What’s Vulnerable › Vulnerabilities

CVE-2015-3170

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-07-21 · updated 2026-06-17
• Weakness: CWE-254

Description

selinux-policy when sysctl fs.protected_hardlinks are set to 0 allows local users to cause a denial of service (SSH login prevention) by creating a hardlink to /etc/passwd from a directory named .config, and updating selinux-policy.

Affected products

• SELinux Project Selinux: all versions

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1218672
• https://bugzilla.redhat.com/show_bug.cgi?id=1218672

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