Ubuntu Product Security Update Advisory (CVE-2026-3888)

overview

We have released security updates that address vulnerabilities in Ubuntu products. users of affected products are encouraged to update to the latest version.

affected products

CVE-2026-3888

Ubuntu 25.10 versions: 2.73+ubuntu25.10.1 and below
Ubuntu 24.04 LTS versions: 2.73+ubuntu24.04.2 and below
Ubuntu 22.04 LTS version: 2.73+ubuntu22.04.1 and below
Ubuntu 20.04 LTS version: 2.67.1+20.04ubuntu1 through esm1 and below
Ubuntu 18.04 LTS version: 2.61.4ubuntu0.18.04.1+esm2 and below
Ubuntu 16.04 LTS versions: 2.less than 61.4ubuntu0.16.04.1+esm2

resolved vulnerabilities

Privilege escalation vulnerability in snapd in Ubuntu (CVE-2026-3888)

vulnerability patches

Vulnerability patches have been made available in the latest updates. please follow the instructions on the reference site to update to the latest version of the vulnerability patch.

CVE-2026-3888

Ubuntu 25.10 versions: 2.73+ubuntu25.10.1
Ubuntu 24.04 LTS version: 2.73+ubuntu24.04.2
Ubuntu 22.04 LTS version: 2.73+ubuntu22.04.1
Ubuntu 20.04 LTS version: 2.67.1+20.04ubuntu1~esm1
Ubuntu 18.04 LTS version: 2.61.4ubuntu0.18.04.1+esm2
Ubuntu 16.04 LTS version: 2.61.4ubuntu0.16.04.1+esm2

references

[1] cve-2026-3888
https://ubuntu.com/security/CVE-2026-3888