CVE-2026-93543

EUVD-2026-86121
An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
suseCNA
7.4 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 18.1%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
x.orglibxi
𝑥
< 1.8.4
CNA
Debian logo
Debian Releases
Debian Product
Codename
libxi
bookworm
postponed
forky
2:1.8.4-1
fixed
sid
2:1.8.4-1
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libxi
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
stonking
needs-triage
xenial
needs-triage
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
libXi
RHEL 8
0:1.7.10-2.el8_10
fixed
RHEL 9
0:1.7.10-8.el9_8.1
fixed
libXi-devel
RHEL 8
0:1.7.10-2.el8_10
fixed
RHEL 9
0:1.7.10-8.el9_8.1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
libXi
Amazon Linux 2023
0:1.8.4-1.amzn2023.0.1
fixed
libXi-debuginfo
Amazon Linux 2023
0:1.8.4-1.amzn2023.0.1
fixed
libXi-debugsource
Amazon Linux 2023
0:1.8.4-1.amzn2023.0.1
fixed
libXi-devel
Amazon Linux 2023
0:1.8.4-1.amzn2023.0.1
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
libXi
Azure Linux 3.0
0:1.8.4-1.azl3
fixed
Common Weakness Enumeration
References
https://gitlab.freedesktop.org/xorg/lib/libxi/-/merge_requests/23/diffs?commit_id=e2089ab748828273f916bbffd4e65b506aa50fdc