Red Hat Security Advisory: libpq security update
The libpq package provides the PostgreSQL client library, which allows client programs to connect to PostgreSQL servers. Security Fix(es): * postgresql: libpq undersizes allocations, via integer wraparound (CVE-2025-12818) 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.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2025-12818 in the libpq PostgreSQL client library involves undersized memory allocations caused by an integer wraparound. This flaw could potentially lead to memory corruption issues when client programs connect to PostgreSQL servers using libpq. Red Hat has released updated libpq packages for Red Hat Enterprise Linux 10.0 Extended Update Support across multiple hardware architectures to fix this issue. The advisory rates the security impact as moderate and provides links to updated packages and instructions for applying the update. No CVSS score is provided in the advisory. No exploits are currently known to be in the wild.
Potential Impact
The vulnerability may cause libpq to allocate less memory than required due to integer wraparound, potentially leading to memory corruption. This could affect the stability or security of client applications using libpq to connect to PostgreSQL servers. The advisory rates the impact as moderate. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Red Hat has released updated libpq packages for Red Hat Enterprise Linux 10.0 Extended Update Support to address this vulnerability. Users should apply these official updates as described in the Red Hat advisory (RHSA-2026:0865) and the referenced article (https://access.redhat.com/articles/11258). No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: libpq security update
Description
The libpq package provides the PostgreSQL client library, which allows client programs to connect to PostgreSQL servers. Security Fix(es): * postgresql: libpq undersizes allocations, via integer wraparound (CVE-2025-12818) 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
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2025-12818 in the libpq PostgreSQL client library involves undersized memory allocations caused by an integer wraparound. This flaw could potentially lead to memory corruption issues when client programs connect to PostgreSQL servers using libpq. Red Hat has released updated libpq packages for Red Hat Enterprise Linux 10.0 Extended Update Support across multiple hardware architectures to fix this issue. The advisory rates the security impact as moderate and provides links to updated packages and instructions for applying the update. No CVSS score is provided in the advisory. No exploits are currently known to be in the wild.
Potential Impact
The vulnerability may cause libpq to allocate less memory than required due to integer wraparound, potentially leading to memory corruption. This could affect the stability or security of client applications using libpq to connect to PostgreSQL servers. The advisory rates the impact as moderate. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Red Hat has released updated libpq packages for Red Hat Enterprise Linux 10.0 Extended Update Support to address this vulnerability. Users should apply these official updates as described in the Red Hat advisory (RHSA-2026:0865) and the referenced article (https://access.redhat.com/articles/11258). No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:0865
- Cve Count
- 1
Threat ID: 6a3da1ca4853345fc1821f93
Added to database: 06/25/2026, 21:46:50 UTC
Last enriched: 06/25/2026, 22:02:07 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 24
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.