Bug 2499726 - CVE-2026-6637 postgresql16: PostgreSQL: Arbitrary code execution vulnerability in 'refint' module [fedora-all]
Summary: CVE-2026-6637 postgresql16: PostgreSQL: Arbitrary code execution vulnerabilit...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: postgresql16
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Filip Januš
QA Contact:
URL:
Whiteboard: {"flaws": ["cd8c0edd-bda4-4529-abd8-4...
Depends On:
Blocks: CVE-2026-6637
TreeView+ depends on / blocked
 
Reported: 2026-07-13 17:00 UTC by Jon Weiser
Modified: 2026-08-01 00:53 UTC (History)
3 users (show)

Fixed In Version: postgresql16-16.14-1.fc45
Clone Of:
Environment:
Last Closed: 2026-07-23 22:11:35 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Jon Weiser 2026-07-13 17:00:55 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Stack buffer overflow in PostgreSQL module "refint" allows an unprivileged database user to execute arbitrary code as the operating system user running the database.  A distinct attack is possible if the application declares a user-controlled column as a "refint" cascade primary key and facilitates user-controlled updates to that column.  In that case, a SQL injection allows a primary key update value provider to execute arbitrary SQL as the database user performing the primary key update.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

Comment 1 Fedora Update System 2026-07-23 12:21:33 UTC
FEDORA-2026-f8ee1fd482 (postgresql16-16.14-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-f8ee1fd482

Comment 2 Fedora Update System 2026-07-23 14:39:05 UTC
FEDORA-2026-5b2e6bf881 (postgresql16-16.14-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5b2e6bf881

Comment 3 Fedora Update System 2026-07-23 22:11:35 UTC
FEDORA-2026-5b2e6bf881 (postgresql16-16.14-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 4 Fedora Update System 2026-07-24 01:29:16 UTC
FEDORA-2026-f8ee1fd482 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-f8ee1fd482`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-f8ee1fd482

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-08-01 00:53:48 UTC
FEDORA-2026-f8ee1fd482 (postgresql16-16.14-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.


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