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TI-2021-08762 Aliases CVE-2021-27219GHSA-2wvj-9m7h-43j3

An issue was discovered in GNOME GLib before 2.66.6 and 2.67.x before 2.67.3.

Priority LOW 38CWE-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
Fixed

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

Summary

An issue was discovered in GNOME GLib before 2.66.6 and 2.67.x before 2.67.3. The function g_bytes_new has an integer overflow on 64-bit platforms due to an implicit cast from 64 bits to 32 bits. The overflow could potentially lead to memory corruption.

Why it matters now

EPSS 0.03063 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 13 advisories

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 2.66.6; 2.67.0 to before 2.67.3VulnerableGNOME
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 2.66.6; 2.67.0 to before 2.67.3 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 13 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-2021:2522 Released 2021-06-22 · Red Hat rating Important
    Red Hat Virtualization Host security update [ovirt-4.4.6]
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 redhat-virtualization-host-4.4.6-20210615.0.el8_4, redhat-virtualization-host-image-update-4.4.6-20210615.0.el8_4
  • RHSA-2021:2519 Released 2021-06-22 · Red Hat rating Important
    RHV-H security update (redhat-virtualization-host) 4.3.16
    • RHEL 7-based RHEV-H for RHEV 4 (build requirements) redhat-virtualization-host-4.3.16-20210615.0.el7_9, redhat-virtualization-host-image-update-4.3.16-20210615.0.el7_9
    • Red Hat Virtualization 4 Hypervisor for RHEL 7 redhat-virtualization-host-4.3.16-20210615.0.el7_9, redhat-virtualization-host-image-update-4.3.16-20210615.0.el7_9
Show 10 more Red Hat advisories
  • RHSA-2021:2467 Released 2021-06-17 · Red Hat rating Important
    glib2 security update
    • Red Hat Enterprise Linux Server (v. 6 ELS) glib2-2.28.8-11.el6_10, glib2-devel-2.28.8-11.el6_10
    • Red Hat Enterprise Linux Server Optional (v. 6 ELS) glib2-doc-2.28.8-11.el6_10, glib2-static-2.28.8-11.el6_10
  • RHSA-2021:2204 Released 2021-06-02 · Red Hat rating Important
    glib2 security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) glib2-2.56.1-5.el7_6
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) glib2-devel-2.56.1-5.el7_6, glib2-doc-2.56.1-5.el7_6, glib2-fam-2.56.1-5.el7_6 +2
    • Red Hat Enterprise Linux Server EUS (v. 7.6) glib2-2.56.1-5.el7_6, glib2-2.56.1-5.el7_6.ppc, glib2-devel-2.56.1-5.el7_6 +1
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) glib2-doc-2.56.1-5.el7_6, glib2-fam-2.56.1-5.el7_6, glib2-static-2.56.1-5.el7_6 +2
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) glib2-2.56.1-5.el7_6, glib2-devel-2.56.1-5.el7_6
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) glib2-doc-2.56.1-5.el7_6, glib2-fam-2.56.1-5.el7_6, glib2-static-2.56.1-5.el7_6 +1
  • RHSA-2021:2203 Released 2021-06-02 · Red Hat rating Important
    glib2 security update
    • Red Hat Enterprise Linux Server AUS (v. 7.2) glib2-2.42.2-6.el7_2, glib2-devel-2.42.2-6.el7_2
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.2) glib2-doc-2.42.2-6.el7_2, glib2-fam-2.42.2-6.el7_2
  • RHSA-2021:2175 Released 2021-06-01 · Red Hat rating Important
    glib2 security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) glib2-2.56.1-6.el7_7
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) glib2-devel-2.56.1-6.el7_7, glib2-doc-2.56.1-6.el7_7, glib2-fam-2.56.1-6.el7_7 +2
    • Red Hat Enterprise Linux Server EUS (v. 7.7) glib2-2.56.1-6.el7_7, glib2-2.56.1-6.el7_7.ppc, glib2-devel-2.56.1-6.el7_7 +1
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.7) glib2-doc-2.56.1-6.el7_7, glib2-fam-2.56.1-6.el7_7, glib2-static-2.56.1-6.el7_7 +2
  • RHSA-2021:2170 Released 2021-06-01 · Red Hat rating Important
    glib2 security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) glib2-doc-2.56.4-10.el8_4, glib2-static-2.56.4-10.el8_4
    • Red Hat Enterprise Linux BaseOS (v. 8) glib2-2.56.4-10.el8_4, glib2-devel-2.56.4-10.el8_4, glib2-fam-2.56.4-10.el8_4 +1
  • RHSA-2021:2174 Released 2021-06-01 · Red Hat rating Important
    glib2 security update
    • Red Hat Enterprise Linux Server AUS (v. 7.4) glib2-2.50.3-4.el7_4, glib2-devel-2.50.3-4.el7_4
    • Red Hat Enterprise Linux Server E4S (v. 7.4) glib2-2.50.3-4.el7_4, glib2-devel-2.50.3-4.el7_4
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) glib2-doc-2.50.3-4.el7_4, glib2-fam-2.50.3-4.el7_4, glib2-static-2.50.3-4.el7_4 +1
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.4) glib2-doc-2.50.3-4.el7_4, glib2-fam-2.50.3-4.el7_4, glib2-static-2.50.3-4.el7_4 +1
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) glib2-doc-2.50.3-4.el7_4, glib2-fam-2.50.3-4.el7_4, glib2-static-2.50.3-4.el7_4 +1
    • Red Hat Enterprise Linux Server TUS (v. 7.4) glib2-2.50.3-4.el7_4, glib2-devel-2.50.3-4.el7_4
  • RHSA-2021:2171 Released 2021-06-01 · Red Hat rating Important
    glib2 security update
    • Red Hat CodeReady Linux Builder EUS (v. 8.2) glib2-doc-2.56.4-8.el8_2.1, glib2-static-2.56.4-8.el8_2.1
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) glib2-2.56.4-8.el8_2.1, glib2-devel-2.56.4-8.el8_2.1, glib2-fam-2.56.4-8.el8_2.1 +1
  • RHSA-2021:2173 Released 2021-06-01 · Red Hat rating Important
    glib2 security update
    • Red Hat Enterprise Linux Server AUS (v. 7.3) glib2-2.46.2-5.el7_3, glib2-devel-2.46.2-5.el7_3
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.3) glib2-doc-2.46.2-5.el7_3, glib2-fam-2.46.2-5.el7_3
  • RHSA-2021:2172 Released 2021-06-01 · Red Hat rating Important
    glib2 security update
    • Red Hat CodeReady Linux Builder EUS (v. 8.1) glib2-doc-2.56.4-8.el8_1, glib2-static-2.56.4-8.el8_1
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) glib2-2.56.4-8.el8_1, glib2-devel-2.56.4-8.el8_1, glib2-fam-2.56.4-8.el8_1 +1
  • RHSA-2021:2147 Released 2021-05-31 · Red Hat rating Important
    glib2 security update
    • Red Hat Enterprise Linux Client (v. 7) glib2-2.56.1-9.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) glib2-devel-2.56.1-9.el7_9, glib2-doc-2.56.1-9.el7_9, glib2-fam-2.56.1-9.el7_9 +2
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) glib2-devel-2.56.1-9.el7_9, glib2-doc-2.56.1-9.el7_9, glib2-fam-2.56.1-9.el7_9 +2
    • Red Hat Enterprise Linux Server (v. 7) glib2-2.56.1-9.el7_9, glib2-2.56.1-9.el7_9.ppc, glib2-devel-2.56.1-9.el7_9 +1
    • Red Hat Enterprise Linux Server Optional (v. 7) glib2-doc-2.56.1-9.el7_9, glib2-fam-2.56.1-9.el7_9, glib2-static-2.56.1-9.el7_9 +2
    • Red Hat Enterprise Linux Workstation (v. 7) glib2-2.56.1-9.el7_9, glib2-devel-2.56.1-9.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) glib2-doc-2.56.1-9.el7_9, glib2-fam-2.56.1-9.el7_9, glib2-static-2.56.1-9.el7_9 +1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
7Server-RHMTC-1.4Fixed—
8Base-RHMTC-1.4Fixed—
RHEL 7-based RHEV-H for RHEV 4 (build requirements)Fixed RHSA-2021:2519
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:2170, RHSA-2021:4526
Red Hat CodeReady Linux Builder EUS (v. 8.1)Fixed RHSA-2021:2172
Red Hat CodeReady Linux Builder EUS (v. 8.2)Fixed RHSA-2021:2171
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:2170
Red Hat Enterprise Linux BaseOS EUS (v. 8.1)Fixed RHSA-2021:2172
Red Hat Enterprise Linux BaseOS EUS (v. 8.2)Fixed RHSA-2021:2171
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2021:2147
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2021:2147
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6)Fixed RHSA-2021:2204
Red Hat Enterprise Linux ComputeNode EUS (v. 7.7)Fixed RHSA-2021:2175
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2021:2147
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6)Fixed RHSA-2021:2204
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7)Fixed RHSA-2021:2175
Red Hat Enterprise Linux Server (v. 6 ELS)Fixed RHSA-2021:2467
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:2147
Red Hat Enterprise Linux Server AUS (v. 7.2)Fixed RHSA-2021:2203
Red Hat Enterprise Linux Server AUS (v. 7.3)Fixed RHSA-2021:2173
Red Hat Enterprise Linux Server AUS (v. 7.4)Fixed RHSA-2021:2174
Red Hat Enterprise Linux Server E4S (v. 7.4)Fixed RHSA-2021:2174
Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2021:2204
Red Hat Enterprise Linux Server EUS (v. 7.7)Fixed RHSA-2021:2175
Red Hat Enterprise Linux Server Optional (v. 6 ELS)Fixed RHSA-2021:2467
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2021:2147
Red Hat Enterprise Linux Server Optional AUS (v. 7.2)Fixed RHSA-2021:2203
Red Hat Enterprise Linux Server Optional AUS (v. 7.3)Fixed RHSA-2021:2173
Red Hat Enterprise Linux Server Optional AUS (v. 7.4)Fixed RHSA-2021:2174
Red Hat Enterprise Linux Server Optional E4S (v. 7.4)Fixed RHSA-2021:2174
Red Hat Enterprise Linux Server Optional EUS (v. 7.6)Fixed RHSA-2021:2204
Red Hat Enterprise Linux Server Optional EUS (v. 7.7)Fixed RHSA-2021:2175
Red Hat Enterprise Linux Server Optional TUS (v. 7.4)Fixed RHSA-2021:2174
Red Hat Enterprise Linux Server TUS (v. 7.4)Fixed RHSA-2021:2174
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:2147
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2021:2147
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2021:2204
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2021:2204
Red Hat Virtualization 4 Hypervisor for RHEL 7Fixed RHSA-2021:2519
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2021:2522
Not affected: 4 products
  • RHEL 7-based RHEV-H for RHEV 4 (build requirements)
  • RHEL 8-based RHEV-H for RHEV 4 (build requirements)
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27219
  2. 2026-10-03 Alias added: GHSA-2wvj-9m7h-43j3

References

Exploit 1

Advisory 5

Other 1

Sources

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