A Git security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 22.04 LTS, and 22.10.

USN-5810-1: Git vulnerabilities

=========================================================================
Ubuntu Security Notice USN-5810-1
January 17, 2023

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

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in Git.

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

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 22.10:
git 1:2.37.2-1ubuntu1.2

Ubuntu 22.04 LTS:
git 1:2.34.1-1ubuntu1.6

Ubuntu 20.04 LTS:
git 1:2.25.1-1ubuntu3.7

Ubuntu 18.04 LTS:
git 1:2.17.1-1ubuntu0.14

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

References:
  https://ubuntu.com/security/notices/USN-5810-1
CVE-2022-23521, CVE-2022-41903

Package Information:
  https://launchpad.net/ubuntu/+source/git/1:2.37.2-1ubuntu1.2
  https://launchpad.net/ubuntu/+source/git/1:2.34.1-1ubuntu1.6
  https://launchpad.net/ubuntu/+source/git/1:2.25.1-1ubuntu3.7
  https://launchpad.net/ubuntu/+source/git/1:2.17.1-1ubuntu0.14