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01 Record

CVE-2025-4373

Glib: buffer underflow on glib through glib/gstring.c via function g_string_insert_unichar

MediumPUBLISHEDCNA: redhat
CNA base score4.8 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
View raw JSON

02 Description

Glib: buffer underflow on glib through glib/gstring.c via function g_string_insert_unichar

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.63% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 50.3% of scored records. A rank, not a probability.
NVD base score
4.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
NVD analysis status
Deferred. NVD last modified this record on 2026-09-21.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-05-06 14:48Z1 YR AGO
Last updated
2026-10-15 01:02Z14 DAYS AGO
Reserved
2025-05-06
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Medium (CVSS 4.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Weaknesses
  • CWE-124Buffer Underwrite ('Buffer Underflow')Base
Data version
5.2
Document digest
fb5ab687da759725a43c27ad71469ac36ca9581126503ebd3683d4f747cccdcd

05 Affected products

VendorProductVersionsPlatforms
Red HatRed Hat Enterprise Linux 10Not specified—
Red HatRed Hat Enterprise Linux 8Not specified—
Red HatRed Hat Enterprise Linux 8.2 Advanced Update SupportNot specified—
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportNot specified—
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnNot specified—
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportNot specified—
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceNot specified—
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsNot specified—
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceNot specified—
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsNot specified—
Red HatRed Hat Enterprise Linux 9Not specified—
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP SolutionsNot specified—
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP SolutionsNot specified—
Red HatRed Hat Enterprise Linux 9.4 Extended Update SupportNot specified—
Red HatRed Hat Insights proxy 1.5Not specified—
Red HatRed Hat OpenShift distributed tracing 3.6.0Not specified—
Red HatRed Hat Enterprise Linux 6Not specified—
Red HatRed Hat Enterprise Linux 7Not specified—

06 References

07 Fixed in

AlmaLinux 8

  • glib2
    Fixed in 2.56.4-166.el8_10
  • glib2-devel
    Fixed in 2.56.4-166.el8_10
  • glib2-doc
    Fixed in 2.56.4-166.el8_10
  • glib2-fam
    Fixed in 2.56.4-166.el8_10
  • glib2-static
    Fixed in 2.56.4-166.el8_10
  • glib2-tests
    Fixed in 2.56.4-166.el8_10

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • glib2
    Fixed in 2.68.4-16.el9_6.2
  • glib2-devel
    Fixed in 2.68.4-16.el9_6.2
  • glib2-doc
    Fixed in 2.68.4-16.el9_6.2
  • glib2-static
    Fixed in 2.68.4-16.el9_6.2
  • glib2-tests
    Fixed in 2.68.4-16.el9_6.2

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • glib2
    Fixed in 2.56.4-166.el8_10
  • glib2-devel
    Fixed in 2.56.4-166.el8_10
  • glib2-doc
    Fixed in 2.56.4-166.el8_10
  • glib2-fam
    Fixed in 2.56.4-166.el8_10
  • glib2-static
    Fixed in 2.56.4-166.el8_10
  • glib2-tests
    Fixed in 2.56.4-166.el8_10

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • glib2
    Fixed in 2.68.4-16.el9_6.2
  • glib2-devel
    Fixed in 2.68.4-16.el9_6.2
  • glib2-doc
    Fixed in 2.68.4-16.el9_6.2
  • glib2-static
    Fixed in 2.68.4-16.el9_6.2
  • glib2-tests
    Fixed in 2.68.4-16.el9_6.2

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • glib2.0
    Fixed in 2.74.6-2+deb12u7

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • glib2.0
    Fixed in 2.84.1-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • glib2.0
    Fixed in 2.84.1-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • glib2.0
    Fixed in 2.64.6-1~ubuntu20.04.9

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • glib2.0
    Fixed in 2.72.4-0ubuntu2.5

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • glib2.0
    Fixed in 2.80.0-6ubuntu3.4

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • glib2.0
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • glib2.0
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • glib2.0
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.