USN-8617-1
- Source
- https://ubuntu.com/security/notices/USN-8617-1
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8617-1.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/USN-8617-1
- Upstream
- Related
- Published
- 2026-07-28T06:46:54Z
- Modified
- 2026-07-29T03:58:41.469270816Z
- Summary
- linux-kvm vulnerabilities
- Details
-
It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43503)
Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - InfiniBand drivers; - STMicroelectronics network drivers; - SCSI subsystem; - USB over IP driver; - SMB network file system; - Tracing infrastructure; - B.A.T.M.A.N. meshing protocol; - Ethernet bridge; - Ceph Core library; - IPv4 networking; - IPv6 networking; - Netfilter; - RxRPC session sockets; - X.25 network layer; (CVE-2026-23272, CVE-2026-23455, CVE-2026-31418, CVE-2026-31607, CVE-2026-31637, CVE-2026-31649, CVE-2026-31659, CVE-2026-31682, CVE-2026-31685, CVE-2026-43011, CVE-2026-43038, CVE-2026-43117, CVE-2026-43383, CVE-2026-43407, CVE-2026-43414, CVE-2026-46043, CVE-2026-46243)
- References
-
- https://ubuntu.com/security/notices/USN-8617-1
- https://ubuntu.com/security/CVE-2026-23272
- https://ubuntu.com/security/CVE-2026-23455
- https://ubuntu.com/security/CVE-2026-31418
- https://ubuntu.com/security/CVE-2026-31607
- https://ubuntu.com/security/CVE-2026-31637
- https://ubuntu.com/security/CVE-2026-31649
- https://ubuntu.com/security/CVE-2026-31659
- https://ubuntu.com/security/CVE-2026-31682
- https://ubuntu.com/security/CVE-2026-31685
- https://ubuntu.com/security/CVE-2026-43011
- https://ubuntu.com/security/CVE-2026-43038
- https://ubuntu.com/security/CVE-2026-43117
- https://ubuntu.com/security/CVE-2026-43383
- https://ubuntu.com/security/CVE-2026-43407
- https://ubuntu.com/security/CVE-2026-43414
- https://ubuntu.com/security/CVE-2026-43503
- https://ubuntu.com/security/CVE-2026-46043
- https://ubuntu.com/security/CVE-2026-46243
Affected packages
Ubuntu:Pro:20.04:LTS / linux-kvm
Package
- Name
- linux-kvm
- Purl
- pkg:deb/ubuntu/linux-kvm?arch=source&distro=esm-infra%2Ffocal
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.4.0-1148.157
Affected versions
5.*
5.3.0-1003.3
5.3.0-1008.9
5.3.0-1009.10
5.4.0-1004.4
5.4.0-1006.6
5.4.0-1007.7
5.4.0-1008.8
5.4.0-1009.9
5.4.0-1011.11
5.4.0-1015.15
5.4.0-1018.18
5.4.0-1020.20
5.4.0-1021.21
5.4.0-1023.23
5.4.0-1024.24
5.4.0-1026.27
5.4.0-1028.29
5.4.0-1030.31
5.4.0-1031.32
5.4.0-1032.33
5.4.0-1033.34
5.4.0-1034.35
5.4.0-1036.37
5.4.0-1037.38
5.4.0-1038.39
5.4.0-1039.40
5.4.0-1040.41
5.4.0-1041.42
5.4.0-1044.46
5.4.0-1045.47
5.4.0-1046.48
5.4.0-1047.49
5.4.0-1048.50
5.4.0-1049.51
5.4.0-1050.52
5.4.0-1051.53
5.4.0-1053.55
5.4.0-1054.56
5.4.0-1055.57
5.4.0-1056.58
5.4.0-1058.61
5.4.0-1059.62
5.4.0-1061.64
5.4.0-1062.65
5.4.0-1063.66
5.4.0-1065.68
5.4.0-1068.72
5.4.0-1070.75
5.4.0-1071.76
5.4.0-1073.78
5.4.0-1074.79
5.4.0-1075.80
5.4.0-1076.81
5.4.0-1078.84
5.4.0-1079.85
5.4.0-1082.88
5.4.0-1083.89
5.4.0-1084.90
5.4.0-1086.92
5.4.0-1087.93
5.4.0-1088.94
5.4.0-1089.95
5.4.0-1090.96
5.4.0-1091.97
5.4.0-1092.98
5.4.0-1093.99
5.4.0-1094.100
5.4.0-1095.101
5.4.0-1096.102
5.4.0-1097.103
5.4.0-1098.104
5.4.0-1099.105
5.4.0-1100.106
5.4.0-1101.107
5.4.0-1102.108
5.4.0-1103.110
5.4.0-1104.111
5.4.0-1105.112
5.4.0-1106.113
5.4.0-1107.114
5.4.0-1108.115
5.4.0-1109.116
5.4.0-1110.117
5.4.0-1111.118
5.4.0-1112.119
5.4.0-1113.120
5.4.0-1114.121
5.4.0-1115.122
5.4.0-1116.123
5.4.0-1117.124
5.4.0-1118.125
5.4.0-1119.127
5.4.0-1120.128
5.4.0-1121.129
5.4.0-1122.130
5.4.0-1123.131
5.4.0-1124.132
5.4.0-1125.133
5.4.0-1126.134
5.4.0-1127.136
5.4.0-1129.138
5.4.0-1130.139
5.4.0-1131.140
5.4.0-1132.141
5.4.0-1133.142
5.4.0-1134.143
5.4.0-1135.144
5.4.0-1136.145
5.4.0-1137.146
5.4.0-1138.147
5.4.0-1139.148
5.4.0-1140.149
5.4.0-1141.150
5.4.0-1143.152
5.4.0-1144.153
5.4.0-1145.154
5.4.0-1146.155
5.4.0-1147.156
Ecosystem specific
{
"binaries": [
{
"binary_name": "linux-buildinfo-5.4.0-1148-kvm",
"binary_version": "5.4.0-1148.157"
},
{
"binary_name": "linux-headers-5.4.0-1148-kvm",
"binary_version": "5.4.0-1148.157"
},
{
"binary_name": "linux-image-unsigned-5.4.0-1148-kvm",
"binary_version": "5.4.0-1148.157"
},
{
"binary_name": "linux-kvm-headers-5.4.0-1148",
"binary_version": "5.4.0-1148.157"
},
{
"binary_name": "linux-kvm-tools-5.4.0-1148",
"binary_version": "5.4.0-1148.157"
},
{
"binary_name": "linux-modules-5.4.0-1148-kvm",
"binary_version": "5.4.0-1148.157"
},
{
"binary_name": "linux-tools-5.4.0-1148-kvm",
"binary_version": "5.4.0-1148.157"
}
],
"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-8617-1.json"
cves_map
{
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"cves": [
{
"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-2026-23272"
},
{
"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-2026-23455"
},
{
"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-2026-31418"
},
{
"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"
},
{
"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"
}
]
},
{
"severity": [
{
"type": "CVSS_V4",
"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_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-2026-31637"
},
{
"id": "CVE-2026-31649",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/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": "medium"
}
]
},
{
"id": "CVE-2026-31659",
"severity": [
{
"type": "CVSS_V4",
"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_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-2026-31682",
"severity": [
{
"type": "CVSS_V4",
"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_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"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": [
{
"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"
}
]
},
{
"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: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": "Ubuntu",
"score": "critical"
}
],
"id": "CVE-2026-43038"
},
{
"id": "CVE-2026-43117",
"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:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"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"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H"
},
{
"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"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"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-2026-43414"
},
{
"id": "CVE-2026-43503",
"severity": [
{
"type": "CVSS_V4",
"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_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"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"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:N/A:H"
},
{
"type": "Ubuntu",
"score": "critical"
}
],
"id": "CVE-2026-46043"
},
{
"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"
}
],
"id": "CVE-2026-46243"
}
]
}