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    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:Jul 16, 2013
    Last Modified:Apr 11, 2025
    EPS:Jan 18, 2014
    EPSS Score:0.02998
    CVSS Score:5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Opensuse
    Product
    Opensuse
    Vendor
    Pixman
    Product
    Pixman
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High