RLSA-2026:97875: Important: postgresql:16 security update

Q: What attacker access is indicated by the severity vector?

The vector indicates network-reachable exploitation with low privileges required and no user interaction required. It also indicates high potential impact to confidentiality, integrity, and availability.

Q: Which vulnerable functionality is specifically identified?

The advisory identifies malformed FlatGeobuf buffer handling in PostGIS, which can disclose memory or cause denial of service. It also identifies an out-of-bounds write during pgvector IVFFlat index builds that can lead to arbitrary code execution.

Q: Which Rocky Linux package areas should be included in an exposure review?

The listed software includes pgaudit, pg_repack, postgres-decoderbufs, postgis, and postgresql. The available data does not provide affected or fixed package versions, so package inventory alone cannot determine patch status.

Published Nov 11, 2026

Updated

PostgreSQL is an advanced object-relational database management system (DBMS).

Security Fix(es):

postgis: PostGIS: Memory Disclosure and Denial of Service via Malformed FlatGeobuf Buffer (CVE-2026-73515)

pgvector: pgvector: Arbitrary code execution via out-of-bounds write during IVFFlat index build (CVE-2026-103484)

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.

Affected Software

8 affected componentsFixes available

rocky-linux/pgaudit<0:16.0-1.module+el9.8.0+40212+d6f50005

0:16.0-1.module+el9.8.0+40212+d6f50005

rocky-linux/pgaudit<0:16.0-1.module+el9.8.0+40159+adcaa225

0:16.0-1.module+el9.8.0+40159+adcaa225

rocky-linux/pg_repack<0:1.5.1-1.module+el9.8.0+40212+d6f50005

0:1.5.1-1.module+el9.8.0+40212+d6f50005

rocky-linux/pg_repack<0:1.5.1-1.module+el9.8.0+40159+adcaa225

0:1.5.1-1.module+el9.8.0+40159+adcaa225

rocky-linux/postgis<0:3.5.3-6.module+el9.8.0+40320+f6f9ed3c

0:3.5.3-6.module+el9.8.0+40320+f6f9ed3c

rocky-linux/postgres-decoderbufs<0:2.4.0-1.Final.module+el9.8.0+40212+d6f50005

0:2.4.0-1.Final.module+el9.8.0+40212+d6f50005

rocky-linux/postgres-decoderbufs<0:2.4.0-1.Final.module+el9.8.0+40159+adcaa225

0:2.4.0-1.Final.module+el9.8.0+40159+adcaa225

rocky-linux/postgresql<0:16.15-1.module+el9.8.0+40320+f6f9ed3c

0:16.15-1.module+el9.8.0+40320+f6f9ed3c

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade rocky-linux/pgaudit to a version that resolves this vulnerability.
Fixed in 0:16.0-1.module+el9.8.0+40212+d6f50005
Upgrade
Upgrade rocky-linux/pgaudit to a version that resolves this vulnerability.
Fixed in 0:16.0-1.module+el9.8.0+40159+adcaa225
Upgrade
Upgrade rocky-linux/pg_repack to a version that resolves this vulnerability.
Fixed in 0:1.5.1-1.module+el9.8.0+40212+d6f50005
Upgrade
Upgrade rocky-linux/pg_repack to a version that resolves this vulnerability.
Fixed in 0:1.5.1-1.module+el9.8.0+40159+adcaa225
Upgrade
Upgrade rocky-linux/postgis to a version that resolves this vulnerability.
Fixed in 0:3.5.3-6.module+el9.8.0+40320+f6f9ed3c
Upgrade
Upgrade rocky-linux/postgres-decoderbufs to a version that resolves this vulnerability.
Fixed in 0:2.4.0-1.Final.module+el9.8.0+40212+d6f50005
Upgrade
Upgrade rocky-linux/postgres-decoderbufs to a version that resolves this vulnerability.
Fixed in 0:2.4.0-1.Final.module+el9.8.0+40159+adcaa225
Upgrade
Upgrade rocky-linux/postgresql to a version that resolves this vulnerability.
Fixed in 0:16.15-1.module+el9.8.0+40320+f6f9ed3c

Event History

Nov 11, 2026

Advisory Published

via OSV·12:04 AM

Data Sourced

via OSV·12:04 AM

DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

What attacker access is indicated by the severity vector?

The vector indicates network-reachable exploitation with low privileges required and no user interaction required. It also indicates high potential impact to confidentiality, integrity, and availability.

Which vulnerable functionality is specifically identified?

The advisory identifies malformed FlatGeobuf buffer handling in PostGIS, which can disclose memory or cause denial of service. It also identifies an out-of-bounds write during pgvector IVFFlat index builds that can lead to arbitrary code execution.

Which Rocky Linux package areas should be included in an exposure review?

The listed software includes pgaudit, pg_repack, postgres-decoderbufs, postgis, and postgresql. The available data does not provide affected or fixed package versions, so package inventory alone cannot determine patch status.

RLSA-2026:97875: Important: postgresql:16 security update

Affected Software

Remediation

Event History

Child vulnerabilities

Frequently Asked Questions

What attacker access is indicated by the severity vector?

Which vulnerable functionality is specifically identified?

Which Rocky Linux package areas should be included in an exposure review?

Company

Resources

Contact

Frequently Asked Questions

What attacker access is indicated by the severity vector?

Which vulnerable functionality is specifically identified?

Which Rocky Linux package areas should be included in an exposure review?