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RLSA-2026:55447

Security Mirrored from RHSA-2026:55447
Issued at: 2026-08-17
Updated at: 2026-08-18

Advisory content derived from Red Hat RHSA-2026:55447, © Red Hat, Inc., used under CC BY 4.0, with modifications.

Synopsis

Important: libXfont2 security update



Description

X.Org X11 libXfont2 runtime library

Security 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 products

Rocky Linux 9 aarch64 Rocky Linux 9 ppc64le Rocky Linux 9 s390x Rocky Linux 9 x86_64

Fixes

2509620 2509622

CVEs

CVE-2026-44950 CVE-2026-59679

Affected packages

Rocky Linux 9 aarch64 - AppStream

libXfont2-0:2.0.3-12.el9_8.3.aarch64.rpm libXfont2-0:2.0.3-12.el9_8.3.src.rpm libXfont2-debuginfo-0:2.0.3-12.el9_8.3.aarch64.rpm libXfont2-debugsource-0:2.0.3-12.el9_8.3.aarch64.rpm

Rocky Linux 9 x86_64 - AppStream

libXfont2-0:2.0.3-12.el9_8.3.i686.rpm libXfont2-0:2.0.3-12.el9_8.3.src.rpm libXfont2-0:2.0.3-12.el9_8.3.x86_64.rpm libXfont2-debuginfo-0:2.0.3-12.el9_8.3.i686.rpm libXfont2-debuginfo-0:2.0.3-12.el9_8.3.x86_64.rpm libXfont2-debugsource-0:2.0.3-12.el9_8.3.i686.rpm libXfont2-debugsource-0:2.0.3-12.el9_8.3.x86_64.rpm

Rocky Linux 9 ppc64le - AppStream

libXfont2-0:2.0.3-12.el9_8.3.ppc64le.rpm libXfont2-0:2.0.3-12.el9_8.3.src.rpm libXfont2-debuginfo-0:2.0.3-12.el9_8.3.ppc64le.rpm libXfont2-debugsource-0:2.0.3-12.el9_8.3.ppc64le.rpm

Rocky Linux 9 s390x - AppStream

libXfont2-0:2.0.3-12.el9_8.3.s390x.rpm libXfont2-0:2.0.3-12.el9_8.3.src.rpm libXfont2-debuginfo-0:2.0.3-12.el9_8.3.s390x.rpm libXfont2-debugsource-0:2.0.3-12.el9_8.3.s390x.rpm

Rocky Linux 9 aarch64 - CRB

libXfont2-devel-0:2.0.3-12.el9_8.3.aarch64.rpm

Rocky Linux 9 x86_64 - CRB

libXfont2-devel-0:2.0.3-12.el9_8.3.i686.rpm libXfont2-devel-0:2.0.3-12.el9_8.3.x86_64.rpm

Rocky Linux 9 ppc64le - CRB

libXfont2-devel-0:2.0.3-12.el9_8.3.ppc64le.rpm

Rocky Linux 9 s390x - CRB

libXfont2-devel-0:2.0.3-12.el9_8.3.s390x.rpm