CVE catalog
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, 5.21.8 and 6.10) on Linux allows an authenticated client that can create instan
- Severity
- Critical · CVSS 9.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.41% · Oct 25, 2026
Improper link resolution in the migration receive path in Canonical LXD versions 4.0 and later (fixed in 4.0.14, 5.0.10, 5.21.8 and 6.10) on Linux allows an authenticated client that can create instances or custom storage volumes in a project, or a malicious migration source server, to write attacker-controlled files to arbitrary paths on the target host as root, leading to full host compromise. The attacker does this with a crafted rsync or btrfs send stream that plants a symlink in the transferred volume, such as rootfs or root.img, and then writes through it.
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 | vulnerable |
| Debian | lxd | trixie-security | 5.0.2+git20231211.1364ae4-9+deb13u7 | vulnerable |
| Debian | lxd | bookworm | 5.0.2-5+deb12u6 | vulnerable |
| Debian | lxd | bookworm-security | 5.0.2-5+deb12u6 | vulnerable |
| Ubuntu | lxd | pro | 2.18-0ubuntu6 | vulnerable |
| Ubuntu | lxd | pro | 2.19-0ubuntu1 | vulnerable |
| Ubuntu | lxd | pro | 2.20-0ubuntu3 | vulnerable |
| Ubuntu | lxd | pro | 2.20-0ubuntu4 | vulnerable |
| Ubuntu | lxd | pro | 2.21-0ubuntu1 | vulnerable |
| Ubuntu | lxd | pro | 2.21-0ubuntu2 | vulnerable |
| Ubuntu | lxd | pro | 2.21-0ubuntu3 | vulnerable |
| Ubuntu | lxd | pro | 2.21-0ubuntu4 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0~beta2-0ubuntu3 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0~beta3-0ubuntu3 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0~beta5-0ubuntu2 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0~beta7-0ubuntu1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0-0ubuntu1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0-0ubuntu2 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0-0ubuntu3 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0-0ubuntu4 | vulnerable |
| Ubuntu | lxd | pro | 3.0.1-0ubuntu1~18.04.1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.2-0ubuntu1~18.04.1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.3-0ubuntu1~18.04.1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.3-0ubuntu1~18.04.2 | vulnerable |
| Ubuntu | lxd | pro | 3.0.3-0ubuntu1~18.04.2+esm1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.3-0ubuntu1~18.04.2+esm2 | vulnerable |
| Ubuntu | lxd | pro | 3.0.3-0ubuntu1~18.04.2+esm3 | vulnerable |
| Ubuntu | lxd | 20.04 | 1:0.7 | vulnerable |
| Ubuntu | lxd | 20.04 | 1:0.8 | vulnerable |
| Ubuntu | lxd | 20.04 | 1:0.9 | vulnerable |
| Ubuntu | lxd | 20.04 | 1:0.10 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | lxd | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | lxd | source | bookworm | (unfixed) | end-of-life | Not reported | 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)]
- [golang-github-canonical-lxd-dev]Affected
Source package: [lxd]
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· all · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· all · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· all · trixie-securityAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· all · trixie-securityAffected
nvd · lxd · debian · 13
- [lxd]Affected
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixie-securityAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixie-securityAffected
nvd · lxd · debian · 13
- [lxd-agent]Affected
Source package: [lxd]
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixie-securityAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixie-securityAffected
nvd · lxd · debian · 13
- [lxd-client]Affected
Source package: [lxd]
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixie-securityAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixie-securityAffected
nvd · lxd · debian · 13
- [lxd-migrate]Affected
Source package: [lxd]
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixie-securityAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixie-securityAffected
nvd · lxd · debian · 13
- [lxd-tools]Affected
Source package: [lxd]
Details (4)
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixieAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· amd64 · trixie-securityAffected
nvd · lxd · debian · 13
5.0.2+git20231211.1364ae4-9+deb13u7· arm64 · trixie-securityAffected
nvd · lxd · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-87799]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-87799]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-87799]
- [https://security-tracker.debian.org/tracker/CVE-2026-87799]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]