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Fencer Vulns
medium 6.8

CVE-2026-59677 json

Process Kill Attack Vector in killall() in seunshare

published 2026-07-23 3 mo ago modified 2026-10-24 16 d ago also EUVD-2026-47939

cvss
6.8
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

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.

Patch / fix

  • selinux-python Debian 14, Debian 13 3.7-1
  • policycoreutils Debian 14, Debian 13, Debian 12 2.7-1

debian advisories DEBIAN-CVE-2026-59677

  • policycoreutils hummingbird 1 3.11-2.1.hum1
  • policycoreutils-gui hummingbird 1 3.11-2.1.hum1
  • policycoreutils-dbus hummingbird 1 3.11-2.1.hum1
  • policycoreutils-newrole hummingbird 1 3.11-2.1.hum1
  • policycoreutils-sandbox hummingbird 1 3.11-2.1.hum1
  • python3-policycoreutils hummingbird 1 3.11-2.1.hum1
  • policycoreutils-restorecond hummingbird 1 3.11-2.1.hum1
  • policycoreutils-python-utils hummingbird 1 3.11-2.1.hum1

red hat advisories RHSA-2026:44343

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-59677 updated cvss 5.5

policycoreutils: Policycoreutils: Denial of Service via missing authorization in seunshares

  • Red Hat Enterprise Linux 6 policycoreutils, policycoreutils-gui, policycoreutils-python, policycoreutils-newrole, policycoreutils-sandbox, policycoreutils 3.11-1.el10 Red Hat Enterprise Linux 7 policycoreutils, policycoreutils-gui, policycoreutils-python, policycoreutils-newrole, policycoreutils-sandbox, policycoreutils 3.11-1.el10, +1 more Red Hat Enterprise Linux 8 policycoreutils-gui, policycoreutils-dbus, policycoreutils-newrole, policycoreutils-sandbox, python3-policycoreutils, policycoreutils 3.11-1.el10, +2 more Red Hat Enterprise Linux 9 policycoreutils-gui, policycoreutils-dbus, policycoreutils-newrole, policycoreutils-sandbox, python3-policycoreutils, policycoreutils 3.11-1.el10, +2 more Red Hat Enterprise Linux 10 policycoreutils 3.11-1.el10 Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9
    +1 more products
    Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Hardened Images policycoreutils 3.11-2.1.hum1, policycoreutils-gui 3.11-2.1.hum1, policycoreutils-dbus 3.11-2.1.hum1, policycoreutils-newrole 3.11-2.1.hum1, policycoreutils-sandbox 3.11-2.1.hum1, python3-policycoreutils 3.11-2.1.hum1, +2 more
    fixed: vendor fix RHSA-2026:44343

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA 4.0 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • SELinuxProject selinux

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.