vulnerability. A local attacker could use this to cause a denial of\nservice (system crash). Please note that kernel packet classifier support\nfor RSVP has been removed to resolve this vulnerability. (CVE-2023-42755)\n\nBing-Jhong Billy Jheng discovered that the Unix domain socket\nimplementation in the Linux kernel contained a race condition in certain\nsituations, leading to a use-after-free vulnerability. A local attacker\ncould use this to cause a denial of service (system crash) or possibly\nexecute arbitrary code. (CVE-2023-4622)\n\nBudimir Markovic discovered that the qdisc implementation in the Linux\nkernel did not properly validate inner classes, leading to a use-after-free\nvulnerability. A local user could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-4623)\n\nAlex Birnberg discovered that the netfilter subsystem in the Linux kernel\ndid not properly validate register length, leading to an out-of- bounds\nwrite vulnerability. A local attacker could possibly use this to cause a\ndenial of service (system crash). (CVE-2023-4881)\n\nIt was discovered that the Quick Fair Queueing scheduler implementation in\nthe Linux kernel did not properly handle network packets in certain\nconditions, leading to a use after free vulnerability. A local attacker\ncould use this to cause a denial of service (system crash) or possibly\nexecute arbitrary code. (CVE-2023-4921)\n","modified":"2026-02-10T04:43:23Z","published":"2023-10-20T12:33:28Z","related":["UBUNTU-CVE-2023-0597","UBUNTU-CVE-2023-1206","UBUNTU-CVE-2023-31083","UBUNTU-CVE-2023-34319","UBUNTU-CVE-2023-3772","UBUNTU-CVE-2023-42752","UBUNTU-CVE-2023-42753","UBUNTU-CVE-2023-42755","UBUNTU-CVE-2023-4622","UBUNTU-CVE-2023-4623","UBUNTU-CVE-2023-4881","UBUNTU-CVE-2023-4921"],"upstream":["CVE-2023-0597","CVE-2023-1206","CVE-2023-31083","CVE-2023-34319","CVE-2023-3772","CVE-2023-42752","CVE-2023-42753","CVE-2023-42755","CVE-2023-4622","CVE-2023-4623","CVE-2023-4881","CVE-2023-4921","UBUNTU-CVE-2023-0597","UBUNTU-CVE-2023-1206","UBUNTU-CVE-2023-31083","UBUNTU-CVE-2023-34319","UBUNTU-CVE-2023-3772","UBUNTU-CVE-2023-42752","UBUNTU-CVE-2023-42753","UBUNTU-CVE-2023-42755","UBUNTU-CVE-2023-4622","UBUNTU-CVE-2023-4623","UBUNTU-CVE-2023-4881","UBUNTU-CVE-2023-4921"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6440-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-0597"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-1206"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-3772"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-4622"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-4623"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-4881"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-4921"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-31083"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-34319"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-42752"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-42753"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-42755"}],"affected":[{"package":{"name":"linux-azure","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/linux-azure@4.15.0-1171.186~14.04.1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-1171.186~14.04.1"}]}],"versions":["4.15.0-1023.24~14.04.1","4.15.0-1030.31~14.04.1","4.15.0-1031.32~14.04.1","4.15.0-1032.33~14.04.2","4.15.0-1035.36~14.04.2","4.15.0-1036.38~14.04.2","4.15.0-1037.39~14.04.2","4.15.0-1039.41~14.04.2","4.15.0-1040.44~14.04.1","4.15.0-1041.45~14.04.1","4.15.0-1042.46~14.04.1","4.15.0-1045.49~14.04.1","4.15.0-1046.50~14.04.1","4.15.0-1047.51~14.04.1","4.15.0-1049.54~14.04.1","4.15.0-1050.55~14.04.1","4.15.0-1051.56~14.04.1","4.15.0-1052.57~14.04.1","4.15.0-1055.60~14.04.1","4.15.0-1056.61~14.04.1","4.15.0-1057.62~14.04.1","4.15.0-1059.64~14.04.1","4.15.0-1060.65~14.04.1","4.15.0-1061.66~14.04.1","4.15.0-1063.68~14.04.1","4.15.0-1064.69~14.04.1","4.15.0-1066.71~14.04.1","4.15.0-1067.72~14.04.1","4.15.0-1069.74~14.04.1","4.15.0-1071.76~14.04.1","4.15.0-1074.79~14.04.1","4.15.0-1077.82~14.04.1","4.15.0-1082.92~14.04.1","4.15.0-1083.93~14.04.1","4.15.0-1089.99~14.04.1","4.15.0-1091.101~14.04.1","4.15.0-1092.102~14.04.1","4.15.0-1093.103~14.04.1","4.15.0-1095.105~14.04.1","4.15.0-1096.106~14.04.1","4.15.0-1098.109~14.04.1","4.15.0-1100.111~14.04.1","4.15.0-1102.113~14.04.1","4.15.0-1103.114~14.04.1","4.15.0-1106.118~14.04.1","4.15.0-1108.120~14.04.1","4.15.0-1109.121~14.04.1","4.15.0-1110.122~14.04.1","4.15.0-1111.123~14.04.1","4.15.0-1112.124~14.04.1","4.15.0-1113.126~14.04.1","4.15.0-1114.127~14.04.1","4.15.0-1115.128~14.04.1","4.15.0-1118.131~14.04.1","4.15.0-1121.134~14.04.1","4.15.0-1122.135~14.04.1","4.15.0-1123.136~14.04.1","4.15.0-1124.137~14.04.1","4.15.0-1125.138~14.04.1","4.15.0-1126.139~14.04.1","4.15.0-1127.140~14.04.1","4.15.0-1129.142~14.04.1","4.15.0-1130.143~14.04.1","4.15.0-1131.144~14.04.1","4.15.0-1133.146~14.04.1","4.15.0-1134.147~14.04.1","4.15.0-1136.149~14.04.1","4.15.0-1137.150~14.04.1","4.15.0-1138.151~14.04.1","4.15.0-1139.152~14.04.1","4.15.0-1142.156~14.04.1","4.15.0-1145.160~14.04.1","4.15.0-1146.161~14.04.1","4.15.0-1149.164~14.04.1","4.15.0-1150.165~14.04.1","4.15.0-1151.166~14.04.1","4.15.0-1153.168~14.04.1","4.15.0-1157.172~14.04.2","4.15.0-1158.173~14.04.1","4.15.0-1159.174~14.04.1","4.15.0-1162.177~14.04.1","4.15.0-1163.178~14.04.1","4.15.0-1164.179~14.04.1","4.15.0-1165.180~14.04.1","4.15.0-1166.181~14.04.1","4.15.0-1167.182~14.04.1","4.15.0-1168.183~14.04.1","4.15.0-1169.184~14.04.1","4.15.0-1170.185~14.04.1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"4.15.0-1171.186~14.04.1","binary_name":"linux-azure-cloud-tools-4.15.0-1171"},{"binary_version":"4.15.0-1171.186~14.04.1","binary_name":"linux-azure-headers-4.15.0-1171"},{"binary_version":"4.15.0-1171.186~14.04.1","binary_name":"linux-azure-tools-4.15.0-1171"},{"binary_version":"4.15.0-1171.186~14.04.1","binary_name":"linux-buildinfo-4.15.0-1171-azure"},{"binary_version":"4.15.0-1171.186~14.04.1","binary_name":"linux-cloud-tools-4.15.0-1171-azure"},{"binary_version":"4.15.0-1171.186~14.04.1","binary_name":"linux-headers-4.15.0-1171-azure"},{"binary_version":"4.15.0-1171.186~14.04.1","binary_name":"linux-image-unsigned-4.15.0-1171-azure"},{"binary_version":"4.15.0-1171.186~14.04.1","binary_name":"linux-modules-4.15.0-1171-azure"},{"binary_version":"4.15.0-1171.186~14.04.1","binary_name":"linux-modules-extra-4.15.0-1171-azure"},{"binary_version":"4.15.0-1171.186~14.04.1","binary_name":"linux-tools-4.15.0-1171-azure"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6440-2.json","cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-0597"},{"severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-1206"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-3772"},{"severity":[{"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:H/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2023-4622"},{"severity":[{"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":"high","type":"Ubuntu"}],"id":"CVE-2023-4623"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2023-4881"},{"severity":[{"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":"high","type":"Ubuntu"}],"id":"CVE-2023-4921"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2023-31083"},{"severity":[{"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":"medium","type":"Ubuntu"}],"id":"CVE-2023-34319"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2023-42752"},{"severity":[{"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:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2023-42753"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2023-42755"}]}}}],"schema_version":"1.7.3"}