Vulnerability-Lookup

alsa-2026:0695

Vulnerability from osv_almalinux

Published

2026-01-15 00:00

Modified

2026-01-16 14:48

Summary

Moderate: libpq security update

Details

The libpq package provides the PostgreSQL client library, which allows client programs to connect to PostgreSQL servers.

Security Fix(es):

postgresql: libpq undersizes allocations, via integer wraparound (CVE-2025-12818)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "libpq"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "13.23-1.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "libpq-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "13.23-1.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The libpq package provides the PostgreSQL client library, which allows client programs to connect to PostgreSQL servers.   \n\nSecurity Fix(es):  \n\n  * postgresql: libpq undersizes allocations, via integer wraparound (CVE-2025-12818)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:0695",
  "modified": "2026-01-16T14:48:26Z",
  "published": "2026-01-15T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:0695"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-12818"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2414826"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2026-0695.html"
    }
  ],
  "related": [
    "CVE-2025-12818"
  ],
  "summary": "Moderate: libpq security update"
}

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

Vulnerability from cvelistv5 – Published: 2025-11-13 13:00 – Updated: 2025-11-13 13:59

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

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

PostgreSQL

References

URL

Tags

https://www.postgresql.org/support/security/CVE-2…

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

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-12818",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-13T13:59:26.597610Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-13T13:59:33.436Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "PostgreSQL",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "18.1",
              "status": "affected",
              "version": "18",
              "versionType": "rpm"
            },
            {
              "lessThan": "17.7",
              "status": "affected",
              "version": "17",
              "versionType": "rpm"
            },
            {
              "lessThan": "16.11",
              "status": "affected",
              "version": "16",
              "versionType": "rpm"
            },
            {
              "lessThan": "15.15",
              "status": "affected",
              "version": "15",
              "versionType": "rpm"
            },
            {
              "lessThan": "14.20",
              "status": "affected",
              "version": "14",
              "versionType": "rpm"
            },
            {
              "lessThan": "13.23",
              "status": "affected",
              "version": "0",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "The PostgreSQL project thanks Aleksey Solovev (Positive Technologies) for reporting this problem."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-190",
              "description": "Integer Overflow or Wraparound",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-13T13:00:12.911Z",
        "orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "shortName": "PostgreSQL"
      },
      "references": [
        {
          "url": "https://www.postgresql.org/support/security/CVE-2025-12818/"
        }
      ],
      "title": "PostgreSQL libpq undersizes allocations, via integer wraparound"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
    "assignerShortName": "PostgreSQL",
    "cveId": "CVE-2025-12818",
    "datePublished": "2025-11-13T13:00:12.911Z",
    "dateReserved": "2025-11-06T17:22:32.130Z",
    "dateUpdated": "2025-11-13T13:59:33.436Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted