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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2025-14178

Heap buffer overflow in array_merge()

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Status
Published
Published
Updated
Assigning organization
php

Description

In PHP versions:8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1, a heap buffer overflow occurs in array_merge() when the total element count of packed arrays exceeds 32-bit limits or HT_MAX_SIZE, due to an integer overflow in the precomputation of element counts using zend_hash_num_elements(). This may lead to memory corruption or crashes and affect the integrity and availability of the target server.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

PHP Group PHP

Default version status: affected

  • 8.1.* to < 8.1.34affected
  • 8.2.* to < 8.2.30affected
  • 8.3.* to < 8.3.29affected
  • 8.4.* to < 8.4.16affected
  • 8.5.* to < 8.5.1affected

References