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CVE-2011-0064

The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango 1.28.3, Firefox, and...

6.8 MediumFix available

CVE-2011-0064 is a medium vulnerability (CVSS 6.8) in Gnome Pango, published March 2, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.33%, the 88th percentile. Fixed in pango1.0 1.28.3-2~sid1.

What does this mean?
Severity
6.8 MediumCVSS 2.0, NVD
Exploit chance
3.33%EPSS, 88th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
1.28.3-2~sid1pango1.0 +16 more

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.

Exploit likelihood

3.33%Down 3.3 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
pango1.0
Debian:12
before 1.28.3-2~sid1
1.28.3-2~sid1
pango1.0
Debian:13
before 1.28.3-2~sid1
1.28.3-2~sid1
pango1.0
Debian:14
before 1.28.3-2~sid1
1.28.3-2~sid1
pango1.0
Debian:6.0
before 1.28.3-1+squeeze2, plus listed versions
1.28.3-1+squeeze1
1.28.3-1+squeeze2
pango
Red Hat:enterprise_linux:6::client
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango-debuginfo
Red Hat:enterprise_linux:6::client
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango-devel
Red Hat:enterprise_linux:6::client
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango
Red Hat:enterprise_linux:6::computenode
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango-debuginfo
Red Hat:enterprise_linux:6::computenode
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango-devel
Red Hat:enterprise_linux:6::computenode
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
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Affected packages
PackageAffectedFixed
pango
Red Hat:enterprise_linux:6::server
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango-debuginfo
Red Hat:enterprise_linux:6::server
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango-devel
Red Hat:enterprise_linux:6::server
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango
Red Hat:enterprise_linux:6::workstation
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango-debuginfo
Red Hat:enterprise_linux:6::workstation
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango-devel
Red Hat:enterprise_linux:6::workstation
before 0:1.28.1-3.el6_0.5
0:1.28.1-3.el6_0.5
pango
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
before 1.40.3-1.1
1.40.3-1.1

What each source reports

NVD Score used6.8

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.

Record
CVE-2011-0064
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Updated
2026-11-02
CVE ListNo score

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.

Record
CVE-2011-0064
Updated
2026-11-02
EUVDEUVD-2011-0090No score

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.

Record
EUVD-2011-0090
Updated
2026-11-03
GitHub AdvisoriesGHSA-49v5-wqh2-vj5qNo score

The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango 1.28.3, Firefox, and...

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.

Record
GHSA-49v5-wqh2-vj5q
Updated
2026-11-02
OSVNo score

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.

Record
CVE-2011-0064
Updated
2026-11-02
OSVDEBIAN-CVE-2011-0064No score

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.

Record
DEBIAN-CVE-2011-0064
Updated
2026-11-02
OSVopenSUSE-SU-2024:10578-1No score

libpango-1_0-0-1.40.3-1.1 on GA media

These are all security issues fixed in the libpango-1_0-0-1.40.3-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10578-1
Updated
2026-11-02

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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