CVE-2021-28039
Published Mar 5, 2021
Last updated 8 months ago
Overview
- Description
- An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.
- Source
- cve@mitre.org
- NVD status
- Modified
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.5
- Impact score
- 4
- Exploitability score
- 2
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 2.1
- Impact score
- 2.9
- Exploitability score
- 3.9
- Vector string
- AV:L/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
- nvd@nist.gov
- CWE-131
Configurations
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{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"matchCriteriaId": "3FA33EE3-601B-4EC1-AC17-F948E8486DE5",
"versionEndIncluding": "5.11.3",
"versionStartIncluding": "5.9.0"
},
{
"criteria": "cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BFA1950D-1D9F-4401-AA86-CF3028EFD286"
}
],
"operator": "AND"
}
]
},
{
"nodes": [
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},
{
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"matchCriteriaId": "FB9B8171-F6CA-427D-81E0-6536D3BBFA8D"
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