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

USN-5810-2: Git regression

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Ubuntu Security Notice USN-5810-2
January 19, 2023

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

USN-5810-1 introduced a regression in Git.

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

Details:

USN-5810-1 fixed vulnerabilities in Git. This update introduced a regression as it
was missing some commit lines. This update fixes the problem.

Original advisory details:

Markus Vervier and Eric Sesterhenn discovered that Git incorrectly handled certain
gitattributes. An attacker could possibly use this issue to cause a crash
or execute arbitrary code. (CVE-2022-23521)

Joern Schneeweisz discovered that Git incorrectly handled certain commands.
An attacker could possibly use this issue to cause a crash or execute
arbitrary code. (CVE-2022-41903)

Update instructions:

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

Ubuntu 20.04 LTS:
git 1:2.25.1-1ubuntu3.8

Ubuntu 18.04 LTS:
git 1:2.17.1-1ubuntu0.15

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

References:
  https://ubuntu.com/security/notices/USN-5810-2
  https://ubuntu.com/security/notices/USN-5810-1
  https://launchpad.net/bugs/2003246

Package Information:
  https://launchpad.net/ubuntu/+source/git/1:2.25.1-1ubuntu3.8
  https://launchpad.net/ubuntu/+source/git/1:2.17.1-1ubuntu0.15