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TI-2011-00060 Aliases CVE-2011-0064GHSA-49v5-wqh2-vj5q

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

Priority LOW 36Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
—
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.03333 88th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:gnome:pango:1.28.3:*:*:*:*:*:*:*1.28.3VulnerableGNOME
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*all versionsVulnerableMozilla
  • cpe:2.3:a:gnome:pango:1.28.3:*:*:*:*:*:*:* Versions 1.28.3 Vulnerable ·GNOME
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Mozilla

Remediation

Red Hat 1 advisory

  • RHSA-2011:0309 Released 2011-03-01 · Red Hat rating Critical
    pango security update
    • Red Hat Enterprise Linux Desktop (v. 6) pango-1.28.1-3.el6_0.5
    • Red Hat Enterprise Linux Desktop Optional (v. 6) pango-1.28.1-3.el6_0.5, pango-devel-1.28.1-3.el6_0.5
    • Red Hat Enterprise Linux HPC Node (v. 6) pango-1.28.1-3.el6_0.5
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) pango-1.28.1-3.el6_0.5, pango-devel-1.28.1-3.el6_0.5
    • Red Hat Enterprise Linux Server (v. 6) pango-1.28.1-3.el6_0.5, pango-1.28.1-3.el6_0.5.ppc, pango-devel-1.28.1-3.el6_0.5 +1
    • Red Hat Enterprise Linux Workstation (v. 6) pango-1.28.1-3.el6_0.5, pango-devel-1.28.1-3.el6_0.5

Vendor assessments

Red Hat

Red Hat rating: Critical. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2011:0309
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2011:0309
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2011:0309
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2011:0309
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2011:0309
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2011:0309
Not affected: 2 products
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-0064
  2. 2026-10-03 Alias added: GHSA-49v5-wqh2-vj5q

References

Patch 3

Advisory 9

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences