postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory

A flaw was found in PostgreSQL libpq. A server superuser can exploit a buffer overflow vulnerability in the PQfn function, which is used by client functions such as loexport, loread, lolseek64, and lotell64. This allows the superuser to send an arbitrarily large response, overwriting the client's...

postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory

A flaw was found in PostgreSQL libpq. A server superuser can exploit a buffer overflow vulnerability in the PQfn function, which is used by client functions such as loexport, loread, lolseek64, and lotell64. This allows the superuser to send an arbitrarily large response, overwriting the client's...

Important: Red Hat Security Advisory: libpq security update

An update for libpq is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

ALSA-2026:27741 Important: postgresql security update

PostgreSQL is an advanced object-relational database management system DBMS. Security Fixes: postgresql: PostgreSQL: Operating system account hijack via symlink following in pgbasebackup and pgrewind CVE-2026-6475 postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite...

postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory

A flaw was found in PostgreSQL libpq. A server superuser can exploit a buffer overflow vulnerability in the PQfn function, which is used by client functions such as loexport, loread, lolseek64, and lotell64. This allows the superuser to send an arbitrarily large response, overwriting the client's...

RockyLinux 9 : postgresql:16 (RLSA-2026:26203)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:26203 advisory. postgresql: PostgreSQL: Operating system account hijack via symlink following in pgbasebackup and pgrewind CVE-2026-6475 postgresql: PostgreSQL libpq:...

JLSEC-2026-604

Use of inherently dangerous function PQfn..., resultisint=0, ... in PostgreSQL libpq loexport, loread, lolseek64, and lotell64 functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response. Like gets, PQfn..., resultisint=0, ... stores arbitrary-lengt...

Amazon Linux 2 : libpq, --advisory ALAS2POSTGRESQL14-2026-023 (ALASPOSTGRESQL14-2026-023)

The version of libpq installed on the remote host is prior to 14.23-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2POSTGRESQL14-2026-023 advisory. Use of inherently dangerous function PQfn..., resultisint=0, ... in PostgreSQL libpq loexport, loread, lolseek64,...

Important: libpq

Issue Overview: Use of inherently dangerous function PQfn..., resultisint=0, ... in PostgreSQL libpq loexport, loread, lolseek64, and lotell64 functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response. Like gets, PQfn..., resultisint=0, ... stores...

Important: postgresql16

Issue Overview: Missing authorization in PostgreSQL CREATE TYPE allows an object creator to hijack other queries that use searchpath to find user-defined types, including extension-defined types. That is to say, the victim will execute arbitrary SQL functions of the attacker's choice. Versions...

Important: postgresql

Issue Overview: Use of inherently dangerous function PQfn..., resultisint=0, ... in PostgreSQL libpq loexport, loread, lolseek64, and lotell64 functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response. Like gets, PQfn..., resultisint=0, ... stores...

Amazon Linux 2023 : libpq, libpq-devel (ALAS2023-2026-1711)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1711 advisory. Use of inherently dangerous function PQfn..., resultisint=0, ... in PostgreSQL libpq loexport, loread, lolseek64, and lotell64 functions allows the server superuser to overwrite a client stack...

OESA-2026-2381 libpq security update

PostgreSQL is a powerful, open source object-relational database system that uses and extends the SQL language combined with many features that safely store and scale the most complicated data workloads. This package provides the essential shared library for any PostgreSQL client program or...

USN-8294-1: PostgreSQL vulnerabilities

It was discovered that PostgreSQL did not correctly enforce authorization for CREATE TYPE. An attacker could possibly use this issue to execute arbitrary SQL functions. CVE-2026-6472 It was discovered that PostgreSQL incorrectly handled large user input in multiple server features. An attacker...

USN-8294-1 postgresql-14, postgresql-16, postgresql-17, postgresql-18 vulnerabilities

It was discovered that PostgreSQL did not correctly enforce authorization for CREATE TYPE. An attacker could possibly use this issue to execute arbitrary SQL functions. CVE-2026-6472 It was discovered that PostgreSQL incorrectly handled large user input in multiple server features. An attacker...

SUSE-SU-2026:2001-1 Security update for postgresql16

This update for postgresql16 fixes the following issues Update to version 16.13. Security issues: - CVE-2026-6472: ensure the user has CREATE privilege on the schema specified bsc1265172. - CVE-2026-6473: integer overflows in memory-allocation calculations bsc1265173. - CVE-2026-6474: Guard again...

Security update for postgresql15

This update for postgresql15 fixes the following issues Update to version 15.18. Security issues: CVE-2026-6472: ensure the user has CREATE privilege on the schema specified bsc1265172. CVE-2026-6473: integer overflows in memory-allocation calculations bsc1265173. CVE-2026-6474: Guard against...

Security update for postgresql16

This update for postgresql16 fixes the following issues Update to version 16.13. Security issues: CVE-2026-6472: ensure the user has CREATE privilege on the schema specified bsc1265172. CVE-2026-6473: integer overflows in memory-allocation calculations bsc1265173. CVE-2026-6474: Guard against...

CVE-2026-6477

Use of inherently dangerous function PQfn..., resultisint=0, ... in PostgreSQL libpq loexport, loread, lolseek64, and lotell64 functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response. Like gets, PQfn..., resultisint=0, ... stores arbitrary-lengt...

ALPINE-CVE-2026-6477

Use of inherently dangerous function PQfn..., resultisint=0, ... in PostgreSQL libpq loexport, loread, lolseek64, and lotell64 functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response. Like gets, PQfn..., resultisint=0, ... stores arbitrary-lengt...