CVE catalog
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 regarding the handling of project-restriction policies during snapshot restoration.
- Severity
- High · CVSS 7.2
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.63% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | lxd | trixie | 5.0.2+git20231211.1364ae4-9+deb13u7 | fixed |
| Debian | lxd | trixie-security | 5.0.2+git20231211.1364ae4-9+deb13u7 | fixed |
| Debian | lxd | bookworm | 5.0.2-5+deb12u6 | vulnerable |
| Debian | lxd | bookworm-security | 5.0.2-5+deb12u6 | vulnerable |
| Cpe | lxd | Not reported | Not reported | vulnerable |
| Cpe | lxd | Not reported | 5.0.7 | fixed |
| Cpe | lxd | Not reported | 5.21.5 | fixed |
| Cpe | lxd | Not reported | 6.9 | fixed |
| Cpe | lxd | Not reported | 6.9 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | lxd | source | trixie | 5.0.2+git20231211.1364ae4-9+deb13u7 | not yet assigned | Not reported | Not reported |
| Debian | lxd | source | bookworm | (unfixed) | end-of-life | Not reported | Not reported |
| Cpe | lxd | cpe | Not reported | 5.0.7 | Not reported | Not reported | Not reported |
| Cpe | lxd | cpe | Not reported | 5.21.5 | Not reported | Not reported | Not reported |
| Cpe | lxd | cpe | Not reported | 6.9 | Not reported | Not reported | Not reported |
| Cpe | lxd | cpe | Not reported | 6.9 | Not reported | NVD-CVE-2026-9640 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [lxd]Affected
Details (4)
5.0.2-5+deb12u6· amd64 · bookwormAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· arm64 · bookwormAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· amd64 · bookworm-securityAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· arm64 · bookworm-securityAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- [lxd-agent]Affected
Source package: [lxd]
Details (4)
5.0.2-5+deb12u6· amd64 · bookwormAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· arm64 · bookwormAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· amd64 · bookworm-securityAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· arm64 · bookworm-securityAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- [lxd-client]Affected
Source package: [lxd]
Details (4)
5.0.2-5+deb12u6· amd64 · bookwormAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· arm64 · bookwormAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· amd64 · bookworm-securityAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· arm64 · bookworm-securityAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- [lxd-migrate]Affected
Source package: [lxd]
Details (4)
5.0.2-5+deb12u6· amd64 · bookwormAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· arm64 · bookwormAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· amd64 · bookworm-securityAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· arm64 · bookworm-securityAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
- [lxd-tools]Affected
Source package: [lxd]
Details (4)
5.0.2-5+deb12u6· amd64 · bookwormAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· arm64 · bookwormAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· amd64 · bookworm-securityAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
5.0.2-5+deb12u6· arm64 · bookworm-securityAffected
nvd · lxd · debian · bookworm; nvd · lxd · debian · 12
[Debian 13 (Trixie)]
Source package: [lxd]
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· all · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· all · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· all · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· all · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
- [lxd]Fixed
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
- [lxd-agent]Fixed
Source package: [lxd]
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
- [lxd-client]Fixed
Source package: [lxd]
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
- [lxd-migrate]Fixed
Source package: [lxd]
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
- [lxd-tools]Fixed
Source package: [lxd]
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixieFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixie-securityFixed · Fixed:
5.0.2+git20231211.1364ae4-9+deb13u7nvd · lxd · debian · 13
Observed:
References
- [https://github.com/canonical/lxd/pull/18301]
- [https://github.com/canonical/lxd/pull/18303]
- [https://github.com/canonical/lxd/pull/18304]
- [https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-9640]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-9640]
- [https://security-tracker.debian.org/tracker/CVE-2026-9640]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]