vulnerability

Red Hat: CVE-2025-6491: php: NULL Pointer Dereference in PHP SOAP Extension via Large XML Namespace Prefix (Multiple Advisories)

Name: Red Hat: CVE-2025-6491: php: NULL Pointer Dereference in PHP SOAP Extension via Large XML Namespace Prefix (Multiple Advisories)
Creator: Red Hat
Published: 2025-07-05T00:00:00.000Z

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Severity

CVSS

(AV:N/AC:M/Au:N/C:N/I:N/A:C)

Published

Jul 5, 2025

Added

Jul 9, 2025

Modified

Jun 17, 2026

Description

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.

Solutions

redhat-upgrade-apcu-panelredhat-upgrade-libzipredhat-upgrade-libzip-debuginforedhat-upgrade-libzip-debugsourceredhat-upgrade-libzip-develredhat-upgrade-libzip-toolsredhat-upgrade-libzip-tools-debuginforedhat-upgrade-phpredhat-upgrade-php-bcmathredhat-upgrade-php-bcmath-debuginforedhat-upgrade-php-cliredhat-upgrade-php-cli-debuginforedhat-upgrade-php-commonredhat-upgrade-php-common-debuginforedhat-upgrade-php-dbaredhat-upgrade-php-dba-debuginforedhat-upgrade-php-dbgredhat-upgrade-php-dbg-debuginforedhat-upgrade-php-debuginforedhat-upgrade-php-debugsourceredhat-upgrade-php-develredhat-upgrade-php-embeddedredhat-upgrade-php-embedded-debuginfo

References

Rapid7 Labs

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