CVE-2024-34397VulnerabilityPublished 2 Sep 2025Updated 7 Sep 2026

Red Hat Security Advisory: glib2 security update

Affects Red HatSource GCVE Database

Mentioned vulnerabilities

Authoritative record:CVE-2024-34397· Medium 5.2

Not known to be exploited · CVSS 5.2 Medium : upgrade to 2.80.1 or 2.78.5 when convenient.

Data as of 26 Oct 2026, 06:26 UTC

CVSS base score

5.2Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 2.80.1, 2.78.5

Exploitation evidence

Disclosed: evidence found.
CVE published 7 May 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade debian/glib to 2.80.1 or 2.78.5.

Affected software

Product	Affected	Fixed in
Debiandebian/glib`pkg:deb/debian/glib`Other threats	Affected <2.78.5 >=2.79.0 <2.80.1	Fixed in 2.78.5 2.80.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released updated glib2 packages for Red Hat Enterprise Linux 8.4 to fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2025:14990 to remediate the issues. Details on applying the update are available at https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are specified.

Description

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures. Security Fix(es): * glib2: Signal subscription vulnerabilities (CVE-2024-34397) * glib: buffer overflow in set_connect_msg() (CVE-2024-52533) * glib: Buffer Underflow on GLib through glib/gstring.c via function g_string_insert_unichar (CVE-2025-4373) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Impact

The vulnerabilities affect core GLib functionality, which is widely used by applications on Red Hat Enterprise Linux 8.4. Exploitation could lead to memory corruption such as buffer overflow or underflow, potentially causing application crashes or other unintended behavior. The advisory rates the overall security impact as Moderate. There are no known exploits in the wild at this time.

Summary

This advisory covers three security vulnerabilities in the glib2 library used in Red Hat Enterprise Linux 8.4. CVE-2024-34397 involves signal subscription vulnerabilities, CVE-2024-52533 is a buffer overflow in the set_connect_msg() function, and CVE-2025-4373 is a buffer underflow in the g_string_insert_unichar function within glib/gstring.c. GLib is a core library providing fundamental data structures and system components for applications written in C, including the GNOME desktop environment. The vulnerabilities could potentially lead to memory corruption issues. Red Hat has released updated glib2 packages to address these flaws.

CWE-940Improper Verification of Source of a Communication Channel (opens in a new tab)
Base weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin.
Architecture and Design
Use a mechanism that can validate the identity of the source, such as a certificate, and validate the integrity of data to ensure that it cannot be modified in transit using an Adversary-in-the-Middle (AITM) attack.
OWASP Cheat Sheets
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V1.14.1 (opens in a new tab)
V14.5.2 (opens in a new tab)
V14.5.3 (opens in a new tab)
Attack patterns
WebView Injection (opens in a new tab)
Connection Reset (opens in a new tab)
TCP RST Injection (opens in a new tab)
Traffic Injection (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-193Off-by-one Error (opens in a new tab)
Base weakness
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.
Implementation
When copying character arrays or using character manipulation methods, the correct size parameter must be used to account for the null terminator that needs to be added at the end of the array.
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-124Buffer Underwrite ('Buffer Underflow') (opens in a new tab)
Base weaknessLikelihood of exploit: Medium
The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.
Requirements
Choose a language that is not susceptible to these issues.
Implementation
All calculated values that are used as index or for pointer arithmetic should be validated to ensure that they are within an expected range.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 17 Aug 2026, 21:58 UTC

WeaknessesCWE-940, CWE-193, CWE-124

Technical details

References

Community reviews

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