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Vulnerability record · CVE-2011-0064 · published 7 March 2011

CVE-2011-0064: Gnome pango vulnerability

Gnome · Pango

The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango 1.28.3, Firefox, and other products, does not verify that memory reallocations succeed, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly execute arbitrary code via crafted OpenType font data that triggers use of an incorrect index.

6.8 CVSS 2.0 Medium EPSS 3.3% · top 11.8%
6.8CVSS 2.0 base score
3.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
46References
16 Jun 2026Last modified by NVD

Description

The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango 1.28.3, Firefox, and other products, does not verify that memory reallocations succeed, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly execute arbitrary code via crafted OpenType font data that triggers use of an incorrect index.

AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://cgit.freedesktop.org/harfbuzz/commit/?id=a6a79df5fe2ed2cd307e7a991346faee164e70d9 Patch
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056065.html
http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
http://secunia.com/advisories/43559 Vendor Advisory
http://secunia.com/advisories/43572 Vendor Advisory
http://secunia.com/advisories/43578 Vendor Advisory
http://secunia.com/advisories/43800
http://securitytracker.com/id?1025145
http://www.debian.org/security/2011/dsa-2178
http://www.mandriva.com/security/advisories?name=MDVSA-2011:040
http://www.redhat.com/support/errata/RHSA-2011-0309.html
http://www.securityfocus.com/bid/46632
http://www.ubuntu.com/usn/USN-1082-1
http://www.vupen.com/english/advisories/2011/0543 Vendor Advisory
http://www.vupen.com/english/advisories/2011/0555 Vendor Advisory
http://www.vupen.com/english/advisories/2011/0558 Vendor Advisory
http://www.vupen.com/english/advisories/2011/0584
http://www.vupen.com/english/advisories/2011/0683
https://bugzilla.mozilla.org/show_bug.cgi?id=606997
https://bugzilla.novell.com/show_bug.cgi?id=672502
https://bugzilla.redhat.com/show_bug.cgi?id=678563 Patch
https://build.opensuse.org/request/show/63070 Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/65770
http://cgit.freedesktop.org/harfbuzz/commit/?id=a6a79df5fe2ed2cd307e7a991346faee164e70d9 Patch
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056065.html
http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
http://secunia.com/advisories/43559 Vendor Advisory
http://secunia.com/advisories/43572 Vendor Advisory
http://secunia.com/advisories/43578 Vendor Advisory
http://secunia.com/advisories/43800
http://securitytracker.com/id?1025145
http://www.debian.org/security/2011/dsa-2178
http://www.mandriva.com/security/advisories?name=MDVSA-2011:040
http://www.redhat.com/support/errata/RHSA-2011-0309.html
http://www.securityfocus.com/bid/46632
http://www.ubuntu.com/usn/USN-1082-1
http://www.vupen.com/english/advisories/2011/0543 Vendor Advisory
http://www.vupen.com/english/advisories/2011/0555 Vendor Advisory
http://www.vupen.com/english/advisories/2011/0558 Vendor Advisory
http://www.vupen.com/english/advisories/2011/0584

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2011-0064), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.