CVE-2026-63622
Full vulnerability record from the local CVENow database.
Description
A flaw was found in libvirt. A local attacker, specifically a process running as the confined `swtpm` user, could exploit a symlink-following vulnerability in the `virFileChownFiles()` function. By planting a symbolic link within the `swtpm` state directory, the attacker could trick the root-level libvirt daemon into changing the ownership of an arbitrary file to the `swtpm` user. This allows for privilege escalation from the `swtpm` sandbox to root-level file ownership control.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-08-10 21:17:23.550000
Last modified
2026-11-04 23:17:57.107000
View original CVE JSON
{
"id": "CVE-2026-63622",
"sourceIdentifier": "[email protected]",
"published": "2026-08-10T21:17:23.550",
"lastModified": "2026-11-04T23:17:57.107",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in libvirt. A local attacker, specifically a process running as the confined `swtpm` user, could exploit a symlink-following vulnerability in the `virFileChownFiles()` function. By planting a symbolic link within the `swtpm` state directory, the attacker could trick the root-level libvirt daemon into changing the ownership of an arbitrary file to the `swtpm` user. This allows for privilege escalation from the `swtpm` sandbox to root-level file ownership control."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
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"product": "Red Hat Enterprise Linux 10",
"defaultStatus": "affected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "libvirt",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10.2"
],
"versions": [
{
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"lessThan": "*",
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"status": "unaffected"
}
]
},
{
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"cpes": [
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],
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}
]
},
{
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],
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{
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}
]
},
{
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}
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{
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}
]
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{
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{
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{
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},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
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"cpes": [
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{
"version": "8080020260910092120.63b34585",
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},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
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},
{
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"packageName": "libvirt",
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"cpe:/a:redhat:enterprise_linux:9::crb"
],
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{
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"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
"defaultStatus": "affected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "libvirt",
"cpes": [
"cpe:/a:redhat:rhel_e4s:9.2::appstream"
],
"versions": [
{
"version": "0:9.0.0-10.16.el9_2",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
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],
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{
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"packageName": "libvirt",
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"cpe:/a:redhat:rhel_eus:9.6::appstream",
"cpe:/a:redhat:rhel_eus:9.6::crb"
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"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 6",
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"packageName": "libvirt",
"cpes": [
"cpe:/o:redhat:rhel_els:6"
]
},
{
"vendor": "Red Hat",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "virt:rhel/libvirt",
"cpes": [
"cpe:/a:redhat:enterprise_linux:8"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux for NVIDIA 26",
"defaultStatus": "unknown",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "libvirt",
"cpes": [
"cpe:/a:redhat:enterprise_linux_nvidia:"
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-08-11T17:13:19.056016Z",
"id": "CVE-2026-63622",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-59"
}
]
}
],
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2026:64773",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:65515",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:65516",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:65803",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:68513",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:68594",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:69114",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:69131",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:74424",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:75583",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-63622",
"source": "[email protected]"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513065",
"source": "[email protected]"
}
]
}