DEBIAN-CVE-2026-78408
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-78408
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78408.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-78408
- Upstream
- Published
- 2026-09-02T16:17:23Z
- Modified
- 2026-09-16T22:00:06Z
- Severity
-
- 7.9 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
The nsenter --join-cgroup option opens the target cgroup.procs file as root and leaves that file descriptor open across later namespace and credential changes and across execve(). Because the kernel checks later cgroup migrations using the credentials from the original open, a program run in an attacker-controlled target can inherit root's ability to move host processes between cgroups. After a privileged operator uses --join-cgroup against that target, an unprivileged user can migrate and terminate unrelated root processes.
- References
Affected packages
Debian:12 / util-linux
Package
- Name
- util-linux
- Purl
- pkg:deb/debian/util-linux?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
2.*
2.38.1-5
2.38.1-5+deb12u1
2.38.1-5+deb12u2
2.38.1-5+deb12u3
2.38.1-5+loong64
2.38.1-6
2.39.1-1
2.39.1-2
2.39.1-3
2.39.1-4
2.39.2-1
2.39.2-2
2.39.2-2.1
2.39.2-2.2
2.39.2-3
2.39.2-4
2.39.2-5
2.39.2-6
2.39.3-1
2.39.3-2
2.39.3-3
2.39.3-4
2.39.3-5
2.39.3-6
2.39.3-6.1~exp1
2.39.3-6.1
2.39.3-7
2.39.3-8
2.39.3-9
2.39.3-10
2.39.3-11
2.40~rc2-1
2.40~rc2-2
2.40~rc2-3
2.40~rc2-4
2.40~rc2-5
2.40~rc2-6
2.40~rc2-7
2.40~rc2-8
2.40-1
2.40-2
2.40-3
2.40-4
2.40-5
2.40-6
2.40-7
2.40-8
2.40.1-1
2.40.1-2
2.40.1-3
2.40.1-4
2.40.1-4+hurd.1
2.40.1-6
2.40.1-7
2.40.1-8
2.40.1-8.1
2.40.1-9
2.40.2-1
2.40.2-2
2.40.2-3
2.40.2-4
2.40.2-5
2.40.2-6
2.40.2-7
2.40.2-8
2.40.2-9
2.40.2-10
2.40.2-11
2.40.2-12
2.40.2-12+hurd.1
2.40.2-13
2.40.2-14
2.40.3-1
2.40.4-1
2.40.4-2
2.40.4-3
2.40.4-4
2.40.4-5
2.41~rc1-1
2.41~rc1-2
2.41~rc2-1
2.41-1
2.41-2
2.41-3
2.41-4
2.41-5
2.41.1-1
2.41.1-2
2.41.1-3
2.41.1-4
2.41.2-1
2.41.2-2
2.41.2-3
2.41.2-4
2.41.3-1
2.41.3-2
2.41.3-3
2.41.3-4
2.42~rc1-1
2.42~rc1-2
2.42~rc1-3
2.42~rc2-1
2.42-1
2.42-2
2.42-3
2.42-4
2.42-5
2.42-6
2.42.1-1
2.42.1-2
2.42.1-3
2.42.1-4
2.42.1-5
2.42.1-6
2.42.2-1
2.42.2-2
2.42.2-3
2.42.2-4
2.42.3-1
Debian:13 / util-linux
Package
- Name
- util-linux
- Purl
- pkg:deb/debian/util-linux?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
2.*
2.41-5
2.41.1-1
2.41.1-2
2.41.1-3
2.41.1-4
2.41.2-1
2.41.2-2
2.41.2-3
2.41.2-4
2.41.3-1
2.41.3-2
2.41.3-3
2.41.3-4
2.41.5-0+deb13u1
2.42~rc1-1
2.42~rc1-2
2.42~rc1-3
2.42~rc2-1
2.42-1
2.42-2
2.42-3
2.42-4
2.42-5
2.42-6
2.42.1-1
2.42.1-2
2.42.1-3
2.42.1-4
2.42.1-5
2.42.1-6
2.42.2-1
2.42.2-2
2.42.2-3
2.42.2-4
2.42.3-1
Debian:14 / util-linux
Package
- Name
- util-linux
- Purl
- pkg:deb/debian/util-linux?arch=source&distro=forky
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed2.42.3-1
Affected versions
2.*
2.41-5
2.41.1-1
2.41.1-2
2.41.1-3
2.41.1-4
2.41.2-1
2.41.2-2
2.41.2-3
2.41.2-4
2.41.3-1
2.41.3-2
2.41.3-3
2.41.3-4
2.42~rc1-1
2.42~rc1-2
2.42~rc1-3
2.42~rc2-1
2.42-1
2.42-2
2.42-3
2.42-4
2.42-5
2.42-6
2.42.1-1
2.42.1-2
2.42.1-3
2.42.1-4
2.42.1-5
2.42.1-6
2.42.2-1
2.42.2-2
2.42.2-3
2.42.2-4