CVE-2026-94286

NameCVE-2026-94286
DescriptionAn out-of-bounds read in libXtst's RECORD reply parser in libXtst before 1.2.6 could be used by malicious X servers to crash attached X clients.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1149667

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libxtst (PTS)bookworm2:1.2.3-1.1vulnerable
forky, sid, trixie2:1.2.5-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libxtstsource(unstable)(unfixed)1149667

Notes

[trixie] - libxtst <no-dsa> (Minor issue)
[bookworm] - libxtst <postponed> (Minor issue)
https://gitlab.freedesktop.org/xorg/lib/libxtst/-/merge_requests/10
Fixed by: https://gitlab.freedesktop.org/xorg/lib/libxtst/-/commit/b84737d8400db7f06293822838d0e1c374cf71c4

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