High
Security advisory
Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-9381
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:22 UTC · Revision 1
Source evidence
Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.
osv:CVE-2016-9381
Complete source record
{
"id": "6685bece878e21fe1df33a4e51ac40fab95615a9ab429a3d01d4a31ff192c27b",
"url": "https://osv.dev/vulnerability/CVE-2016-9381",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-9381",
"summary": "Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a \"double fetch\" vulnerability.",
"evidence": "osv:CVE-2016-9381",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-9381",
"aliases": [
"CVE-2016-9381"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/qemu/qemu",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "0d83fccb4fb3140d21feeb37ba069ba71029aaa7"
},
{
"introduced": "b0bcc86d2a87456f5a276f941dc775b265b309cf"
},
{
"last_affected": "b0bcc86d2a87456f5a276f941dc775b265b309cf"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.7.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:qemu:qemu:2.8.0:rc0:*:*:*:*:*:*",
"range": [
{
"introduced": "2.8.0-rc0"
},
{
"last_affected": "2.8.0-rc0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
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"v1.0-rc2",
"v1.0-rc1",
"v1.0-rc0",
"v0.14.0-rc0",
"v0.13.0-rc0",
"v0.12.0-rc0",
"v0.11.0-rc0",
"v0.5.0",
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"v0.4.2",
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"v0.4.0",
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"v0.1.6",
"v0.1.5",
"v0.1.4",
"v0.1.3",
"v0.1.1",
"v0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-9381.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.com/qemu-project/qemu",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "0d83fccb4fb3140d21feeb37ba069ba71029aaa7"
},
{
"introduced": "b0bcc86d2a87456f5a276f941dc775b265b309cf"
},
{
"last_affected": "b0bcc86d2a87456f5a276f941dc775b265b309cf"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.7.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:qemu:qemu:2.8.0:rc0:*:*:*:*:*:*",
"range": [
{
"introduced": "2.8.0-rc0"
},
{
"last_affected": "2.8.0-rc0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"2.8.0-rc0",
"v2.7.1",
"v2.8.0-rc0",
"v2.7.0",
"v2.7.0-rc5",
"v2.7.0-rc4",
"v2.7.0-rc3",
"v2.7.0-rc2",
"v2.6.0",
"v2.7.0-rc1",
"v2.7.0-rc0",
"v2.6.0-rc5",
"v2.6.0-rc4",
"v2.6.0-rc3",
"v2.6.0-rc2",
"v2.6.0-rc1",
"v2.6.0-rc0",
"v2.5.0",
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"v2.5.0-rc2",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-9381.json"
}
}
],
"modified": "2026-10-24T10:30:38.468651559Z",
"provider": "osv",
"references": [
"https://security.gentoo.org/glsa/201612-56",
"https://support.citrix.com/article/CTX218775"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:*",
"cpe:2.3:a:citrix:xenserver:6.2.0:*:*:*:*:*:*:*",
"cpe:2.3:a:citrix:xenserver:6.5:*:*:*:*:*:*:*",
"cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "citrix:xenserver",
"extracted_events": [
{
"range": [
{
"introduced": "6.0.2"
},
{
"last_affected": "6.0.2"
},
{
"introduced": "6.2.0"
},
{
"last_affected": "6.2.0"
},
{
"introduced": "6.5"
},
{
"last_affected": "6.5"
},
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-9381",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 434454,
"published_at": "2017-01-23T21:59:02.8+00:00"
}