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CVE-2026-9639

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3308e5e4ac4838114332c4fe026a3df70f2e3f5127568bcfca057151776455dc
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"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"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:37521cd5057f48f74bb082e0aafe1efbdedac056c94135a0566612d54eed8b49 · sha256:8bab036ee6bc8f5f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"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"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:37521cd5057f48f74bb082e0aafe1efbdedac056c94135a0566612d54eed8b49 · sha256:8bab036ee6bc8f5f… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-476","description":"CWE-476 NULL pointer dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:37521cd5057f48f74bb082e0aafe1efbdedac056c94135a0566612d54eed8b49 · sha256:8bab036ee6bc8f5f… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"tags":["patch"],"url":"https://github.com/canonical/lxd/pull/18320"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:37521cd5057f48f74bb082e0aafe1efbdedac056c94135a0566612d54eed8b49 · sha256:8bab036ee6bc8f5f… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/canonical/lxd/pull/18390"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:37521cd5057f48f74bb082e0aafe1efbdedac056c94135a0566612d54eed8b49 · sha256:8bab036ee6bc8f5f… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:37521cd5057f48f74bb082e0aafe1efbdedac056c94135a0566612d54eed8b49 · sha256:8bab036ee6bc8f5f… · /containers/adp/0/references/0
{"tags":["vdb-entry","vendor-advisory"],"url":"https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:37521cd5057f48f74bb082e0aafe1efbdedac056c94135a0566612d54eed8b49 · sha256:8bab036ee6bc8f5f… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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