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    CVE-2011-3193

    Heap-based buffer overflow in the Lookup_MarkMarkPos function in the HarfBuzz module (harfbuzz-gpos.c), as used by Qt before 4.7.4 and Pango, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted font file.

    Published:Jul 19, 2011
    Last Modified:Apr 11, 2025
    EPS:Jun 16, 2012
    EPSS Score:0.03158
    CVSS Score:9.3

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Gnome
    Product
    Pango
    Vendor
    Opensuse
    Product
    Opensuse
    Vendor
    Qt
    Product
    Qt
    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 Workstation

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    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://cgit.freedesktop.org/harfbuzz.old/commit/?id=81c8ef785b079980ad5b46be4fe7c7bf156dbf65
    http://cgit.freedesktop.org/harfbuzz/commit/src/harfbuzz-gpos.c?id=da2c52abcd75d46929b34cad55c4fb2c8892bc08
    http://git.gnome.org/browse/pango/commit/pango/opentype/harfbuzz-gpos.c?id=a7a715480db66148b1f487528887508a7991dcd0
    http://lists.opensuse.org/opensuse-updates/2011-10/msg00007.html
    http://lists.opensuse.org/opensuse-updates/2011-10/msg00008.html
    http://rhn.redhat.com/errata/RHSA-2011-1323.html
    http://rhn.redhat.com/errata/RHSA-2011-1324.html
    http://rhn.redhat.com/errata/RHSA-2011-1325.html
    http://rhn.redhat.com/errata/RHSA-2011-1326.html
    http://rhn.redhat.com/errata/RHSA-2011-1327.html
    http://rhn.redhat.com/errata/RHSA-2011-1328.html
    http://secunia.com/advisories/41537
    http://secunia.com/advisories/46117
    http://secunia.com/advisories/46118
    http://secunia.com/advisories/46119
    http://secunia.com/advisories/46128
    http://secunia.com/advisories/46371
    http://secunia.com/advisories/46410
    http://secunia.com/advisories/49895
    http://www.openwall.com/lists/oss-security/2011/08/22/6
    http://www.openwall.com/lists/oss-security/2011/08/24/8
    http://www.openwall.com/lists/oss-security/2011/08/25/1
    http://www.osvdb.org/75652
    http://www.securityfocus.com/bid/49723
    http://www.ubuntu.com/usn/USN-1504-1
    https://exchange.xforce.ibmcloud.com/vulnerabilities/69991
    https://hermes.opensuse.org/messages/12056605
    https://qt.gitorious.org/qt/qt/commit/9ae6f2f9a57f0c3096d5785913e437953fa6775c
    http://cgit.freedesktop.org/harfbuzz.old/commit/?id=81c8ef785b079980ad5b46be4fe7c7bf156dbf65
    http://cgit.freedesktop.org/harfbuzz/commit/src/harfbuzz-gpos.c?id=da2c52abcd75d46929b34cad55c4fb2c8892bc08
    http://git.gnome.org/browse/pango/commit/pango/opentype/harfbuzz-gpos.c?id=a7a715480db66148b1f487528887508a7991dcd0
    http://lists.opensuse.org/opensuse-updates/2011-10/msg00007.html
    http://lists.opensuse.org/opensuse-updates/2011-10/msg00008.html
    http://rhn.redhat.com/errata/RHSA-2011-1323.html
    http://rhn.redhat.com/errata/RHSA-2011-1324.html
    http://rhn.redhat.com/errata/RHSA-2011-1325.html
    http://rhn.redhat.com/errata/RHSA-2011-1326.html
    http://rhn.redhat.com/errata/RHSA-2011-1327.html
    http://rhn.redhat.com/errata/RHSA-2011-1328.html
    http://secunia.com/advisories/41537
    http://secunia.com/advisories/46117
    http://secunia.com/advisories/46118
    http://secunia.com/advisories/46119
    http://secunia.com/advisories/46128
    http://secunia.com/advisories/46371
    http://secunia.com/advisories/46410
    http://secunia.com/advisories/49895
    http://www.openwall.com/lists/oss-security/2011/08/22/6
    http://www.openwall.com/lists/oss-security/2011/08/24/8
    http://www.openwall.com/lists/oss-security/2011/08/25/1
    http://www.osvdb.org/75652
    http://www.securityfocus.com/bid/49723
    http://www.ubuntu.com/usn/USN-1504-1
    https://exchange.xforce.ibmcloud.com/vulnerabilities/69991
    https://hermes.opensuse.org/messages/12056605
    https://qt.gitorious.org/qt/qt/commit/9ae6f2f9a57f0c3096d5785913e437953fa6775c

    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