CVE-2026-59677 Process Kill Attack Vector in killall() in seunshare
An unconfined user can kill root-owned processes in unconfined contexts due to missing authorization checks in seunshare.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-59677?
CVE-2026-59677 is a medium-severity missing authorization vulnerability in SELinuxProject selinux, published on 23 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A Missing Authorization vulnerability in selinux policycoreutils seunshares allows a user that is running in unconfined context to kill e.g. root-owned processes running also in unconfined context
This issue affects policycoreutils through 3.10.
Weakness: CWE-862
Which versions are affected by CVE-2026-59677?
How do I fix CVE-2026-59677?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-59677 being exploited?
There is no known exploitation of CVE-2026-59677 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-59677, GHSA-gm4w-wf6f-2ghm, OESA-2026-3345, OESA-2026-3346, OESA-2026-3347, OESA-2026-3348 and 2 more.