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Ubuntu Security Notice USN-7818-2
October 16, 2025

subversion vulnerability
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Apache Subversion could be made to crash if it opened a specially crafted
file.

Software Description:
- subversion: Advanced version control system

Details:

USN-7818-1 fixed vulnerabilities in Apache Subversion. This update provides
the corresponding update for Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu
22.04 LTS, and Ubuntu 24.04 LTS.

Original advisory details:

 It was discovered that Apache Subversion incorrectly parsed control
 characters in filenames. An attacker could possibly use this issue to
 commit a corrupted revision to a repository, leading to a denial of
 service.

Update instructions:

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

Ubuntu 24.04 LTS
  subversion                      1.14.3-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  subversion                      1.14.1-3ubuntu0.22.04.1+esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  subversion                      1.13.0-3ubuntu0.2+esm2
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  subversion                      1.9.7-4ubuntu1.1+esm1
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7818-2
  https://ubuntu.com/security/notices/USN-7818-1
  CVE-2024-46901