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›vulnerability›CVE-2026-56003
Name
CVE-2026-56003
Source
NVD ( link)Debian ( link)
Description
A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.
Published Date
Updated Date
Workaround
-

Analysis#


Vulnerability Ratings#


8.5
CVSSv31
8.8
CVSSv31
NaN
other

Others affected components#


Name
Project
Project Version
Version
Status
buildroot
2025.02.x
2.0.9
Not Affected
buildroot
master
2.0.9
Not Affected
yocto
kirkstone
1.5.4
Not Affected
yocto
kirkstone
2.0.5
Exploitable
yocto
master
2.0.9
Not Affected

Resolved with patches#


libxfont (yocto:scarthgap)

#
Title
Author
Resolve
1
bitscale: add bounds check to computeProps for property
Peter Hutterer <peter.hutterer@who-t.net>
CVE-2026-56003

libxfont2 (yocto:scarthgap)

#
Title
Author
Resolve
1
bitscale: add bounds check to computeProps for property
Peter Hutterer <peter.hutterer@who-t.net>
CVE-2026-56003