{"id":"ALSA-2026:26203","summary":"Important: postgresql:16 security update","details":"PostgreSQL is an advanced object-relational database management system (DBMS).  \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  * postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory (CVE-2026-6477)\n  * postgresql: PostgreSQL: Credential recovery via covert timing channel in MD5 password comparison (CVE-2026-6478)\n  * postgresql: integer overflow can cause an undersized allocation and an out-of-bounds write (CVE-2026-6473)\n\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.\n","modified":"2026-07-02T13:44:30.213166248Z","published":"2026-06-16T00:00:00Z","related":["CVE-2026-6473","CVE-2026-6475","CVE-2026-6477","CVE-2026-6478"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:26203"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-6473"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-6475"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-6477"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-6478"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2477439"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2477442"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2477447"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2477448"},{"type":"ADVISORY","url":"https://errata.almalinux.org/9/ALSA-2026-26203.html"}],"affected":[{"package":{"name":"pg_repack","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/pg_repack"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.1-1.module_el9.6.0+146+c54fdeca"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"pgaudit","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/pgaudit"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.0-1.module_el9.4.0+66+eb9878bc"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"pgvector","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/pgvector"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.2-2.module_el9.6.0+167+4e561146"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"postgis","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/postgis"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.3-5.module_el9.8.0+236+2d3cbd4c"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"postgis-client","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/postgis-client"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.3-5.module_el9.8.0+236+2d3cbd4c"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"postgis-docs","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/postgis-docs"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.3-5.module_el9.8.0+236+2d3cbd4c"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"postgis-upgrade","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/postgis-upgrade"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.3-5.module_el9.8.0+236+2d3cbd4c"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"postgis-utils","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/postgis-utils"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.3-5.module_el9.8.0+236+2d3cbd4c"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"postgres-decoderbufs","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/postgres-decoderbufs"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.0-1.Final.module_el9.4.0+66+eb9878bc"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"postgresql","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/postgresql"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.14-1.module_el9.8.0+266+1e661e97"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"postgresql-contrib","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/postgresql-contrib"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.14-1.module_el9.8.0+266+1e661e97"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:26203.json"}},{"package":{"name":"postgresql-docs","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/postgresql-docs"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.14-1.module_el9.8.0+266+1e661e97"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almal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