usn-4303-1
Vulnerability from osv_ubuntu
Published
2020-03-17 01:48
Modified
2026-06-03 10:45
Summary
linux, linux-aws, linux-kvm vulnerability
Details
Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested (level 2) guest access the resources of a parent (level 1) guest in certain situations. An attacker could use this to expose sensitive information.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2020-2732",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:16.04:LTS"
}
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],
"aliases": [],
"details": "Paulo Bonzini discovered that the KVM hypervisor implementation in the\nLinux kernel could improperly let a nested (level 2) guest access the\nresources of a parent (level 1) guest in certain situations. An attacker\ncould use this to expose sensitive information.\n",
"id": "USN-4303-1",
"modified": "2026-06-03T10:45:20Z",
"published": "2020-03-17T01:48:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4303-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-2732"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "linux, linux-aws, linux-kvm vulnerability",
"upstream": [
"UBUNTU-CVE-2020-2732"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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