USN-8361-3
- Source
- https://ubuntu.com/security/notices/USN-8361-3
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8361-3.json
- JSON Data
- https://api.osv.dev/v1/vulns/USN-8361-3
- Upstream
- Related
- Published
- 2026-06-17T09:53:16Z
- Modified
- 2026-06-25T13:32:32.523843632Z
- Summary
- linux, linux-aws, linux-kvm vulnerability
- Details
-
A security issue was discovered in the Linux kernel. An attacker could possibly use this to compromise the system. This update corrects flaws in the following subsystem: - Packet sockets; (CVE-2026-31504)
- References
Affected packages
Ubuntu:Pro:16.04:LTS / linux
Package
- Name
- linux
- Purl
- pkg:deb/ubuntu/linux?arch=source&distro=esm-infra%2Fxenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed4.4.0-281.315
Affected versions
4.*
4.2.0-16.19
4.2.0-17.21
4.2.0-19.23
4.3.0-1.10
4.3.0-2.11
4.3.0-5.16
4.3.0-6.17
4.3.0-7.18
4.4.0-2.16
4.4.0-4.19
4.4.0-6.21
4.4.0-7.22
4.4.0-8.23
4.4.0-9.24
4.4.0-10.25
4.4.0-11.26
4.4.0-12.28
4.4.0-13.29
4.4.0-14.30
4.4.0-15.31
4.4.0-16.32
4.4.0-17.33
4.4.0-18.34
4.4.0-21.37
4.4.0-22.39
4.4.0-22.40
4.4.0-24.43
4.4.0-28.47
4.4.0-31.50
4.4.0-34.53
4.4.0-36.55
4.4.0-38.57
4.4.0-42.62
4.4.0-43.63
4.4.0-45.66
4.4.0-47.68
4.4.0-51.72
4.4.0-53.74
4.4.0-57.78
4.4.0-59.80
4.4.0-62.83
4.4.0-63.84
4.4.0-64.85
4.4.0-65.86
4.4.0-66.87
4.4.0-67.88
4.4.0-70.91
4.4.0-71.92
4.4.0-72.93
4.4.0-75.96
4.4.0-77.98
4.4.0-78.99
4.4.0-79.100
4.4.0-81.104
4.4.0-83.106
4.4.0-87.110
4.4.0-89.112
4.4.0-91.114
4.4.0-92.115
4.4.0-93.116
4.4.0-96.119
4.4.0-97.120
4.4.0-98.121
4.4.0-101.124
4.4.0-103.126
4.4.0-104.127
4.4.0-108.131
4.4.0-109.132
4.4.0-112.135
4.4.0-116.140
4.4.0-119.143
4.4.0-121.145
4.4.0-122.146
4.4.0-124.148
4.4.0-127.153
4.4.0-128.154
4.4.0-130.156
4.4.0-131.157
4.4.0-133.159
4.4.0-134.160
4.4.0-135.161
4.4.0-137.163
4.4.0-138.164
4.4.0-139.165
4.4.0-140.166
4.4.0-141.167
4.4.0-142.168
4.4.0-143.169
4.4.0-145.171
4.4.0-146.172
4.4.0-148.174
4.4.0-150.176
4.4.0-151.178
4.4.0-154.181
4.4.0-157.185
4.4.0-159.187
4.4.0-161.189
4.4.0-164.192
4.4.0-165.193
4.4.0-166.195
4.4.0-168.197
4.4.0-169.198
4.4.0-170.199
4.4.0-171.200
4.4.0-173.203
4.4.0-174.204
4.4.0-176.206
4.4.0-177.207
4.4.0-178.208
4.4.0-179.209
4.4.0-184.214
4.4.0-185.215
4.4.0-186.216
4.4.0-187.217
4.4.0-189.219
4.4.0-190.220
4.4.0-193.224
4.4.0-194.226
4.4.0-197.229
4.4.0-198.230
4.4.0-200.232
4.4.0-201.233
4.4.0-203.235
4.4.0-204.236
4.4.0-206.238
4.4.0-208.240
4.4.0-209.241
4.4.0-210.242
4.4.0-211.243
4.4.0-212.244
4.4.0-213.245
4.4.0-214.246
4.4.0-216.249
4.4.0-217.250
4.4.0-218.251
4.4.0-219.252
4.4.0-221.254
4.4.0-222.255
4.4.0-223.256
4.4.0-224.257
4.4.0-227.261
4.4.0-229.263
4.4.0-230.264
4.4.0-231.265
4.4.0-233.267
4.4.0-234.268
4.4.0-235.269
4.4.0-236.270
4.4.0-237.271
4.4.0-239.273
4.4.0-240.274
4.4.0-241.275
4.4.0-242.276
4.4.0-243.277
4.4.0-244.278
4.4.0-245.279
4.4.0-246.280
4.4.0-248.282
4.4.0-250.284
4.4.0-251.285
4.4.0-252.286
4.4.0-253.287
4.4.0-254.288
4.4.0-256.290
4.4.0-257.291
4.4.0-258.292
4.4.0-259.293
4.4.0-260.294
4.4.0-261.295
4.4.0-262.296
4.4.0-263.297
4.4.0-264.298
4.4.0-266.300
4.4.0-267.301
4.4.0-268.302
4.4.0-269.303
4.4.0-270.304
4.4.0-271.305
4.4.0-272.306
4.4.0-273.307
4.4.0-274.308
4.4.0-276.310
4.4.0-277.311
4.4.0-278.312
4.4.0-279.313
4.4.0-280.314
Ecosystem specific
{
"binaries": [
{
"binary_name": "linux-buildinfo-4.4.0-281-generic",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-buildinfo-4.4.0-281-lowlatency",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-cloud-tools-4.4.0-281",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-cloud-tools-4.4.0-281-generic",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-cloud-tools-4.4.0-281-lowlatency",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-cloud-tools-common",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-headers-4.4.0-281",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-headers-4.4.0-281-generic",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-headers-4.4.0-281-lowlatency",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-image-unsigned-4.4.0-281-generic",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-image-unsigned-4.4.0-281-lowlatency",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-modules-4.4.0-281-generic",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-modules-4.4.0-281-lowlatency",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-modules-extra-4.4.0-281-generic",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-source-4.4.0",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-tools-4.4.0-281",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-tools-4.4.0-281-generic",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-tools-4.4.0-281-lowlatency",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-tools-common",
"binary_version": "4.4.0-281.315"
},
{
"binary_name": "linux-tools-host",
"binary_version": "4.4.0-281.315"
}
],
"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-8361-3.json"
cves_map
{
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"cves": [
{
"id": "CVE-2026-31504",
"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": "medium",
"type": "Ubuntu"
}
]
}
]
}
Ubuntu:Pro:16.04:LTS / linux-aws
Package
- Name
- linux-aws
- Purl
- pkg:deb/ubuntu/linux-aws?arch=source&distro=esm-infra%2Fxenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed4.4.0-1193.208
Affected versions
4.*
4.4.0-1001.10
4.4.0-1003.12
4.4.0-1004.13
4.4.0-1007.16
4.4.0-1009.18
4.4.0-1011.20
4.4.0-1012.21
4.4.0-1013.22
4.4.0-1016.25
4.4.0-1017.26
4.4.0-1018.27
4.4.0-1020.29
4.4.0-1022.31
4.4.0-1026.35
4.4.0-1028.37
4.4.0-1030.39
4.4.0-1031.40
4.4.0-1032.41
4.4.0-1035.44
4.4.0-1037.46
4.4.0-1038.47
4.4.0-1039.48
4.4.0-1041.50
4.4.0-1043.52
4.4.0-1044.53
4.4.0-1047.56
4.4.0-1048.57
4.4.0-1049.58
4.4.0-1050.59
4.4.0-1052.61
4.4.0-1054.63
4.4.0-1055.64
4.4.0-1057.66
4.4.0-1060.69
4.4.0-1061.70
4.4.0-1062.71
4.4.0-1063.72
4.4.0-1065.75
4.4.0-1066.76
4.4.0-1067.77
4.4.0-1069.79
4.4.0-1070.80
4.4.0-1072.82
4.4.0-1073.83
4.4.0-1074.84
4.4.0-1075.85
4.4.0-1077.87
4.4.0-1079.89
4.4.0-1081.91
4.4.0-1083.93
4.4.0-1084.94
4.4.0-1085.96
4.4.0-1087.98
4.4.0-1088.99
4.4.0-1090.101
4.4.0-1092.103
4.4.0-1094.105
4.4.0-1095.106
4.4.0-1096.107
4.4.0-1098.109
4.4.0-1099.110
4.4.0-1100.111
4.4.0-1101.112
4.4.0-1102.113
4.4.0-1104.115
4.4.0-1105.116
4.4.0-1106.117
4.4.0-1107.118
4.4.0-1109.120
4.4.0-1110.121
4.4.0-1111.123
4.4.0-1112.124
4.4.0-1113.126
4.4.0-1114.127
4.4.0-1117.131
4.4.0-1118.132
4.4.0-1119.133
4.4.0-1121.135
4.4.0-1122.136
4.4.0-1123.137
4.4.0-1124.138
4.4.0-1126.140
4.4.0-1127.141
4.4.0-1128.142
4.4.0-1129.143
4.4.0-1130.144
4.4.0-1131.145
4.4.0-1132.146
4.4.0-1133.147
4.4.0-1134.148
4.4.0-1135.149
4.4.0-1137.151
4.4.0-1138.152
4.4.0-1139.153
4.4.0-1140.154
4.4.0-1143.158
4.4.0-1145.160
4.4.0-1146.161
4.4.0-1147.162
4.4.0-1148.163
4.4.0-1150.165
4.4.0-1151.166
4.4.0-1152.167
4.4.0-1153.168
4.4.0-1154.169
4.4.0-1155.170
4.4.0-1156.171
4.4.0-1157.172
4.4.0-1158.173
4.4.0-1159.174
4.4.0-1160.175
4.4.0-1161.176
4.4.0-1162.177
4.4.0-1163.178
4.4.0-1164.179
4.4.0-1165.180
4.4.0-1166.181
4.4.0-1167.182
4.4.0-1168.183
4.4.0-1169.184
4.4.0-1171.186
4.4.0-1172.187
4.4.0-1173.188
4.4.0-1174.189
4.4.0-1175.190
4.4.0-1176.191
4.4.0-1177.192
4.4.0-1178.193
4.4.0-1179.194
4.4.0-1180.195
4.4.0-1181.196
4.4.0-1182.197
4.4.0-1183.198
4.4.0-1184.199
4.4.0-1185.200
4.4.0-1186.201
4.4.0-1187.202
4.4.0-1188.203
4.4.0-1189.204
4.4.0-1190.205
4.4.0-1191.206
4.4.0-1192.207
Ecosystem specific
{
"binaries": [
{
"binary_name": "linux-aws-cloud-tools-4.4.0-1193",
"binary_version": "4.4.0-1193.208"
},
{
"binary_name": "linux-aws-headers-4.4.0-1193",
"binary_version": "4.4.0-1193.208"
},
{
"binary_name": "linux-aws-tools-4.4.0-1193",
"binary_version": "4.4.0-1193.208"
},
{
"binary_name": "linux-buildinfo-4.4.0-1193-aws",
"binary_version": "4.4.0-1193.208"
},
{
"binary_name": "linux-cloud-tools-4.4.0-1193-aws",
"binary_version": "4.4.0-1193.208"
},
{
"binary_name": "linux-headers-4.4.0-1193-aws",
"binary_version": "4.4.0-1193.208"
},
{
"binary_name": "linux-image-4.4.0-1193-aws",
"binary_version": "4.4.0-1193.208"
},
{
"binary_name": "linux-modules-4.4.0-1193-aws",
"binary_version": "4.4.0-1193.208"
},
{
"binary_name": "linux-modules-extra-4.4.0-1193-aws",
"binary_version": "4.4.0-1193.208"
},
{
"binary_name": "linux-tools-4.4.0-1193-aws",
"binary_version": "4.4.0-1193.208"
}
],
"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-8361-3.json"
cves_map
{
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"cves": [
{
"id": "CVE-2026-31504",
"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": "medium",
"type": "Ubuntu"
}
]
}
]
}
Ubuntu:Pro:16.04:LTS / linux-kvm
Package
- Name
- linux-kvm
- Purl
- pkg:deb/ubuntu/linux-kvm?arch=source&distro=esm-infra%2Fxenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed4.4.0-1156.167
Affected versions
4.*
4.4.0-1004.9
4.4.0-1007.12
4.4.0-1008.13
4.4.0-1009.14
4.4.0-1010.15
4.4.0-1012.17
4.4.0-1013.18
4.4.0-1015.20
4.4.0-1017.22
4.4.0-1019.24
4.4.0-1020.25
4.4.0-1021.26
4.4.0-1023.28
4.4.0-1026.31
4.4.0-1027.32
4.4.0-1029.34
4.4.0-1031.37
4.4.0-1032.38
4.4.0-1033.39
4.4.0-1035.41
4.4.0-1036.42
4.4.0-1037.43
4.4.0-1038.44
4.4.0-1039.45
4.4.0-1040.46
4.4.0-1041.47
4.4.0-1043.49
4.4.0-1044.50
4.4.0-1046.52
4.4.0-1047.53
4.4.0-1048.55
4.4.0-1051.58
4.4.0-1052.59
4.4.0-1054.61
4.4.0-1056.63
4.4.0-1058.65
4.4.0-1059.66
4.4.0-1060.67
4.4.0-1062.69
4.4.0-1063.70
4.4.0-1064.71
4.4.0-1065.72
4.4.0-1066.73
4.4.0-1068.75
4.4.0-1069.76
4.4.0-1070.77
4.4.0-1071.78
4.4.0-1075.82
4.4.0-1076.83
4.4.0-1077.84
4.4.0-1078.85
4.4.0-1079.86
4.4.0-1080.87
4.4.0-1082.91
4.4.0-1084.93
4.4.0-1085.94
4.4.0-1087.96
4.4.0-1088.97
4.4.0-1089.98
4.4.0-1090.99
4.4.0-1091.100
4.4.0-1092.101
4.4.0-1093.102
4.4.0-1094.103
4.4.0-1095.104
4.4.0-1096.105
4.4.0-1097.106
4.4.0-1098.107
4.4.0-1099.108
4.4.0-1100.109
4.4.0-1102.111
4.4.0-1103.112
4.4.0-1104.113
4.4.0-1105.114
4.4.0-1108.118
4.4.0-1110.120
4.4.0-1111.121
4.4.0-1112.122
4.4.0-1113.123
4.4.0-1114.124
4.4.0-1115.125
4.4.0-1116.126
4.4.0-1117.127
4.4.0-1118.128
4.4.0-1119.129
4.4.0-1120.130
4.4.0-1121.131
4.4.0-1122.132
4.4.0-1123.133
4.4.0-1124.134
4.4.0-1125.135
4.4.0-1126.136
4.4.0-1128.138
4.4.0-1129.139
4.4.0-1130.140
4.4.0-1131.141
4.4.0-1132.142
4.4.0-1134.144
4.4.0-1135.145
4.4.0-1136.146
4.4.0-1137.147
4.4.0-1138.148
4.4.0-1139.149
4.4.0-1140.151
4.4.0-1141.152
4.4.0-1142.153
4.4.0-1143.154
4.4.0-1144.155
4.4.0-1145.156
4.4.0-1146.157
4.4.0-1147.158
4.4.0-1148.159
4.4.0-1149.160
4.4.0-1150.161
4.4.0-1151.162
4.4.0-1152.163
4.4.0-1153.164
4.4.0-1154.165
4.4.0-1155.166
Ecosystem specific
{
"binaries": [
{
"binary_name": "linux-buildinfo-4.4.0-1156-kvm",
"binary_version": "4.4.0-1156.167"
},
{
"binary_name": "linux-cloud-tools-4.4.0-1156-kvm",
"binary_version": "4.4.0-1156.167"
},
{
"binary_name": "linux-headers-4.4.0-1156-kvm",
"binary_version": "4.4.0-1156.167"
},
{
"binary_name": "linux-image-4.4.0-1156-kvm",
"binary_version": "4.4.0-1156.167"
},
{
"binary_name": "linux-kvm-cloud-tools-4.4.0-1156",
"binary_version": "4.4.0-1156.167"
},
{
"binary_name": "linux-kvm-headers-4.4.0-1156",
"binary_version": "4.4.0-1156.167"
},
{
"binary_name": "linux-kvm-tools-4.4.0-1156",
"binary_version": "4.4.0-1156.167"
},
{
"binary_name": "linux-modules-4.4.0-1156-kvm",
"binary_version": "4.4.0-1156.167"
},
{
"binary_name": "linux-tools-4.4.0-1156-kvm",
"binary_version": "4.4.0-1156.167"
}
],
"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-8361-3.json"
cves_map
{
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"cves": [
{
"id": "CVE-2026-31504",
"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": "medium",
"type": "Ubuntu"
}
]
}
]
}