RHSA-2026:51066: 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-2026:51066?
The severity of RHSA-2026:51066 is rated as high with a score of 7.
What vulnerabilities are addressed in RHSA-2026:51066?
RHSA-2026:51066 addresses two vulnerabilities: an integer overflow in BitmapScaleBitmaps (CVE-2026-56001) and a heap buffer overflow in PCF Font Parsing (CVE-2026-56002).
How do I fix RHSA-2026:51066?
To fix RHSA-2026:51066, you should apply the latest security update provided by Red Hat for libXfont2.
Who is affected by RHSA-2026:51066?
RHSA-2026:51066 affects users of Red Hat Enterprise Linux for x86_64, specifically those utilizing the libXfont2 library.
What are the potential risks of not addressing RHSA-2026:51066?
Failing to address RHSA-2026:51066 could expose systems to exploits that leverage integer and heap buffer overflows, potentially leading to unauthorized access or system compromise.