CVE-2013-6425

Integer underflow in the pixman_trapezoid_valid macro in pixman.h in Pixman before 0.32.0, as used in X.Org server and cairo, allows context-dependent attackers to cause a denial of service (crash) via a negative bottom value.

Published: 2014-01-18 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-6425 is rated Moderate Risk (49.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.00%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-6425

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 3.63% 3.00% -0.63%
2 2025-03-29 3.00% 3.63% +0.63%
3 2025-03-19 — 3.00% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-6425

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2013-6425

OS Trackers for CVE-2013-6425

vendor priority summary link
debian not yet assigned CVE-2013-6425 not yet assigned priority: Debian including 1 source packages (pixman), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-6425
gentoo normal CVE-2013-6425: 1 GLSA(s) (201402-03), 1 atom(s) (x11-libs/pixman); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-6425
redhat high — https://access.redhat.com/security/cve/CVE-2013-6425
ubuntu medium CVE-2013-6425 medium priority: Ubuntu including 1 source packages (pixman), 6 status rows across 6 suites (lucid, precise, quantal, raring, saucy, upstream): released 5, ignored 1. https://ubuntu.com/security/CVE-2013-6425

Affected software / configurations for CVE-2013-6425

Vendor Product Version Raw CPE
pixman pixman < 0.32.0 cpe:2.3:a:pixman:pixman:*:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 12.10 cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
canonical ubuntu_linux 13.04 cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*
canonical ubuntu_linux 13.10 cpe:2.3:o:canonical:ubuntu_linux:13.10:*:*:*:*:*:*:*
debian debian_linux 6.0 cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 5.0 cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 6.0 cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_eus 6.5 cpe:2.3:o:redhat:enterprise_linux_eus:6.5:*:*:*:*:*:*:*
redhat enterprise_linux_server 5.0 cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 6.0 cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 6.5 cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 6.5 cpe:2.3:o:redhat:enterprise_linux_server_tus:6.5:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 5.0 cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 6.0 cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
opensuse opensuse 11.4 cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
opensuse opensuse 12.2 cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*
opensuse opensuse 12.3 cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
opensuse opensuse 13.1 cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*

References for CVE-2013-6425

URL Tags
http://cgit.freedesktop.org/pixman/commit/?id=5e14da97f16e421d084a9e735be21b1025150f0c Patch Third Party Advisory
http://lists.freedesktop.org/archives/pixman/2013-November/003109.html Patch Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2014-01/msg00001.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2014-01/msg00005.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2014-01/msg00008.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2014-01/msg00097.html Mailing List Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2013-1869.html Third Party Advisory
http://www.debian.org/security/2013/dsa-2823 Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/12/03/8 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/12/04/8 Mailing List Third Party Advisory
http://www.ubuntu.com/usn/USN-2047-1 Third Party Advisory
https://bugs.freedesktop.org/show_bug.cgi?id=67484 Issue Tracking Patch Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1197921 Issue Tracking Patch Third Party Advisory
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