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[USN-5376-6] Git regression

Posted on 02 March 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-5376-6
March 02, 2026

git regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

USN-5376-1 introduced a regression in Git

Software Description:
- git: fast, scalable, distributed revision control system

Details:

USN-5376-4 fixed a regression in Git. This update provides the
corresponding update for Ubuntu 18.04 LTS.

We apologize for the inconvenience.

Original advisory details:

俞晨东 discovered that Git incorrectly handled certain repository paths
in platforms with multiple users support. An attacker could possibly use
this issue to run arbitrary commands.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS
git 1:2.17.1-1ubuntu0.18+esm8
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5376-6
https://ubuntu.com/security/notices/USN-5376-5
https://ubuntu.com/security/notices/USN-5376-4
https://ubuntu.com/security/notices/USN-5376-3
https://ubuntu.com/security/notices/USN-5376-2
https://ubuntu.com/security/notices/USN-5376-1
https://launchpad.net/bugs/2142239

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