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Fencer Intel
medium 5.0

CVE-2013-6424 json

Integer underflow in the xTrapezoidValid macro in render/picture.h in X.Org allows context-dependent attackers to cause a denial of service…

published 12y ago modified 4mo ago also EUVD-2013-6236

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

Integer underflow in the xTrapezoidValid macro in render/picture.h in X.Org allows context-dependent attackers to cause a denial of service (crash) via a negative bottom value.

Patch / fix

  • pixman pixman 0.31.2
  • xorg-server Debian 14, Debian 13, Debian 12 2:1.14.2.901-1

debian advisories DEBIAN-CVE-2013-6424

  • xorg-x11-server RHEL 5 1.1.1-48.101.el5_10.2
  • xorg-x11-server RHEL 6 1.13.0-23.1.el6_5
  • xorg-x11-server-sdk RHEL 5 1.1.1-48.101.el5_10.2
  • xorg-x11-server-Xdmx RHEL 5 1.1.1-48.101.el5_10.2
  • xorg-x11-server-Xdmx RHEL 6 1.13.0-23.1.el6_5
  • xorg-x11-server-Xorg RHEL 5 1.1.1-48.101.el5_10.2
  • xorg-x11-server-Xorg RHEL 6 1.13.0-23.1.el6_5
  • xorg-x11-server-Xvfb RHEL 5 1.1.1-48.101.el5_10.2

red hat advisories RHSA-2013:1868

Is CVE-2013-6424 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-6424 updated cvss 7.4

xorg-x11-server: integer underflow when handling trapezoids

  • Red Hat Enterprise Linux (v. 5 server) xorg-x11-server 1.1.1-48.101.el5_10.2, xorg-x11-server-sdk 1.1.1-48.101.el5_10.2, xorg-x11-server-Xdmx 1.1.1-48.101.el5_10.2, xorg-x11-server-Xorg 1.1.1-48.101.el5_10.2, xorg-x11-server-Xvfb 1.1.1-48.101.el5_10.2, xorg-x11-server-Xnest 1.1.1-48.101.el5_10.2, +2 more Red Hat Enterprise Linux Desktop (v. 5 client) xorg-x11-server 1.1.1-48.101.el5_10.2, xorg-x11-server-Xdmx 1.1.1-48.101.el5_10.2, xorg-x11-server-Xorg 1.1.1-48.101.el5_10.2, xorg-x11-server-Xvfb 1.1.1-48.101.el5_10.2, xorg-x11-server-Xnest 1.1.1-48.101.el5_10.2, xorg-x11-server-Xephyr 1.1.1-48.101.el5_10.2, +1 more Red Hat Enterprise Linux Desktop (v. 6) xorg-x11-server 1.13.0-23.1.el6_5, xorg-x11-server-Xorg 1.13.0-23.1.el6_5, xorg-x11-server-common 1.13.0-23.1.el6_5, xorg-x11-server-Xephyr 1.13.0-23.1.el6_5 Red Hat Enterprise Linux Desktop Optional (v. 6) xorg-x11-server 1.13.0-23.1.el6_5, xorg-x11-server-Xdmx 1.13.0-23.1.el6_5, xorg-x11-server-Xvfb 1.13.0-23.1.el6_5, xorg-x11-server-Xnest 1.13.0-23.1.el6_5, xorg-x11-server-source 1.13.0-23.1.el6_5 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) xorg-x11-server 1.1.1-48.101.el5_10.2, xorg-x11-server-sdk 1.1.1-48.101.el5_10.2 Red Hat Enterprise Linux HPC Node Optional (v. 6) xorg-x11-server 1.13.0-23.1.el6_5, xorg-x11-server-Xdmx 1.13.0-23.1.el6_5, xorg-x11-server-Xorg 1.13.0-23.1.el6_5, xorg-x11-server-Xvfb 1.13.0-23.1.el6_5, xorg-x11-server-Xnest 1.13.0-23.1.el6_5, xorg-x11-server-common 1.13.0-23.1.el6_5, +2 more
    +4 more products
    Red Hat Enterprise Linux Server (v. 6) xorg-x11-server 1.13.0-23.1.el6_5, xorg-x11-server-Xorg 1.13.0-23.1.el6_5, xorg-x11-server-common 1.13.0-23.1.el6_5, xorg-x11-server-Xephyr 1.13.0-23.1.el6_5 Red Hat Enterprise Linux Server Optional (v. 6) xorg-x11-server 1.13.0-23.1.el6_5, xorg-x11-server-Xdmx 1.13.0-23.1.el6_5, xorg-x11-server-Xvfb 1.13.0-23.1.el6_5, xorg-x11-server-Xnest 1.13.0-23.1.el6_5, xorg-x11-server-source 1.13.0-23.1.el6_5 Red Hat Enterprise Linux Workstation (v. 6) xorg-x11-server 1.13.0-23.1.el6_5, xorg-x11-server-Xorg 1.13.0-23.1.el6_5, xorg-x11-server-common 1.13.0-23.1.el6_5, xorg-x11-server-Xephyr 1.13.0-23.1.el6_5 Red Hat Enterprise Linux Workstation Optional (v. 6) xorg-x11-server 1.13.0-23.1.el6_5, xorg-x11-server-Xdmx 1.13.0-23.1.el6_5, xorg-x11-server-Xvfb 1.13.0-23.1.el6_5, xorg-x11-server-Xnest 1.13.0-23.1.el6_5, xorg-x11-server-source 1.13.0-23.1.el6_5
    fixed: vendor fix RHSA-2013:1868
  • Red Hat Enterprise Linux 7 xorg-x11-server, xorg-x11-server-Xdmx, xorg-x11-server-Xorg, xorg-x11-server-Xvfb, xorg-x11-server-Xnest, xorg-x11-server-common, +3 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.88% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-191 Integer Underflow (Wrap or Wraparound)

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.