Red Hat Security Advisory: postgresql:12 security update
A denial of service vulnerability exists in PostgreSQL 12 due to uncontrolled recursion during SSL/GSS negotiation (CVE-2026-6479). This issue can cause the database server to become unresponsive. Red Hat has issued a security update for the postgresql:12 module in Red Hat Enterprise Linux 8 to address this vulnerability.
AI Analysis
Technical Summary
CVE-2026-6479 is a denial of service vulnerability in PostgreSQL 12 caused by uncontrolled recursion in the SSL/GSS negotiation process. This flaw can lead to resource exhaustion, resulting in a denial of service condition. Red Hat Product Security released an advisory (RHSA-2026:52396) providing an update for the postgresql:12 module on Red Hat Enterprise Linux 8 to fix this issue. The advisory rates the security impact as Important (high severity) and references the CVE for further details. The update is available for multiple architectures including x86_64, s390x, ppc64le, and aarch64. No CVSS score is provided in the advisory.
Potential Impact
The vulnerability allows an attacker to cause a denial of service by triggering uncontrolled recursion during SSL/GSS negotiation in PostgreSQL 12. This can make the database server unavailable, impacting availability of services relying on the database.
Mitigation Recommendations
Red Hat has released an official security update for the postgresql:12 module in Red Hat Enterprise Linux 8 that addresses this vulnerability. Users should apply the update as described in the Red Hat advisory RHSA-2026:52396 and the referenced article https://access.redhat.com/articles/11258 to remediate the issue. No additional mitigations are specified or required beyond applying the official patch.
Red Hat Security Advisory: postgresql:12 security update
Description
A denial of service vulnerability exists in PostgreSQL 12 due to uncontrolled recursion during SSL/GSS negotiation (CVE-2026-6479). This issue can cause the database server to become unresponsive. Red Hat has issued a security update for the postgresql:12 module in Red Hat Enterprise Linux 8 to address this vulnerability.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6479 is a denial of service vulnerability in PostgreSQL 12 caused by uncontrolled recursion in the SSL/GSS negotiation process. This flaw can lead to resource exhaustion, resulting in a denial of service condition. Red Hat Product Security released an advisory (RHSA-2026:52396) providing an update for the postgresql:12 module on Red Hat Enterprise Linux 8 to fix this issue. The advisory rates the security impact as Important (high severity) and references the CVE for further details. The update is available for multiple architectures including x86_64, s390x, ppc64le, and aarch64. No CVSS score is provided in the advisory.
Potential Impact
The vulnerability allows an attacker to cause a denial of service by triggering uncontrolled recursion during SSL/GSS negotiation in PostgreSQL 12. This can make the database server unavailable, impacting availability of services relying on the database.
Mitigation Recommendations
Red Hat has released an official security update for the postgresql:12 module in Red Hat Enterprise Linux 8 that addresses this vulnerability. Users should apply the update as described in the Red Hat advisory RHSA-2026:52396 and the referenced article https://access.redhat.com/articles/11258 to remediate the issue. No additional mitigations are specified or required beyond applying the official patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:52396
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a79f0efbf8831d539f63c05
Added to database: 08/10/2026, 15:40:31 UTC
Last enriched: 08/10/2026, 16:07:30 UTC
Last updated: 08/10/2026, 17:22:31 UTC
Views: 5
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