CVE-2025-12818 — PostgreSQL libpq undersizes allocations, via integer wraparound
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…
Published: 2025-11-13 · CVSS: 5.9 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7