High
Security advisory
The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block Device (NBD) Server support, allows remote attackers to cause a denial of service (segmentation fault and server crash) by leveraging failure to ensure that all initialization occurs before talking to a client in the nbd_negotiate function.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-9524
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:48 UTC · Revision 1
Source evidence
The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block Device (NBD) Server support, allows remote attackers to cause a denial of service (segmentation fault and server crash) by leveraging failure to ensure that all initialization occurs before talking to a client in the nbd_negotiate function.
osv:CVE-2017-9524
Complete source record
{
"id": "dad4168cea18a84aef551b1d8ce9cac9cbca2a6345966f15e1b44324b6008ac6",
"url": "https://osv.dev/vulnerability/CVE-2017-9524",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-9524",
"summary": "The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block Device (NBD) Server support, allows remote attackers to cause a denial of service (segmentation fault and server crash) by leveraging failure to ensure that all initialization occurs before talking to a client in the nbd_negotiate function.",
"evidence": "osv:CVE-2017-9524",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2017-9524",
"aliases": [
"CVE-2017-9524"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/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": "4cd42653f5c1df326a2678a84f24a78fb9601277"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.9.1"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
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"v1.0",
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"v1.0-rc3",
"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",
"v0.4.4",
"v0.4.3",
"v0.4.2",
"v0.4.1",
"v0.4.0",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-9524.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.com/qemu-project/qemu",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "4cd42653f5c1df326a2678a84f24a78fb9601277"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.9.1"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v2.9.1",
"v2.9.0",
"v2.9.0-rc5",
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"v2.8.0-rc2",
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"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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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-9524.json"
}
}
],
"modified": "2026-10-24T10:30:22.299781755Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2017:1681",
"https://access.redhat.com/errata/RHSA-2017:1682",
"https://access.redhat.com/errata/RHSA-2017:2408",
"https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg06240.html",
"https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg02321.html"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-9524",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 430647,
"published_at": "2017-07-06T16:29:00.467+00:00"
}