vulnerability

Red Hat: CVE-2025-14178: php: heap-based buffer overflow in array_merge() (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:C)
Published
Dec 27, 2025
Added
Jan 27, 2026
Modified
Feb 3, 2026

Description

A flaw was found in PHP. A heap-based buffer overflow occurs in the array_merge function when the total element count of packed arrays exceeds the 32-bit limit or the internal HT_MAX_SIZE due to an integer overflow in the precomputation of element counts using the zend_hash_num_elements function, causing a process crash and potentially memory corruption.

Solutions

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References

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