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Fencer Intel
medium 6.9

CVE-2011-1011 json

The seunshare_mount function in sandbox/seunshare.c in seunshare in certain Red Hat packages of policycoreutils 2.0.83 and earlier in Red H…

published 2011-02-24 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1028

cvss
6.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

The seunshare_mount function in sandbox/seunshare.c in seunshare in certain Red Hat packages of policycoreutils 2.0.83 and earlier in Red Hat Enterprise Linux (RHEL) 6 and earlier, and Fedora 14 and earlier, mounts a new directory on top of /tmp without assigning root ownership and the sticky bit to this new directory, which allows local users to replace or delete arbitrary /tmp files, and consequently cause a denial of service or possibly gain privileges, by running a setuid application that relies on /tmp, as demonstrated by the ksu application.

Patch / fix

  • policycoreutils RHEL 6 2.0.83-19.8.el6_0
  • selinux-policy RHEL 6 3.7.19-54.el6_0.5
  • selinux-policy-mls RHEL 6 3.7.19-54.el6_0.5
  • policycoreutils-gui RHEL 6 2.0.83-19.8.el6_0
  • policycoreutils-python RHEL 6 2.0.83-19.8.el6_0
  • selinux-policy-minimum RHEL 6 3.7.19-54.el6_0.5
  • policycoreutils-newrole RHEL 6 2.0.83-19.8.el6_0
  • policycoreutils-sandbox RHEL 6 2.0.83-19.8.el6_0

red hat advisories RHSA-2011:0414

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-2011-1011 updated cvss 6.9

policycoreutils: insecure temporary directory handling in seunshare

  • Red Hat Enterprise Linux Desktop (v. 6) selinux-policy 3.7.19-54.el6_0.5, policycoreutils 2.0.83-19.8.el6_0, selinux-policy-mls 3.7.19-54.el6_0.5, policycoreutils-gui 2.0.83-19.8.el6_0, policycoreutils-python 2.0.83-19.8.el6_0, selinux-policy-minimum 3.7.19-54.el6_0.5, +3 more Red Hat Enterprise Linux Desktop Optional (v. 6) selinux-policy 3.7.19-54.el6_0.5 Red Hat Enterprise Linux HPC Node (v. 6) selinux-policy 3.7.19-54.el6_0.5, policycoreutils 2.0.83-19.8.el6_0, selinux-policy-mls 3.7.19-54.el6_0.5, policycoreutils-python 2.0.83-19.8.el6_0, selinux-policy-minimum 3.7.19-54.el6_0.5, policycoreutils-newrole 2.0.83-19.8.el6_0, +1 more Red Hat Enterprise Linux HPC Node Optional (v. 6) selinux-policy 3.7.19-54.el6_0.5, policycoreutils 2.0.83-19.8.el6_0, policycoreutils-gui 2.0.83-19.8.el6_0, policycoreutils-sandbox 2.0.83-19.8.el6_0 Red Hat Enterprise Linux Server (v. 6) selinux-policy 3.7.19-54.el6_0.5, policycoreutils 2.0.83-19.8.el6_0, selinux-policy-mls 3.7.19-54.el6_0.5, policycoreutils-gui 2.0.83-19.8.el6_0, policycoreutils-python 2.0.83-19.8.el6_0, selinux-policy-minimum 3.7.19-54.el6_0.5, +3 more Red Hat Enterprise Linux Server Optional (v. 6) selinux-policy 3.7.19-54.el6_0.5
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) selinux-policy 3.7.19-54.el6_0.5, policycoreutils 2.0.83-19.8.el6_0, selinux-policy-mls 3.7.19-54.el6_0.5, policycoreutils-gui 2.0.83-19.8.el6_0, policycoreutils-python 2.0.83-19.8.el6_0, selinux-policy-minimum 3.7.19-54.el6_0.5, +3 more Red Hat Enterprise Linux Workstation Optional (v. 6) selinux-policy 3.7.19-54.el6_0.5
    fixed: vendor fix RHSA-2011:0414

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

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls

References

Sources

Fencer Intel 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.