A Git regression update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 21.10, and 22.04 LTS.

USN-5376-3: Git regression

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Ubuntu Security Notice USN-5376-3
April 26, 2022

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

- Ubuntu 22.04 LTS
- Ubuntu 21.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

UNS-5376-1 was missing patches to properly fix the addressed issues.

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

Details:

USN-5376-1 fixed vulnerabilities in Git, some patches were missing to properly fix
the issue. This update fixes the problem.

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 22.04 LTS:
git 1:2.34.1-1ubuntu1.2

Ubuntu 21.10:
git 1:2.32.0-1ubuntu1.2

Ubuntu 20.04 LTS:
git 1:2.25.1-1ubuntu3.4

Ubuntu 18.04 LTS:
git 1:2.17.1-1ubuntu0.11

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

References:
  https://ubuntu.com/security/notices/USN-5376-3
  https://ubuntu.com/security/notices/USN-5376-1
  https://launchpad.net/bugs/1970260

Package Information:
  https://launchpad.net/ubuntu/+source/git/1:2.34.1-1ubuntu1.2
  https://launchpad.net/ubuntu/+source/git/1:2.32.0-1ubuntu1.2
  https://launchpad.net/ubuntu/+source/git/1:2.25.1-1ubuntu3.4
  https://launchpad.net/ubuntu/+source/git/1:2.17.1-1ubuntu0.11