What’s Vulnerable › Vulnerabilities

CVE-2011-3631

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-11-26 · updated 2026-06-16
• Weakness: CWE-190

Description

Hardlink before 0.1.2 has multiple integer overflows leading to heap-based buffer overflows because of the way string lengths concatenation is done in the calculation of the required memory space to be used. A remote attacker could provide a specially-crafted directory tree and trick the local user into consolidating it, leading to hardlink executable crash or potentially arbitrary code execution with user privileges.

Affected products

• Debian Linux: 8.0, 9.0, 10.0
• Hardlink Project Hardlink: before 0.1.2 — fixed in 0.1.2
• Red Hat Enterprise Linux: 5.0, 6.0

How to fix

Upgrade to a fixed version: Hardlink Project Hardlink 0.1.2. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/security/cve/cve-2011-3631
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=645516
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3631
• https://security-tracker.debian.org/tracker/CVE-2011-3631
• https://access.redhat.com/security/cve/cve-2011-3631
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=645516
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3631
• https://security-tracker.debian.org/tracker/CVE-2011-3631

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