Debian dsa-6388 : libxfont-dev - security update

high Nessus Plugin ID 326977

Language:

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6388 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6388-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso July 15, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : libxfont CVE ID : CVE-2026-56001 CVE-2026-56002 CVE-2026-56003 Debian Bug : 1141702

Several vulnerabilities were discovered in libXfont, the X11 font rasterisation library, which may result in arbitrary code execution in the X server context for authenticated X clients.

For the stable distribution (trixie), these problems have been fixed in version 1:2.0.6-1+deb13u1.

We recommend that you upgrade your libxfont packages.

For the detailed security status of libxfont please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/libxfont

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the libxfont-dev packages.

Plugin Details

Severity: High

ID: 326977

File Name: debian_DSA-6388.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 7/15/2026

Updated: 7/15/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.1

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-56003

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libxfont2, p-cpe:/a:debian:debian_linux:libxfont2-udeb, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:libxfont-dev

Required KB Items: Host/Debian/dpkg-l, Host/local_checks_enabled, Host/Debian/release

Exploit Ease: No known exploits are available

Patch Publication Date: 7/15/2026

Vulnerability Publication Date: 7/8/2026

Reference Information

CVE: CVE-2026-56001, CVE-2026-56002, CVE-2026-56003

Detections

Analytics