Red Hat Security Advisory: libXfont2 security update
Two security vulnerabilities have been identified in the X.Org X11 libXfont2 runtime library affecting Red Hat Enterprise Linux 10. These include an out-of-bounds read/write in the Font Server Client encoding (CVE-2026-59679) and a privilege escalation via a heap buffer overflow in the Font Server Client (CVE-2026-44950). Red Hat has issued an important security update to address these issues. The vulnerabilities could allow an attacker to escalate privileges on affected systems. Updated libXfont2 packages are available for multiple Red Hat Enterprise Linux 10 variants and architectures.
AI Analysis
Technical Summary
The libXfont2 runtime library used in X.Org X11 contains two security flaws: CVE-2026-59679, an out-of-bounds read/write vulnerability in the Font Server Client encoding, and CVE-2026-44950, a privilege escalation vulnerability caused by a heap buffer overflow in the Font Server Client. These vulnerabilities could potentially allow an attacker to escalate privileges on affected systems. Red Hat has issued an important security advisory (RHSA-2026:55448) providing updated libXfont2 packages for Red Hat Enterprise Linux 10 and related variants to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities could allow an attacker to perform out-of-bounds memory operations and escalate privileges on affected Red Hat Enterprise Linux 10 systems. This could compromise system integrity and security.
Mitigation Recommendations
Red Hat has released updated libXfont2 packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 10 and related distributions should apply the security updates as described in Red Hat advisory RHSA-2026:55448. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: libXfont2 security update
Description
Two security vulnerabilities have been identified in the X.Org X11 libXfont2 runtime library affecting Red Hat Enterprise Linux 10. These include an out-of-bounds read/write in the Font Server Client encoding (CVE-2026-59679) and a privilege escalation via a heap buffer overflow in the Font Server Client (CVE-2026-44950). Red Hat has issued an important security update to address these issues. The vulnerabilities could allow an attacker to escalate privileges on affected systems. Updated libXfont2 packages are available for multiple Red Hat Enterprise Linux 10 variants and architectures.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libXfont2 runtime library used in X.Org X11 contains two security flaws: CVE-2026-59679, an out-of-bounds read/write vulnerability in the Font Server Client encoding, and CVE-2026-44950, a privilege escalation vulnerability caused by a heap buffer overflow in the Font Server Client. These vulnerabilities could potentially allow an attacker to escalate privileges on affected systems. Red Hat has issued an important security advisory (RHSA-2026:55448) providing updated libXfont2 packages for Red Hat Enterprise Linux 10 and related variants to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities could allow an attacker to perform out-of-bounds memory operations and escalate privileges on affected Red Hat Enterprise Linux 10 systems. This could compromise system integrity and security.
Mitigation Recommendations
Red Hat has released updated libXfont2 packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 10 and related distributions should apply the security updates as described in Red Hat advisory RHSA-2026:55448. For detailed update instructions, refer to 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-2026:55448
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-59679"]
- Cvss Version
- null
Threat ID: 6a83336dbf8831d5392a7e41
Added to database: 08/17/2026, 16:14:37 UTC
Last enriched: 08/17/2026, 16:35:17 UTC
Last updated: 08/18/2026, 02:41:00 UTC
Views: 6
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