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Red Hat Security Advisory

RHSA-2026:29815

postgresql:12 security update

Released 2026-06-25 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 5 records

Priority MEDIUM 42

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds.

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.01006 Published 2026-05-14 Partial fix · 18.4, 17.10 +3 CWE-190
Priority MEDIUM 40

Stack buffer overflow in PostgreSQL module "refint" allows an unprivileged database user to execute arbitrary code as the operating system user running the database.

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.0037 Published 2026-05-14 Partial fix · 18.4, 17.10 +3 CWE-121
Priority MEDIUM 40

Use of inherently dangerous function PQfn(..., result_is_int=0, ...) in PostgreSQL libpq lo_export(), lo_read(), lo_lseek64(), and lo_tell64() functions allows the server superuser to overwrite a client stack buffer with…

CVSS 3.1HIGH 8.8 Network No auth User interaction EPSS 0.00454 Published 2026-05-14 Partial fix · 18.4, 17.10 +3 CWE-242
Priority LOW 36

Covert timing channel in comparison of MD5-hashed password in PostgreSQL authentication allows an attacker to recover user credentials sufficient to authenticate.

CVSS 3.1MEDIUM 6.5 Network No auth No interaction EPSS 0.00558 Published 2026-05-14 Partial fix · 18.4, 17.10 +3 CWE-385