RHSA-2026:55447: Important: libXfont2 security update
Published Aug 17, 2026
·Updated
X.Org X11 libXfont2 runtime librarySecurity Fix(es): libxfont2: Font Server Client encoding[] Out-Of-Bounds Read/Write (CVE-2026-59679) libxfonts2: libXfont2: Privilege Escalation via Heap Buffer Overflow in Font Server Client (CVE-2026-44950) 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
1 affected component
X.Org libXfont2
Event History
Aug 17, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Frequently Asked Questions
1
Which security issues are addressed by this update?
The update addresses CVE-2026-59679, an out-of-bounds read/write in Font Server Client encoding handling, and CVE-2026-44950, a heap buffer overflow that can lead to privilege escalation in the Font Server Client.