Medium
Security advisory
The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the descriptor buffer.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-6490
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:55 UTC · Revision 1
Source evidence
The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the descriptor buffer.
osv:CVE-2016-6490
Complete source record
{
"id": "f6ef0af9822242a3c815fb0dc2dc60ce7889ae49b57e69b73faa97bc81275c9c",
"url": "https://osv.dev/vulnerability/CVE-2016-6490",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-6490",
"summary": "The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the descriptor buffer.",
"evidence": "osv:CVE-2016-6490",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2016-6490",
"aliases": [
"CVE-2016-6490"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/qemu/qemu",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "529d45e151d82a772cd9b9af64bb25f88fba6567"
},
{
"introduced": "2d2e632ad00d11867c6c5625605b1fbc022dd62f"
},
{
"last_affected": "2d2e632ad00d11867c6c5625605b1fbc022dd62f"
}
],
"database_specific": {
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{
"cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.6.2"
}
],
"source": "CPE_RANGE"
},
{
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"range": [
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},
{
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"source": "CPE_STRING"
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}
}
],
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"v0.11.0-rc0",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-6490.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.com/qemu-project/qemu",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "529d45e151d82a772cd9b9af64bb25f88fba6567"
},
{
"introduced": "2d2e632ad00d11867c6c5625605b1fbc022dd62f"
},
{
"last_affected": "2d2e632ad00d11867c6c5625605b1fbc022dd62f"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.6.2"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:qemu:qemu:2.7.0:rc0:*:*:*:*:*:*",
"range": [
{
"introduced": "2.7.0-rc0"
},
{
"last_affected": "2.7.0-rc0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
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"v2.6.1",
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"v2.5.0",
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],
"database_specific": {
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}
}
],
"modified": "2026-10-24T10:30:46.579387957Z",
"provider": "osv",
"references": [
"https://security.gentoo.org/glsa/201609-01",
"https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg06246.html"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2016-6490",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 436366,
"published_at": "2016-12-10T00:59:01.76+00:00"
}