CVE-2011-3630 Memory corruption in hardlink

What is CVE-2011-3630?

CVE-2011-3630 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 26 Nov 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Hardlink before 0.1.2 suffer from multiple stack-based buffer overflow flaws because of the way directory trees with deeply nested directories are processed. 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 the privileges of the user running the hardlink executable.

Weakness: CWE-787

Which versions are affected by CVE-2011-3630?

It affects 3 products.

Products include Debian Debian Linux, Hardlink Project Hardlink, Redhat Enterprise Linux.

How do I fix CVE-2011-3630?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2011-3630 being exploited?

There is no known exploitation of CVE-2011-3630 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-pc7f-j836-p34f.