CVE-2016-4480
Published May 18, 2016
Last updated 8 years ago
Overview
- Description
- The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen 4.6.x and earlier does not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might allow local guest OS users to gain privileges via a crafted mapping of memory.
- Source
- cve@mitre.org
- NVD status
- Modified
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.0
- Type
- Primary
- Base score
- 8.4
- Impact score
- 5.9
- Exploitability score
- 2.5
- Vector string
- CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 7.2
- Impact score
- 10
- Exploitability score
- 3.9
- Vector string
- AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
- nvd@nist.gov
- CWE-264
Configurations
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{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5FEC7F7E-AA94-4405-93D6-D0194A37D3C9"
},
{
"criteria": "cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C2D62B2C-40E5-41B7-9DAA-029BCD079054"
},
{
"criteria": "cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4BA58099-26F7-4B01-B9FC-275F012FE9C6"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AF989165-3B7E-4743-8E97-6558BD164A8F",
"versionEndIncluding": "4.6.1"
}
],
"operator": "OR"
}
]
}
]