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{
"schema_version": "1.7.0",
"id": "USN-5073-2",
"summary": "linux-gcp, linux-gcp-4.15 vulnerabilities",
"details": "Maxim Levitsky and Paolo Bonzini discovered that the KVM hypervisor\nimplementation for AMD processors in the Linux kernel allowed a guest VM to\ndisable restrictions on VMLOAD/VMSAVE in a nested guest. An attacker in a\nguest VM could use this to read or write portions of the host's physical\nmemory. (CVE-2021-3656)\n\nMaxim Levitsky discovered that the KVM hypervisor implementation for AMD\nprocessors in the Linux kernel did not properly prevent a guest VM from\nenabling AVIC in nested guest VMs. An attacker in a guest VM could use this\nto write to portions of the host's physical memory. (CVE-2021-3653)\n\nNorbert Slusarek discovered that the CAN broadcast manger (bcm) protocol\nimplementation in the Linux kernel did not properly initialize memory in\nsome situations. A local attacker could use this to expose sensitive\ninformation (kernel memory). (CVE-2021-34693)\n\nMurray McAllister discovered that the joystick device interface in the\nLinux kernel did not properly validate data passed via an ioctl(). A local\nattacker could use this to cause a denial of service (system crash) or\npossibly execute arbitrary code on systems with a joystick device\nregistered. (CVE-2021-3612)\n\nIt was discovered that the Virtio console implementation in the Linux\nkernel did not properly validate input lengths in some situations. A local\nattacker could possibly use this to cause a denial of service (system\ncrash). (CVE-2021-38160)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2021-3612",
"UBUNTU-CVE-2021-3653",
"UBUNTU-CVE-2021-3656",
"UBUNTU-CVE-2021-34693",
"UBUNTU-CVE-2021-38160"
],
"related": [],
"published": "2021-09-17T06:27:26Z",
"modified": "2026-06-25T10:46:01Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "linux-gcp",
"purl": "pkg:deb/ubuntu/linux-gcp@4.15.0-1108.122~16.04.1?arch=source&distro=esm-infra/xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.15.0-1108.122~16.04.1"
}
]
}
],
"versions": [
"4.10.0-1004.4",
"4.10.0-1006.6",
"4.10.0-1007.7",
"4.10.0-1008.8",
"4.10.0-1009.9",
"4.13.0-1002.5",
"4.13.0-1006.9",
"4.13.0-1007.10",
"4.13.0-1008.11",
"4.13.0-1011.15",
"4.13.0-1012.16",
"4.13.0-1013.17",
"4.13.0-1015.19",
"4.13.0-1017.21",
"4.13.0-1019.23",
"4.15.0-1014.14~16.04.1",
"4.15.0-1015.15~16.04.1",
"4.15.0-1017.18~16.04.1",
"4.15.0-1018.19~16.04.2",
"4.15.0-1019.20~16.04.1",
"4.15.0-1021.22~16.04.1",
"4.15.0-1023.24~16.04.1",
"4.15.0-1024.25~16.04.2",
"4.15.0-1025.26~16.04.1",
"4.15.0-1026.27~16.04.1",
"4.15.0-1027.28~16.04.1",
"4.15.0-1028.29~16.04.1",
"4.15.0-1029.31~16.04.1",
"4.15.0-1030.32~16.04.1",
"4.15.0-1032.34~16.04.1",
"4.15.0-1033.35~16.04.1",
"4.15.0-1034.36~16.04.1",
"4.15.0-1036.38~16.04.1",
"4.15.0-1037.39~16.04.1",
"4.15.0-1040.42~16.04.1",
"4.15.0-1041.43",
"4.15.0-1042.44",
"4.15.0-1044.46",
"4.15.0-1046.49",
"4.15.0-1047.50",
"4.15.0-1049.52",
"4.15.0-1050.53",
"4.15.0-1052.56",
"4.15.0-1055.59",
"4.15.0-1058.62",
"4.15.0-1060.64",
"4.15.0-1061.65",
"4.15.0-1071.81~16.04.1",
"4.15.0-1077.87~16.04.1",
"4.15.0-1078.88~16.04.1",
"4.15.0-1080.90~16.04.1",
"4.15.0-1081.92~16.04.1",
"4.15.0-1083.94~16.04.1",
"4.15.0-1084.95~16.04.1",
"4.15.0-1086.98~16.04.1",
"4.15.0-1087.100~16.04.1",
"4.15.0-1088.101~16.04.1",
"4.15.0-1090.103~16.04.1",
"4.15.0-1091.104~16.04.1",
"4.15.0-1092.105~16.04.1",
"4.15.0-1093.106~16.04.1",
"4.15.0-1094.107~16.04.1",
"4.15.0-1095.108~16.04.1",
"4.15.0-1096.109~16.04.1",
"4.15.0-1097.110~16.04.1",
"4.15.0-1098.111~16.04.1",
"4.15.0-1099.112~16.04.1",
"4.15.0-1100.113~16.04.1",
"4.15.0-1103.116~16.04.1",
"4.15.0-1106.120~16.04.1",
"4.15.0-1107.121~16.04.1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "linux-buildinfo-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122~16.04.1"
},
{
"binary_name": "linux-gcp-headers-4.15.0-1108",
"binary_version": "4.15.0-1108.122~16.04.1"
},
{
"binary_name": "linux-gcp-tools-4.15.0-1108",
"binary_version": "4.15.0-1108.122~16.04.1"
},
{
"binary_name": "linux-headers-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122~16.04.1"
},
{
"binary_name": "linux-image-unsigned-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122~16.04.1"
},
{
"binary_name": "linux-modules-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122~16.04.1"
},
{
"binary_name": "linux-modules-extra-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122~16.04.1"
},
{
"binary_name": "linux-tools-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122~16.04.1"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"cves": [
{
"id": "CVE-2021-3612",
"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-2021-3653",
"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": "high"
}
]
},
{
"id": "CVE-2021-3656",
"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": "high"
}
]
},
{
"id": "CVE-2021-34693",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-38160",
"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"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "linux-gcp-4.15",
"purl": "pkg:deb/ubuntu/linux-gcp-4.15@4.15.0-1108.122?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.15.0-1108.122"
}
]
}
],
"versions": [
"4.15.0-1071.81",
"4.15.0-1077.87",
"4.15.0-1078.88",
"4.15.0-1080.90",
"4.15.0-1081.92",
"4.15.0-1083.94",
"4.15.0-1084.95",
"4.15.0-1086.98",
"4.15.0-1087.100",
"4.15.0-1088.101",
"4.15.0-1090.103",
"4.15.0-1091.104",
"4.15.0-1092.105",
"4.15.0-1093.106",
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"4.15.0-1095.108",
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"4.15.0-1100.113",
"4.15.0-1103.116",
"4.15.0-1106.120",
"4.15.0-1107.121"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "linux-buildinfo-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122"
},
{
"binary_name": "linux-gcp-4.15-headers-4.15.0-1108",
"binary_version": "4.15.0-1108.122"
},
{
"binary_name": "linux-gcp-4.15-tools-4.15.0-1108",
"binary_version": "4.15.0-1108.122"
},
{
"binary_name": "linux-headers-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122"
},
{
"binary_name": "linux-image-unsigned-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122"
},
{
"binary_name": "linux-modules-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122"
},
{
"binary_name": "linux-modules-extra-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122"
},
{
"binary_name": "linux-tools-4.15.0-1108-gcp",
"binary_version": "4.15.0-1108.122"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": [
{
"id": "CVE-2021-3612",
"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-2021-3653",
"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": "high"
}
]
},
{
"id": "CVE-2021-3656",
"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": "high"
}
]
},
{
"id": "CVE-2021-34693",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-38160",
"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"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5073-2"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3612"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3653"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3656"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-34693"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-38160"
}
]
}