high7.8
CVE-2026-3888
Local privilege escalation in snapd on Linux allows local attackers to get root privilege by re-creating snap's private /tmp directory when systemd-tmpfiles is…
Impact
Local privilege escalation in snapd on Linux allows local attackers to get root privilege by re-creating snap's private /tmp directory when systemd-tmpfiles is configured to automatically clean up this directory. This issue affects Ubuntu 16.04 LTS, 18.04 LTS, 20.04 LTS, 22.04 LTS, and 24.04 LTS.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Canonical | Ubuntu Linux | Versions 16.04, 18.04, 20.04, 22.04, 24.04 |
Weakness classification
References
- NVD record
- CVE.org record
- https://blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-root
- https://cdn2.qualys.com/advisory/2026/03/17/snap-confine-systemd-tmpfiles.txt
- https://discourse.ubuntu.com/t/snapd-local-privilege-escalation-cve-2026-3888
- https://ubuntu.com/security/CVE-2026-3888
- https://ubuntu.com/security/notices/USN-8102-1
- http://www.openwall.com/lists/oss-security/2026/03/18/1