RHSA-2026:98504 - Security Advisory

Topic

An update for libXi is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

X.Org X11 libXi runtime library

Security Fix(es):

• libXi: libXi: Denial of Service via out-of-bounds read in XI2 class parser (CVE-2026-93543)
• libXi: libXi: Arbitrary code execution via oversized DEVICE_ENABLE reply (CVE-2026-109090)
• libXi: libXi: Arbitrary code execution via DEVICE_RESOLUTION heap-based buffer overflow (CVE-2026-109089)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64

Fixes

• BZ - 2540529 - CVE-2026-93543 libXi: libXi: Denial of Service via out-of-bounds read in XI2 class parser
• BZ - 2562069 - CVE-2026-109090 libXi: libXi: Arbitrary code execution via oversized DEVICE_ENABLE reply
• BZ - 2562191 - CVE-2026-109089 libXi: libXi: Arbitrary code execution via DEVICE_RESOLUTION heap-based buffer overflow

CVEs

• CVE-2026-93543
• CVE-2026-109089
• CVE-2026-109090

References

• https://access.redhat.com/security/updates/classification/#important