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Rocky Linux PostgreSQL16 Significant Security Patch RLSA-2026-27743

Important: postgresql16 security update. {"type": "TYPE_SECURITY", "shortCode": "RL", "name": "RLSA-2026:27743", "synopsis": "Important: postgresql16 security update", "severity": "SEVERITY_IMPORTANT", "topic": "An update is available for postgresql16.\nThis update affects Rocky Linux 10.\nA Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list", "description": "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.\n\nSecurity Fix(es):\n\n* postgresql: PostgreSQL: Operating system account hijack via symlink following in pg_basebackup and pg_rewind (CVE-2026-6475)\n\n* postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory (CVE-2026-6477)\n\n* postgresql: PostgreSQL: Credential recovery via covert timing channel in MD5 password comparison (CVE-2026-6478)\n\n* postgresql: integer overflow can cause an undersized allocation and an out-of-bounds write (CVE-2026-6473)\n\nFor 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.", "solution": null, "affectedProducts": ["Rocky Linux 10"], "fixes": [{"ticket": "2477442", "sourceBy": "Red Hat", "sourceLink": "https://bugzilla.redhat.com/show_bug.cgi?id=2477442", "description": ""}, {"ticket": "2477447", "sourceBy": "Red Hat", "sourceLink": "https://bugzilla.redhat.com/show_bug.cgi?id=2477447", "description": ""}, {"ticket": "2477448", "sourceBy": "Red Hat", "sourceLink":"https://bugzilla.redhat.com/show_bug.cgi?id=2477448", "description": ""}, {"ticket": "2477439", "sourceBy": "Red Hat", "sourceLink": "https://bugzilla.redhat.com/show_bug.cgi?id=2477439", "description": ""}], "cves": [{"name": "CVE-2026-6473", "sourceBy": "MITRE", "sourceLink": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-6473", "cvss3ScoringVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "cvss3BaseScore": "8.8", "cwe": "CWE-190"}, {"name": "CVE-2026-6475", "sourceBy": "MITRE", "sourceLink": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-6475", "cvss3ScoringVector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "cvss3BaseScore": "6.7", "cwe": "CWE-59"}, {"name": "CVE-2026-6477", "sourceBy": "MITRE", "sourceLink": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-6477", "cvss3ScoringVector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H", "cvss3BaseScore": "8.4", "cwe": "CWE-120"}, {"name": "CVE-2026-6478", "sourceBy": "MITRE", "sourceLink": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-6478", "cvss3ScoringVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N", "cvss3BaseScore": "8.2", "cwe": "CWE-385"}], "references": [], "publishedAt": "2026-06-24T12:05:09.232192Z", "rpms": {"Rocky Linux 10": {"nvras": ["postgresql-test-rpm-macros-0:16.14-1.el10_2.noarch.rpm", "postgresql-plpython3-debuginfo-0:16.14-1.el10_2.aarch64.rpm", "postgresql-pltcl-0:16.14-1.el10_2.x86_64.rpm", "postgresql-upgrade-0:16.14-1.el10_2.s390x.rpm", "postgresql16-0:16.14-1.el10_2.src.rpm", "postgresql-server-0:16.14-1.el10_2.x86_64.rpm", "postgresql-docs-debuginfo-0:16.14-1.el10_2.ppc64le.rpm", "postgresql-contrib-0:16.14-1.el10_2.x86_64.rpm", "postgresql-plperl-0:16.14-1.el10_2.aarch64.rpm", "postgresql16-debuginfo-0:16.14-1.el10_2.aarch64.rpm", 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Important PostgreSQL security update for Rocky Linux addressing multiple vulnerabilities including account hijack and buffer overflow issues.. Rocky Linux updates, PostgreSQL security, important advisory, database vulnerabilities. . Severity: Important. LinuxSecurity.com Team

Jun 24, 2026 •Important Rocky Linux