James Henstridge discovered that snapd's default apparmor template did not restrict access to systemd-userdbd varlink interface. A local attacker could possibly use this issue to obtain sensitive information. ( CVE-2024-5300 ) Qualys discovered that snap-confine can be tricked to create attacker-controlled files at certain privileged locations. A local attacker could possibly use this issue to bypass intended restrictions and escalate privileges to root. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. ( CVE-2026-8933 ) Zygmunt Krynicki discovered that snapd's default seccomp template did not restrict the creation of executables with the set-user-ID attribute. A local attacker could possibly use this issue to create and execute setuid binaries. ( CVE-2026-15226 )
James Henstridge discovered that snapd's default apparmor template did not restrict access to systemd-userdbd varlink interface. A local attacker could possibly use this issue to obtain sensitive information. ( CVE-2024-5300 )
Qualys discovered that snap-confine can be tricked to create attacker-controlled files at certain privileged locations. A local attacker could possibly use this issue to bypass intended restrictions and escalate privileges to root. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. ( CVE-2026-8933 )
Zygmunt Krynicki discovered that snapd's default seccomp template did not restrict the creation of executables with the set-user-ID attribute. A local attacker could possibly use this issue to create and execute setuid binaries. ( CVE-2026-15226 )
James Henstridge discovered that snapd's default apparmor template did not restrict access to systemd-userdbd varlink interface. A local attacker could possibly use this issue to obtain sensitive information. ( CVE-2024-5300 ) Qualys discovered that snap-confine can be tricked to create attacker-controlled files at certain privileged locations. A local attacker could possibly use this issue to bypass intended restrictions and escalate privileges to root. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. ( CVE-2026-8933 ) Zygmunt Krynicki discovered that snapd's default seccomp template did not restrict the creation of executables with the set-user-ID attribute. A local attacker could possibly use this issue to create and execute setuid binaries. ( CVE-2026-15226 )
James Henstridge discovered that snapd's default apparmor template did not restrict access to systemd-userdbd varlink interface. A local attacker could possibly use this issue to obtain sensitive information. ( CVE-2024-5300 )
Qualys discovered that snap-confine can be tricked to create attacker-controlled files at certain privileged locations. A local attacker could possibly use this issue to bypass intended restrictions and escalate privileges to root. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. ( CVE-2026-8933 )
Zygmunt Krynicki discovered that snapd's default seccomp template did not restrict the creation of executables with the set-user-ID attribute. A local attacker could possibly use this issue to create and execute setuid binaries. ( CVE-2026-15226 )
After a standard system update you need to reboot your computer to make all the necessary changes.
The problem can be corrected by updating your system to the following package versions:
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.
The full story
This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.
