FKIE_CVE-2026-9639
Vulnerability from fkie_nvd - Published: 2026-06-26 16:16 - Updated: 2026-07-02 13:47
Severity ?
Summary
Nil-pointer dereference in CreateCustomVolumeFromBackup in LXD up to version 6.8 and 5.21 on Linux allows an authenticated user with can_create_storage_volumes permissions to cause a denial of service via a specially crafted custom-volume backup tarball that omits the expires_at snapshot field.
References
| URL | Tags | ||
|---|---|---|---|
| security@ubuntu.com | https://github.com/canonical/lxd/pull/18320 | Issue Tracking, Patch | |
| security@ubuntu.com | https://github.com/canonical/lxd/pull/18390 | Issue Tracking, Patch | |
| security@ubuntu.com | https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8 | Exploit, Patch, Vendor Advisory | |
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8 | Exploit, Patch, Vendor Advisory |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"packageName": "LXD",
"platforms": [
"Linux"
],
"product": "LXD",
"repo": "https://github.com/canonical/lxd",
"vendor": "Canonical",
"versions": [
{
"lessThan": "5.21.5",
"status": "affected",
"version": "5.21.0",
"versionType": "semver"
},
{
"lessThan": "6.9",
"status": "affected",
"version": "6.0",
"versionType": "semver"
}
]
}
],
"source": "security@ubuntu.com"
}
],
"configurations": [
{
"nodes": [
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"versionEndExcluding": "5.21.5",
"versionStartIncluding": "5.0.0",
"vulnerable": true
},
{
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"versionEndExcluding": "6.9",
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"vulnerable": true
}
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"negate": false,
"operator": "OR"
},
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Nil-pointer dereference in CreateCustomVolumeFromBackup in LXD up to version 6.8 and 5.21 on Linux allows an authenticated user with can_create_storage_volumes permissions to cause a denial of service via a specially crafted custom-volume backup tarball that omits the expires_at snapshot field."
}
],
"id": "CVE-2026-9639",
"lastModified": "2026-07-02T13:47:00.747",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "security@ubuntu.com",
"type": "Secondary"
}
],
"ssvcV203": [
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"role": "CISA Coordinator",
"timestamp": "2026-06-26T16:01:50.334142Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-26T16:16:37.143",
"references": [
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],
"sourceIdentifier": "security@ubuntu.com",
"vulnStatus": "Analyzed",
"weaknesses": [
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"description": [
{
"lang": "en",
"value": "CWE-476"
}
],
"source": "security@ubuntu.com",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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