CVE Vulnerabilities

CVE-2025-6491

NULL Pointer Dereference

Published: Jul 13, 2025 | Modified: Jul 14, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
5.9 MODERATE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

In PHP versions:8.1.* before 8.1.33, 8.2.* before 8.2.29, 8.3.* before 8.3.23, 8.4.* before 8.4.10 when parsing XML data in SOAP extensions, overly large (>2Gb) XML namespace prefix may lead to null pointer dereference. This may lead to crashes and affect the availability of the target server.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Php8.1 Ubuntu upstream *
Php8.3 Ubuntu oracular *
Php8.3 Ubuntu upstream *
Php8.4 Ubuntu upstream *

Potential Mitigations

References