PostgreSQL libpq undersizes allocations, via integer wraparound_CVE-2025-12818

5.9 / 10

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

Integer wraparound in multiple PostgreSQL libpq client library functions allows an application input provider or network peer to cause libpq to undersize an allocation and write out-of-bounds by hundreds of megabytes. This results in a segmentation fault for the application using libpq. Versions before PostgreSQL 18.1, 17.7, 16.11, 15.15, 14.20, and 13.23 are affected.

Basic Information

ID CVE-2025-12818

Source PostgreSQL

Published Nov 13, 2025 at 13:00

Modified Nov 13, 2025 at 13:59

Affected Product

Vendor n/a

Product PostgreSQL

Version 18

Affected Versions n/a PostgreSQL 18
n/a PostgreSQL 17
n/a PostgreSQL 16
n/a PostgreSQL 15
n/a PostgreSQL 14
n/a PostgreSQL 0

CWE Classification

CWE-190

References

www.postgresql.org /support/security/CVE-2025-12818/

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    "published": "2025-11-13T13:00:12.911Z",
    "modified": "2025-11-13T13:59:33.436Z",
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    "title": "PostgreSQL libpq undersizes allocations, via integer wraparound",
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