CVE catalog
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
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.55% · Oct 25, 2026
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.
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 | 5.21.5 | 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 | 5.21.5 | 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-2026-9639 | 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/18320]
- [https://github.com/canonical/lxd/pull/18390]
- [https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-9639]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-9639]
- [https://security-tracker.debian.org/tracker/CVE-2026-9639]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]