==========================================================================
Ubuntu Security Notice USN-7953-1
January 12, 2026

php7.2, php7.4, php8.1, php8.3, php8.4 vulnerabilities
==========================================================================

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

- Ubuntu 25.10
- Ubuntu 25.04
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in PHP.

Software Description:
- php8.4: HTML-embedded scripting language interpreter
- php8.3: HTML-embedded scripting language interpreter
- php8.1: HTML-embedded scripting language interpreter
- php7.4: HTML-embedded scripting language interpreter
- php7.2: HTML-embedded scripting language interpreter

Details:

It was discovered that PHP incorrectly handled memory while reading images
in multi-chunk mode. An attacker could possibly use this issue to obtain
sensitive information. This issue only affected Ubuntu 24.04 LTS, Ubuntu
25.04 and Ubuntu 25.10. (CVE-2025-14177)

It was discovered that PHP incorrectly handled memory when element count
exceeds 32-bit limit. An attacker could possibly use this issue to cause
a denial of service. (CVE-2025-14178)

It was discovered that PHP incorrectly handled memory when using the PDO
PostgreSQL driver. An attacker could possibly use this issue to cause a
denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu
24.04 LTS, Ubuntu 25.04 and Ubuntu 25.10. (CVE-2025-14180)

Update instructions:

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

Ubuntu 25.10
  php8.4                          8.4.11-1ubuntu1.1

Ubuntu 25.04
  php8.4                          8.4.5-1ubuntu1.2

Ubuntu 24.04 LTS
  php8.3                          8.3.6-0ubuntu0.24.04.6

Ubuntu 22.04 LTS
  php8.1                          8.1.2-1ubuntu2.23

Ubuntu 20.04 LTS
  php7.4                          7.4.3-4ubuntu2.29+esm3
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  php7.2                          7.2.24-0ubuntu0.18.04.17+esm12
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7953-1
  CVE-2025-14177, CVE-2025-14178, CVE-2025-14180

Package Information:
  https://launchpad.net/ubuntu/+source/php8.4/8.4.11-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/php8.4/8.4.5-1ubuntu1.2
  https://launchpad.net/ubuntu/+source/php8.3/8.3.6-0ubuntu0.24.04.6
  https://launchpad.net/ubuntu/+source/php8.1/8.1.2-1ubuntu2.23