CVE-2024-32020: git — Exploit & Fix

Description

Git is a revision control system. Prior to versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and 2.39.4, local clones may end up hardlinking files into the target repository's object database when source and target repository reside on the same disk. If the source repository is owned by a different user, then those hardlinked files may be rewritten at any point in time by the untrusted user. Cloning local repositories will cause Git to either copy or hardlink files of the source repository into the target repository. This significantly speeds up such local clones compared to doing a "proper" clone and saves both disk space and compute time. When cloning a repository located on the same disk that is owned by a different user than the current user we also end up creating such hardlinks. These files will continue to be owned and controlled by the potentially-untrusted user and can be rewritten by them at will in the future. The problem has been patched in versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and 2.39.4.

Is your site exposed to CVE-2024-32020?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

3.9

LOW

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:L

Weakness Type (CWE)

CWE-281 CWE-281

Affected Products

Vendor	Product	Versions
git-scm	git	< 2.39.4
git-scm	git	2.40.0 — 2.40.2
git-scm	git	2.42.0 — 2.42.2
git-scm	git	2.43.0 — 2.43.4
git-scm	git	All
git-scm	git	All
git-scm	git	All
fedoraproject	fedora	All

References

Frequently Asked Questions

What is CVE-2024-32020? +

Git is a revision control system. Prior to versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and 2.39.4, local clones may end up hardlinking files into the target repository's object database when source and target repository reside on the same disk. If the source repository is owned by a different user, then those hardlinked files may be rewritten at any point in time by the untrusted user. Cloning local repositories will cause Git to either copy or hardlink files of the source repository into the target repository. This significantly speeds up such local clones compared to doing a "proper" clone and saves both disk space and compute time. When cloning a repository located on the same disk that is owned by a different user than the current user we also end up creating such hardlinks. These files will continue to be owned and controlled by the potentially-untrusted user and can be rewritten by them at will in the future. The problem has been patched in versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and 2.39.4. It has a CVSS v3.1 base score of 3.9 (LOW).

How severe is CVE-2024-32020? +

CVE-2024-32020 has a CVSS v3.1 score of 3.9 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2024-32020? +

CVE-2024-32020 affects products from fedoraproject, git-scm, specifically: fedora, git. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-32020? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-44947

A missing clean-up in the legacy Project Role Template Binding (PRTB) reconciler in Rancher versions 2.13.0 up to 2.13.7 and …

CVE-2025-7346

Any unauthenticated attacker can bypass the localhost restrictions posed by the application and utilize this to create arbitrary packages

CVE-2026-23556

When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are leaked. When …

CVE-2026-34744

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior permit a user to list and …

CVE-2026-4360

In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content …

CVE-2025-32696

Improper Preservation of Permissions vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/actions/RevertAction.Php, includes/api/ApiFileRevert.Php. This issue …