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7.2 High

CVE-2026-9640 A privilege escalation vulnerability exists in LXD from 6.0 before 6.9, 5.21.0 before 5.21.5, and 5.0.0 before 5.0.7…

Description

A privilege escalation vulnerability exists in LXD from 6.0 before 6.9, 5.21.0 before 5.21.5, and 5.0.0 before 5.0.7 regarding the handling of project-restriction policies during snapshot restoration.. An authenticated project operator in a restricted multi-tenant environment can bypass policy restrictions by importing a maliciously crafted instance backup containing restricted configuration keys within a snapshot. When the snapshot is restored, these restricted keys are applied to the live instance without policy validation. Starting the modified instance grants the operator unauthorized host root access.

Affected products and versions

Product Affected versions Fixed in
LXD 6.0 6.0 → < 6.9 6.9
LXD 5.21 5.21.0 → < 5.21.5 5.21.5
LXD 5.0 5.0.0 → < 5.0.7 5.0.7

References

Timeline

  1. Published
  2. Last modified

Other CVEs of LXD

The 47 CVEs of LXD →
CVE-2026-112816 Improper certificate validation in the HTTPS listener in Canonical LXD 4.0.14, 5.0.10, 5.21.8, 6.9 before 4.0.15,… 10.0 Critical CVE-2026-87798 Improper link resolution in the recursive file pull feature of the LXD CLI client in Canonical LXD versions 4.0.2 up… 5.8 Medium CVE-2026-87799 Improper link resolution in the migration receive path in Canonical LXD versions 4.0 and later (fixed in 4.0.14, 5.0.10,… 9.9 Critical CVE-2026-97335 Incorrect authorization in the custom storage volume creation endpoint in Canonical LXD versions 5.0.0 and later… 7.7 High
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