CVE-2019-9025
php: Negative size parameter in mb_split
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · February 22, 2019
Updated · November 22, 2025
Description
An issue was discovered in PHP 7.3.x before 7.3.1. An invalid multibyte string supplied as an argument to the mb_split() function in ext/mbstring/php_mbregex.c can cause PHP to execute memcpy() with a negative argument, which could read and write past buffers allocated for the data.
Statement
This ship only affects PHP 7.3 which is not currently shipped with any Red Hat Products.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 7.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE not specified