Red Hat Security Advisory: glib2 security update
Two vulnerabilities in GLib, a core library used in GNOME and other C applications, have been identified and addressed by Red Hat. The first is a buffer underflow in the GVariant parser that can lead to heap corruption (CVE-2025-14087). The second is an integer overflow in GLib GIO attribute escaping that causes a heap buffer overflow (CVE-2025-14512). These issues affect multiple Red Hat Enterprise Linux 9. 6 Extended Update Support variants and related products. Red Hat has released security updates to fix these vulnerabilities. The overall security impact is rated as moderate. No known exploits in the wild have been reported. Users of affected Red Hat products should apply the available updates to remediate these issues.
AI Analysis
Technical Summary
GLib, a foundational library for C applications and GNOME, contained two security flaws: a buffer underflow in the GVariant parser (CVE-2025-14087) leading to heap corruption, and an integer overflow in GIO attribute escaping (CVE-2025-14512) causing a heap buffer overflow. These vulnerabilities could potentially compromise memory integrity in affected applications. Red Hat has issued a security advisory (RHSA-2026:19457) and provided updated glib2 packages for Red Hat Enterprise Linux 9.6 Extended Update Support and related variants to address these issues. The vulnerabilities are rated with moderate severity by Red Hat. No CVSS scores are provided in the advisory. No exploits are currently known in the wild.
Potential Impact
The vulnerabilities can lead to heap corruption and heap buffer overflow, which may cause application crashes or potentially allow attackers to execute arbitrary code or cause denial of service. The impact is rated as moderate by Red Hat. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Red Hat has released updated glib2 packages that fix these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.6 Extended Update Support and related products should apply these official security updates promptly. Detailed update instructions are available in the Red Hat advisory and knowledge base article https://access.redhat.com/articles/11258. Since this is an on-premises product, remediation requires manual patching by system administrators. No alternative mitigations or workarounds are indicated in the advisory.
Red Hat Security Advisory: glib2 security update
Description
Two vulnerabilities in GLib, a core library used in GNOME and other C applications, have been identified and addressed by Red Hat. The first is a buffer underflow in the GVariant parser that can lead to heap corruption (CVE-2025-14087). The second is an integer overflow in GLib GIO attribute escaping that causes a heap buffer overflow (CVE-2025-14512). These issues affect multiple Red Hat Enterprise Linux 9. 6 Extended Update Support variants and related products. Red Hat has released security updates to fix these vulnerabilities. The overall security impact is rated as moderate. No known exploits in the wild have been reported. Users of affected Red Hat products should apply the available updates to remediate these issues.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
GLib, a foundational library for C applications and GNOME, contained two security flaws: a buffer underflow in the GVariant parser (CVE-2025-14087) leading to heap corruption, and an integer overflow in GIO attribute escaping (CVE-2025-14512) causing a heap buffer overflow. These vulnerabilities could potentially compromise memory integrity in affected applications. Red Hat has issued a security advisory (RHSA-2026:19457) and provided updated glib2 packages for Red Hat Enterprise Linux 9.6 Extended Update Support and related variants to address these issues. The vulnerabilities are rated with moderate severity by Red Hat. No CVSS scores are provided in the advisory. No exploits are currently known in the wild.
Potential Impact
The vulnerabilities can lead to heap corruption and heap buffer overflow, which may cause application crashes or potentially allow attackers to execute arbitrary code or cause denial of service. The impact is rated as moderate by Red Hat. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Red Hat has released updated glib2 packages that fix these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.6 Extended Update Support and related products should apply these official security updates promptly. Detailed update instructions are available in the Red Hat advisory and knowledge base article https://access.redhat.com/articles/11258. Since this is an on-premises product, remediation requires manual patching by system administrators. No alternative mitigations or workarounds are indicated in the advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:19457
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-14512"]
- Cvss Version
- null
Threat ID: 6a16097de29bf47b50649ddd
Added to database: 5/26/2026, 8:58:37 PM
Last enriched: 5/26/2026, 10:50:10 PM
Last updated: 5/27/2026, 4:56:07 AM
Views: 2
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.