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TI-2021-08761 Aliases CVE-2021-27218GHSA-vvj7-w55j-xgmw

An issue was discovered in GNOME GLib before 2.66.7 and 2.67.x before 2.67.4.

Priority MEDIUM 40CWE-681Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 2 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

An issue was discovered in GNOME GLib before 2.66.7 and 2.67.x before 2.67.4. If g_byte_array_new_take() was called with a buffer of 4GB or more on a 64-bit platform, the length would be truncated modulo 2**32, causing unintended length truncation.

Why it matters now

EPSS 0.0408 90th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 2 fixed, 2 without a fix

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 · 8

CPEVersionsRoleVendor
cpe:2.3:a:gnome:glib:*:*:*:*:*:*:*:*before 2.66.7; 2.67.0 to before 2.67.4VulnerableGNOME
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:e-series_performance_analyzer:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableBroadcom
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
  • cpe:2.3:a:gnome:glib:*:*:*:*:*:*:*:* Versions before 2.66.7; 2.67.0 to before 2.67.4 Vulnerable ·GNOME
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
  • cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:e-series_performance_analyzer:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Broadcom
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian

Remediation

Red Hat 2 advisories

  • RHSA-2021:4526 Released 2021-11-09 · Red Hat rating Important
    mingw-glib2 security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) mingw-glib2-2.66.7-2.el8, mingw32-glib2-2.66.7-2.el8, mingw32-glib2-static-2.66.7-2.el8 +2
  • RHSA-2021:3058 Released 2021-08-10 · Red Hat rating Moderate
    glib2 security update
    • Red Hat CodeReady Linux Builder (v. 8) glib2-doc-2.56.4-10.el8_4.1, glib2-static-2.56.4-10.el8_4.1
    • Red Hat Enterprise Linux BaseOS (v. 8) glib2-2.56.4-10.el8_4.1, glib2-devel-2.56.4-10.el8_4.1, glib2-fam-2.56.4-10.el8_4.1 +1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:3058, RHSA-2021:4526
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:3058
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27218
  2. 2026-10-03 Alias added: GHSA-vvj7-w55j-xgmw

References

Patch 2

Advisory 5

Other 3

Sources

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