Bug 2515314 (CVE-2026-15742) - CVE-2026-15742 postgresql-fuzzystrmatch: PostgreSQL fuzzystrmatch: Arbitrary code execution via integer wraparound
Summary: CVE-2026-15742 postgresql-fuzzystrmatch: PostgreSQL fuzzystrmatch: Arbitrary ...
Keywords:
Status: NEW
Alias: CVE-2026-15742
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2524555 2524556 2524557 2524558
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-13 13:29 UTC by OSIDB Bzimport
Modified: 2026-10-06 14:50 UTC (History)
10 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:67280 0 None None None 2026-09-14 13:31:58 UTC
Red Hat Product Errata RHSA-2026:67491 0 None None None 2026-09-15 08:14:45 UTC
Red Hat Product Errata RHSA-2026:67848 0 None None None 2026-09-16 08:54:06 UTC
Red Hat Product Errata RHSA-2026:69607 0 None None None 2026-09-22 02:39:44 UTC
Red Hat Product Errata RHSA-2026:69698 0 None None None 2026-09-21 22:12:46 UTC
Red Hat Product Errata RHSA-2026:69876 0 None None None 2026-09-22 08:34:38 UTC
Red Hat Product Errata RHSA-2026:69914 0 None None None 2026-09-22 11:39:17 UTC
Red Hat Product Errata RHSA-2026:69923 0 None None None 2026-09-22 10:27:15 UTC
Red Hat Product Errata RHSA-2026:69924 0 None None None 2026-09-23 15:55:07 UTC
Red Hat Product Errata RHSA-2026:70186 0 None None None 2026-09-22 12:42:57 UTC
Red Hat Product Errata RHSA-2026:70559 0 None None None 2026-09-23 06:29:08 UTC
Red Hat Product Errata RHSA-2026:70602 0 None None None 2026-09-23 07:34:30 UTC
Red Hat Product Errata RHSA-2026:70762 0 None None None 2026-09-23 13:22:42 UTC
Red Hat Product Errata RHSA-2026:70763 0 None None None 2026-09-23 20:29:03 UTC
Red Hat Product Errata RHSA-2026:70856 0 None None None 2026-09-23 16:15:29 UTC
Red Hat Product Errata RHSA-2026:72281 0 None None None 2026-09-28 03:48:55 UTC
Red Hat Product Errata RHSA-2026:72282 0 None None None 2026-09-28 03:04:44 UTC
Red Hat Product Errata RHSA-2026:72283 0 None None None 2026-09-28 03:03:42 UTC
Red Hat Product Errata RHSA-2026:72361 0 None None None 2026-09-28 05:41:32 UTC
Red Hat Product Errata RHSA-2026:72362 0 None None None 2026-09-28 05:38:07 UTC
Red Hat Product Errata RHSA-2026:72363 0 None None None 2026-09-28 05:35:00 UTC
Red Hat Product Errata RHSA-2026:73912 0 None None None 2026-09-30 11:09:28 UTC

Description OSIDB Bzimport 2026-08-13 13:29:11 UTC 
Integer wraparound in PostgreSQL fuzzystrmatch allows a user to direct writes to a huge range of addresses, executing arbitrary code as the operating system user running the database, via extreme inputs to SQL function levenshtein() or levenshtein_less_equal().  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.
Comment 2 Jon Orris 2026-09-14 13:31:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:67280 https://access.redhat.com/errata/RHSA-2026:67280
Comment 3 Jon Orris 2026-09-15 08:14:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:67491 https://access.redhat.com/errata/RHSA-2026:67491
Comment 4 Jon Orris 2026-09-16 08:54:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:67848 https://access.redhat.com/errata/RHSA-2026:67848
Comment 6 Jon Orris 2026-09-21 22:12:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:69698 https://access.redhat.com/errata/RHSA-2026:69698
Comment 7 Jon Orris 2026-09-22 02:39:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:69607 https://access.redhat.com/errata/RHSA-2026:69607
Comment 8 Jon Orris 2026-09-22 08:34:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:69876 https://access.redhat.com/errata/RHSA-2026:69876
Comment 9 Jon Orris 2026-09-22 10:27:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:69923 https://access.redhat.com/errata/RHSA-2026:69923
Comment 10 Jon Orris 2026-09-22 11:39:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:69914 https://access.redhat.com/errata/RHSA-2026:69914
Comment 11 Jon Orris 2026-09-22 12:42:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:70186 https://access.redhat.com/errata/RHSA-2026:70186
Comment 12 Jon Orris 2026-09-23 06:29:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:70559 https://access.redhat.com/errata/RHSA-2026:70559
Comment 13 Jon Orris 2026-09-23 07:34:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:70602 https://access.redhat.com/errata/RHSA-2026:70602
Comment 14 Jon Orris 2026-09-23 13:22:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:70762 https://access.redhat.com/errata/RHSA-2026:70762
Comment 15 Jon Orris 2026-09-23 15:55:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:69924 https://access.redhat.com/errata/RHSA-2026:69924
Comment 16 Jon Orris 2026-09-23 16:15:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:70856 https://access.redhat.com/errata/RHSA-2026:70856
Comment 17 Jon Orris 2026-09-23 20:29:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:70763 https://access.redhat.com/errata/RHSA-2026:70763
Comment 18 Jon Orris 2026-09-28 03:03:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:72283 https://access.redhat.com/errata/RHSA-2026:72283
Comment 19 Jon Orris 2026-09-28 03:04:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:72282 https://access.redhat.com/errata/RHSA-2026:72282
Comment 20 Jon Orris 2026-09-28 03:48:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:72281 https://access.redhat.com/errata/RHSA-2026:72281
Comment 21 Jon Orris 2026-09-28 05:34:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:72363 https://access.redhat.com/errata/RHSA-2026:72363
Comment 22 Jon Orris 2026-09-28 05:38:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:72362 https://access.redhat.com/errata/RHSA-2026:72362
Comment 23 Jon Orris 2026-09-28 05:41:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:72361 https://access.redhat.com/errata/RHSA-2026:72361
Comment 24 Akiyoshi Kurita 2026-09-29 04:27:17 UTC 
A public PoC / exploit for CVE-2026-15742 is now available.

PoC:
https://github.com/kmkz/Exploits/tree/master/2026/PostgreSQL%20fuzzystrmatch%20OOB%20write%20to%20RCE%20-%20CVE-2026-15742

Article:
https://securityonline.info/postgresql-rce-vulnerability-cve-2026-15742/

Red Hat CVE page:
https://access.redhat.com/security/cve/cve-2026-15742

The vulnerability allows a low-privileged PostgreSQL database user to achieve arbitrary code execution as the operating system user running the PostgreSQL server when the fuzzystrmatch extension is installed and available.

Red Hat currently assigns:

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Score: 7.5 (Important)

PostgreSQL upstream assigns:

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Score: 8.8

Since working public exploit code is now available, could Red Hat Product Security please review whether the current Attack Complexity: High (AC:H) assessment remains appropriate?

It may also be useful to update the CVE page to note that public exploit code is available.

Thank you.
Comment 25 Jon Orris 2026-09-30 11:09:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:73912 https://access.redhat.com/errata/RHSA-2026:73912
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