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 8. These include an out-of-bounds read/write in the Font Server Client encoding and a privilege escalation via a heap buffer overflow in the Font Server Client. Red Hat has issued a security advisory with updates to address these issues. The vulnerabilities are rated with an important security impact by Red Hat Product Security. Updated packages are available for multiple architectures and variants of Red Hat Enterprise Linux 8.
AI Analysis
Technical Summary
The X.Org X11 libXfont2 runtime library contains two security flaws: CVE-2026-59679, an out-of-bounds read/write 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 affect Red Hat Enterprise Linux 8 and related CodeReady Linux Builder packages across various architectures. Red Hat has released updated libXfont2 packages to remediate these issues as detailed in advisory RHSA-2026:55446.
Potential Impact
Successful exploitation of these vulnerabilities could allow an attacker to cause out-of-bounds memory access and potentially escalate privileges on affected systems. Red Hat rates the security impact as Important, indicating a high severity level that could compromise system security if unpatched.
Mitigation Recommendations
Red Hat has released updated libXfont2 packages that fix these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:55446 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are required beyond applying the official patches.
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 8. These include an out-of-bounds read/write in the Font Server Client encoding and a privilege escalation via a heap buffer overflow in the Font Server Client. Red Hat has issued a security advisory with updates to address these issues. The vulnerabilities are rated with an important security impact by Red Hat Product Security. Updated packages are available for multiple architectures and variants of Red Hat Enterprise Linux 8.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The X.Org X11 libXfont2 runtime library contains two security flaws: CVE-2026-59679, an out-of-bounds read/write 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 affect Red Hat Enterprise Linux 8 and related CodeReady Linux Builder packages across various architectures. Red Hat has released updated libXfont2 packages to remediate these issues as detailed in advisory RHSA-2026:55446.
Potential Impact
Successful exploitation of these vulnerabilities could allow an attacker to cause out-of-bounds memory access and potentially escalate privileges on affected systems. Red Hat rates the security impact as Important, indicating a high severity level that could compromise system security if unpatched.
Mitigation Recommendations
Red Hat has released updated libXfont2 packages that fix these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:55446 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are required beyond applying the official patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:55446
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-59679"]
Threat ID: 6a83336dbf8831d5392a7e48
Added to database: 08/17/2026, 16:14:37 UTC
Last enriched: 09/25/2026, 05:10:52 UTC
Last updated: 10/02/2026, 10:37:15 UTC
Views: 81
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