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    CVE-2015-1803

    The bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont before 1.4.9 and 1.5.x before 1.5.1 does not properly handle character bitmaps it cannot read, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and crash) and possibly execute arbitrary code via a crafted BDF font file.

    Published:Mar 17, 2015
    Last Modified:Apr 12, 2025
    EPS:Mar 20, 2015
    EPSS Score:0.0229
    CVSS Score:8.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    X
    Product
    Libxfont

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    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://advisories.mageia.org/MGASA-2015-0113.html
    http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152497.html
    http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152838.html
    http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00032.html
    http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00002.html
    http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00005.html
    http://rhn.redhat.com/errata/RHSA-2015-1708.html
    http://www.debian.org/security/2015/dsa-3194
    http://www.mandriva.com/security/advisories?name=MDVSA-2015:145
    http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
    http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
    http://www.securityfocus.com/bid/73280
    http://www.securitytracker.com/id/1031935
    http://www.ubuntu.com/usn/USN-2536-1
    http://www.x.org/wiki/Development/Security/Advisory-2015-03-17/
    https://security.gentoo.org/glsa/201507-21
    http://advisories.mageia.org/MGASA-2015-0113.html
    http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152497.html
    http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152838.html
    http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00032.html
    http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00002.html
    http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00005.html
    http://rhn.redhat.com/errata/RHSA-2015-1708.html
    http://www.debian.org/security/2015/dsa-3194
    http://www.mandriva.com/security/advisories?name=MDVSA-2015:145
    http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
    http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
    http://www.securityfocus.com/bid/73280
    http://www.securitytracker.com/id/1031935
    http://www.ubuntu.com/usn/USN-2536-1
    http://www.x.org/wiki/Development/Security/Advisory-2015-03-17/
    https://security.gentoo.org/glsa/201507-21

    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