CVE-2025-12818 (GCVE-0-2025-12818)

Vulnerability from cvelistv5 – Published: 2025-11-13 13:00 – Updated: 2025-11-13 13:59
VLAI
Title
PostgreSQL libpq undersizes allocations, via integer wraparound
Summary
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.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
n/a PostgreSQL Affected: 18 , < 18.1 (rpm)
Affected: 17 , < 17.7 (rpm)
Affected: 16 , < 16.11 (rpm)
Affected: 15 , < 15.15 (rpm)
Affected: 14 , < 14.20 (rpm)
Affected: 0 , < 13.23 (rpm)
Credits
The PostgreSQL project thanks Aleksey Solovev (Positive Technologies) for reporting this problem.
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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