RHSA-2026:51063: Important: libXfont2 security update
Important: libXfont2 security update
Other sources
X.Org X11 libXfont2 runtime librarySecurity Fix(es): libXfont2: BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow (CVE-2026-56001) libXfont2: PCF Font Parsing Heap Buffer Overflow (CVE-2026-56002) libXfont2: computeProps Property Buffer Heap Buffer Overflow (CVE-2026-56003) 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.
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
libXfont2to a version that resolves this vulnerability.Patch CVE-2026-56001 - Upgrade
Upgrade
libXfont2to a version that resolves this vulnerability.Patch CVE-2026-56002 - Upgrade
Upgrade
libXfont2to a version that resolves this vulnerability.Patch CVE-2026-56003
Event History
Frequently Asked Questions
What is the severity of RHSA-2026:51063?
The severity of RHSA-2026:51063 is rated as high (7).
What vulnerabilities does RHSA-2026:51063 address?
RHSA-2026:51063 addresses security vulnerabilities in libXfont2.
How do I fix RHSA-2026:51063?
To fix RHSA-2026:51063, install the updated libXfont2 packages provided by Red Hat.
Which systems are affected by RHSA-2026:51063?
RHSA-2026:51063 affects various versions of Red Hat Enterprise Linux Server, including Extended Life Cycle Support for IBM z Systems and IBM Power.
When was RHSA-2026:51063 published?
RHSA-2026:51063 was published on August 6, 2026.