Files
vuln-ubuntu/data/osv/usn/USN-5091-3.json
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{
"schema_version": "1.7.0",
"id": "USN-5091-3",
"summary": "linux-azure, linux-azure-5.4 regression",
"details": "USN-5091-1 fixed vulnerabilities in Linux 5.4-based kernels.\nUnfortunately, for Linux kernels intended for use within Microsoft\nAzure environments, that update introduced a regression that could\ncause the kernel to fail to boot in large Azure instance types.\nThis update fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk\n discovered that the BPF verifier in the Linux kernel missed possible\n mispredicted branches due to type confusion, allowing a side-channel\n attack. An attacker could use this to expose sensitive information.\n (CVE-2021-33624)\n\n It was discovered that the tracing subsystem in the Linux kernel did not\n properly keep track of per-cpu ring buffer state. A privileged attacker\n could use this to cause a denial of service. (CVE-2021-3679)\n\n Alexey Kardashevskiy discovered that the KVM implementation for PowerPC\n systems in the Linux kernel did not properly validate RTAS arguments in\n some situations. An attacker in a guest vm could use this to cause a denial\n of service (host OS crash) or possibly execute arbitrary code.\n (CVE-2021-37576)\n\n It was discovered that the Virtio console implementation in the Linux\n kernel did not properly validate input lengths in some situations. A local\n attacker could possibly use this to cause a denial of service (system\n crash). (CVE-2021-38160)\n\n Michael Wakabayashi discovered that the NFSv4 client implementation in the\n Linux kernel did not properly order connection setup operations. An\n attacker controlling a remote NFS server could use this to cause a denial\n of service on the client. (CVE-2021-38199)\n\n It was discovered that the MAX-3421 host USB device driver in the Linux\n kernel did not properly handle device removal events. A physically\n proximate attacker could use this to cause a denial of service (system\n crash). (CVE-2021-38204)\n",
"aliases": [],
"upstream": [],
"related": [],
"published": "2021-10-15T00:11:45Z",
"modified": "2026-02-10T04:42:19Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "linux-azure-5.4",
"purl": "pkg:deb/ubuntu/linux-azure-5.4@5.4.0-1061.64~18.04.1?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.4.0-1061.64~18.04.1"
}
]
}
],
"versions": [
"5.4.0-1020.20~18.04.1",
"5.4.0-1022.22~18.04.1",
"5.4.0-1023.23~18.04.1",
"5.4.0-1025.25~18.04.1",
"5.4.0-1026.26~18.04.1",
"5.4.0-1031.32~18.04.1",
"5.4.0-1032.33~18.04.1",
"5.4.0-1034.35~18.04.1",
"5.4.0-1035.36~18.04.1",
"5.4.0-1036.38~18.04.1",
"5.4.0-1039.41~18.04.1",
"5.4.0-1040.42~18.04.1",
"5.4.0-1041.43~18.04.1",
"5.4.0-1043.45~18.04.1",
"5.4.0-1044.46~18.04.1",
"5.4.0-1046.48~18.04.1",
"5.4.0-1047.49~18.04.1",
"5.4.0-1048.50~18.04.1",
"5.4.0-1049.51~18.04.1",
"5.4.0-1051.53~18.04.1",
"5.4.0-1055.57~18.04.1",
"5.4.0-1056.58~18.04.1",
"5.4.0-1058.60~18.04.1",
"5.4.0-1059.62~18.04.1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "linux-azure-5.4-cloud-tools-5.4.0-1061",
"binary_version": "5.4.0-1061.64~18.04.1"
},
{
"binary_name": "linux-azure-5.4-headers-5.4.0-1061",
"binary_version": "5.4.0-1061.64~18.04.1"
},
{
"binary_name": "linux-azure-5.4-tools-5.4.0-1061",
"binary_version": "5.4.0-1061.64~18.04.1"
},
{
"binary_name": "linux-buildinfo-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64~18.04.1"
},
{
"binary_name": "linux-cloud-tools-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64~18.04.1"
},
{
"binary_name": "linux-headers-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64~18.04.1"
},
{
"binary_name": "linux-image-unsigned-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64~18.04.1"
},
{
"binary_name": "linux-modules-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64~18.04.1"
},
{
"binary_name": "linux-modules-extra-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64~18.04.1"
},
{
"binary_name": "linux-tools-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64~18.04.1"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": []
}
}
},
{
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "linux-azure",
"purl": "pkg:deb/ubuntu/linux-azure@5.4.0-1061.64?arch=source&distro=focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.4.0-1061.64"
}
]
}
],
"versions": [
"5.3.0-1003.3",
"5.3.0-1008.9",
"5.3.0-1009.10",
"5.4.0-1006.6",
"5.4.0-1008.8",
"5.4.0-1009.9",
"5.4.0-1010.10",
"5.4.0-1012.12",
"5.4.0-1016.16",
"5.4.0-1019.19",
"5.4.0-1020.20",
"5.4.0-1022.22",
"5.4.0-1023.23",
"5.4.0-1025.25",
"5.4.0-1026.26",
"5.4.0-1031.32",
"5.4.0-1032.33",
"5.4.0-1034.35",
"5.4.0-1035.36",
"5.4.0-1036.38",
"5.4.0-1039.41",
"5.4.0-1040.42",
"5.4.0-1041.43",
"5.4.0-1043.45",
"5.4.0-1044.46",
"5.4.0-1046.48",
"5.4.0-1047.49",
"5.4.0-1048.50",
"5.4.0-1049.51",
"5.4.0-1051.53",
"5.4.0-1055.57",
"5.4.0-1056.58",
"5.4.0-1058.60",
"5.4.0-1059.62"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "linux-azure-cloud-tools-5.4.0-1061",
"binary_version": "5.4.0-1061.64"
},
{
"binary_name": "linux-azure-headers-5.4.0-1061",
"binary_version": "5.4.0-1061.64"
},
{
"binary_name": "linux-azure-tools-5.4.0-1061",
"binary_version": "5.4.0-1061.64"
},
{
"binary_name": "linux-buildinfo-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64"
},
{
"binary_name": "linux-cloud-tools-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64"
},
{
"binary_name": "linux-headers-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64"
},
{
"binary_name": "linux-image-unsigned-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64"
},
{
"binary_name": "linux-modules-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64"
},
{
"binary_name": "linux-modules-extra-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64"
},
{
"binary_name": "linux-tools-5.4.0-1061-azure",
"binary_version": "5.4.0-1061.64"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:20.04:LTS",
"cves": []
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5091-3"
},
{
"type": "REPORT",
"url": "https://launchpad.net/bugs/1940564"
}
]
}