ALSA-2026:27742

See a problem?
Please try reporting it to the source first.
Source
https://errata.almalinux.org/10/ALSA-2026-27742.html
Import Source
https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json
JSON Data
https://api.osv.dev/v1/vulns/ALSA-2026:27742
Related
  • CVE-2026-6473
  • CVE-2026-6475
  • CVE-2026-6477
  • CVE-2026-6478
Published
2026-06-22T00:00:00Z
Modified
2026-08-12T12:27:02Z
Summary
Important: postgresql18 security update
Details

PostgreSQL is an advanced Object-Relational database management system (DBMS). The base postgresql package contains the client programs that you'll need to access a PostgreSQL DBMS server, as well as HTML documentation for the whole system. These client programs can be located on the same machine as the PostgreSQL server, or on a remote machine that accesses a PostgreSQL server over a network connection. The PostgreSQL server can be found in the postgresql-server sub-package.

Security Fix(es):

  • postgresql: PostgreSQL: Operating system account hijack via symlink following in pg_basebackup and pg_rewind (CVE-2026-6475)
  • postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory (CVE-2026-6477)
  • postgresql: PostgreSQL: Credential recovery via covert timing channel in MD5 password comparison (CVE-2026-6478)
  • postgresql: integer overflow can cause an undersized allocation and an out-of-bounds write (CVE-2026-6473)

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.

References

Affected packages

AlmaLinux:10
postgresql18

Package

Name
postgresql18
Purl
pkg:rpm/almalinux/postgresql18

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-contrib

Package

Name
postgresql18-contrib
Purl
pkg:rpm/almalinux/postgresql18-contrib

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-docs

Package

Name
postgresql18-docs
Purl
pkg:rpm/almalinux/postgresql18-docs

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-plperl

Package

Name
postgresql18-plperl
Purl
pkg:rpm/almalinux/postgresql18-plperl

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-plpython3

Package

Name
postgresql18-plpython3
Purl
pkg:rpm/almalinux/postgresql18-plpython3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-private-devel

Package

Name
postgresql18-private-devel
Purl
pkg:rpm/almalinux/postgresql18-private-devel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-private-libs

Package

Name
postgresql18-private-libs
Purl
pkg:rpm/almalinux/postgresql18-private-libs

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-server

Package

Name
postgresql18-server
Purl
pkg:rpm/almalinux/postgresql18-server

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-server-devel

Package

Name
postgresql18-server-devel
Purl
pkg:rpm/almalinux/postgresql18-server-devel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-static

Package

Name
postgresql18-static
Purl
pkg:rpm/almalinux/postgresql18-static

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-test

Package

Name
postgresql18-test
Purl
pkg:rpm/almalinux/postgresql18-test

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-test-rpm-macros

Package

Name
postgresql18-test-rpm-macros
Purl
pkg:rpm/almalinux/postgresql18-test-rpm-macros

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-upgrade

Package

Name
postgresql18-upgrade
Purl
pkg:rpm/almalinux/postgresql18-upgrade

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"
postgresql18-upgrade-devel

Package

Name
postgresql18-upgrade-devel
Purl
pkg:rpm/almalinux/postgresql18-upgrade-devel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-1.el10_2

Database specific

source 
"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:27742.json"