pango: missing memory reallocation failure checking in hb_buffer_ensure
Published Mar 7, 2011
6.8
MEDIUMCVSS 2.0
EPSS 3.33%
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.
Affected products
No data.
No data.
Red Hat Enterprise Linux 6
pango-0:1.28.1-3.el6_0.5
Fixed · RHSA-2011:0309
Red Hat Enterprise Linux 4
evolution28-pango
Not affected
Red Hat Enterprise Linux 4
pango
Not affected
Red Hat Enterprise Linux 5
pango
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | pango-0:1.28.1-3.el6_0.5 | Fixed | RHSA-2011:0309 |
| Red Hat Enterprise Linux 4 | evolution28-pango | Not affected | n/a |
| Red Hat Enterprise Linux 4 | pango | Not affected | n/a |
| Red Hat Enterprise Linux 5 | pango | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of qt shipped with Red Hat Enterprise Linux 4, 5 and 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.33% (0.03333) | 88.23th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.33% (0.03333) | 87.01th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.56% (0.02563) | 84.18th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.43% (0.07426) | 85.94th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.56% (0.02563) | 84.49th | v4 (v2025.03.14) |
| Dec 17, 2024 | 10.02% (0.10019) | 94.88th | v3 (v2023.03.01) |
| Dec 15, 2023 | 13.56% (0.13559) | 95.06th | v3 (v2023.03.01) |
| Oct 26, 2023 | 14.93% (0.14928) | 95.18th | v3 (v2023.03.01) |
| Sep 5, 2023 | 13.95% (0.13950) | 94.96th | v3 (v2023.03.01) |
| May 20, 2023 | 14.16% (0.14158) | 94.86th | v3 (v2023.03.01) |
| Mar 7, 2023 | 15.01% (0.15012) | 94.90th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.60% (0.06604) | 91.53th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.60% (0.06604) | 90.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.60% (0.06604) | 78.62th | v2 (v2022.01.01) |
No CWE recorded.
References (26)
- http://cgit.freedesktop.org/harfbuzz/commit/?id=a6a79df5fe2ed2cd307e7a991346faee164e70d9 x_refsource_CONFIRMPatch
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056065.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/43559 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/43572 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/43578 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/43800 third-party-advisoryx_refsource_SECUNIA
- http://securitytracker.com/id?1025145 vdb-entryx_refsource_SECTRACK
- http://www.debian.org/security/2011/dsa-2178 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:040 vendor-advisoryx_refsource_MANDRIVA
- http://www.redhat.com/support/errata/RHSA-2011-0309.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/46632 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-1082-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2011/0543 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0555 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0558 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0584 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2011/0683 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2011-0064 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=606997 x_refsource_CONFIRM
- https://bugzilla.novell.com/show_bug.cgi?id=672502 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=678563 x_refsource_CONFIRMPatchIssue Tracking
- https://build.opensuse.org/request/show/63070 x_refsource_CONFIRMPatch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65770 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2011-0064
- https://www.cve.org/CVERecord?id=CVE-2011-0064
Change history (0)
No recorded changes yet.