Unrated
Security advisory
A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2022-0897
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 20:38 UTC · Revision 1
Source evidence
A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).
osv:CVE-2022-0897
Complete source record
{
"id": "51ac57d88164183637e6f4e94d688469ac3b1f0788d0b2f725eb922f8dd49f19",
"url": "https://osv.dev/vulnerability/CVE-2022-0897",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2022-0897",
"summary": "A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).",
"evidence": "osv:CVE-2022-0897",
"products": [],
"severity": "unknown",
"structured": {
"id": "CVE-2022-0897",
"aliases": [
"CVE-2022-0897"
],
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{
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}
}
],
"modified": "2026-10-28T02:30:39.080477726Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/0xxx/CVE-2022-0897.json",
"https://nvd.nist.gov/vuln/detail/CVE-2022-0897",
"https://security.gentoo.org/glsa/202210-06",
"https://bugzilla.redhat.com/show_bug.cgi?id=2063883",
"https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html"
],
"provider_metadata": {
"cwe_ids": [
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],
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"unresolved_ranges": [
{
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{
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{
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},
{
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}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/0xxx/CVE-2022-0897.json"
}
},
"related_cves": [
{
"value": "CVE-2022-0897",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 506765,
"published_at": "2022-03-25T00:00:00+00:00"
}