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CVE-2018-16428

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer...

9.8 CriticalFix available

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

4.69%Up 3.0 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference.

Record
CVE-2018-16428
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-476
Updated
2026-11-02
CVE List No score

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference.

Record
CVE-2018-16428
Updated
2026-11-02
EUVDEUVD-2018-8268 No score

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference.

Record
EUVD-2018-8268
Updated
2026-11-03
GitHub AdvisoriesGHSA-wj6v-2jfm-gw75 9.8

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer...

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference.

Record
GHSA-wj6v-2jfm-gw75
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-476
Updated
2026-11-02
OSV 9.8

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference.

Record
CVE-2018-16428
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-16428 9.8

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference.

Record
DEBIAN-CVE-2018-16428
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 7 moreShow less
OSVUBUNTU-CVE-2018-16428 9.8

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference.

Record
UBUNTU-CVE-2018-16428
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2018-0405 No score

Updated glib2.0 packages fix security vulnerabilities

The updated glib2.0 packages fix security vulnerabilities:

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference (CVE-2018-16428).

GNOME GLib 2.56.1 has an out-of-bounds read vulnerability in g_markup_parse_context_parse() in gmarkup.c, related to utf8_str() (CVE-2018-16429).

Record
MGASA-2018-0405
Updated
2026-11-02
OSVopenSUSE-SU-2024:10791-1 No score

gio-branding-upstream-2.68.4-2.2 on GA media

These are all security issues fixed in the gio-branding-upstream-2.68.4-2.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10791-1
Updated
2026-11-02
OSVSUSE-SU-2018:3913-1 No score

Security update for glib2

This update for glib2 fixes the following issues:

Security issues fixed:

  • CVE-2018-16428: Do not do a NULL pointer dereference (crash). Avoid that, at the cost of introducing a new translatable error message (bsc#1107121).
  • CVE-2018-16429: Fixed out-of-bounds read vulnerability ing_markup_parse_context_parse() (bsc#1107116).

Non-security issue fixed:

  • various GVariant parsing issues have been resolved (bsc#1111499)
Record
SUSE-SU-2018:3913-1
Updated
2026-11-02
OSVSUSE-SU-2019:1596-1 No score

Security update for glib2

This update for glib2 fixes the following issues:

Security issues fixed:

  • CVE-2019-12450: Fixed an improper file permission when copy operation takes place (bsc#1137001).
  • CVE-2018-16428: Avoid a NULL pointer dereference (bsc#1107121).
  • CVE-2018-16429: Fixed out-of-bounds read vulnerability ing_markup_parse_context_parse() (bsc#1107116).
  • Some exploitable parser bugs in GVariant and GDBus subsystems were fixed (bsc#1111499).
Record
SUSE-SU-2019:1596-1
Updated
2026-11-02
OSVSUSE-SU-2019:1722-1 No score

Security update for glib2

This update for glib2 provides the following fix:

Security issues fixed:

  • CVE-2019-12450: Fixed an improper file permission when copy operation takes place (bsc#1137001).
  • CVE-2018-16428: Avoid a null pointer dereference that could crash glib2 users in markup processing (bnc#1107121).
  • CVE-2018-16429: Fixed out-of-bounds read vulnerability ing_markup_parse_context_parse() (bsc#1107116).

Non-security issues fixed:

  • Install dummy *-mimeapps.list files to prevent dead symlinks. (bsc#1061599)
Record
SUSE-SU-2019:1722-1
Updated
2026-11-02
OSVUSN-3767-1 No score

glib2.0 vulnerabilities

It was discovered that GLib incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2018-16428)

It was discovered that GLib incorrectly handled certain files. An attacker could possibly use this issue to access sensitive information. (CVE-2018-16429)

Record
USN-3767-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
glib2.0
Debian:12
 before 2.58.0-1
2.58.0-1
glib2.0
Debian:13
 before 2.58.0-1
2.58.0-1
glib2.0
Debian:14
 before 2.58.0-1
2.58.0-1
glib2.0
Debian:8
From an advisory covering 3 CVEs
 before 2.42.1-1+deb8u2, plus listed versions
2.42.1-12.42.1-1+deb8u1
2.42.1-1+deb8u2
glib2.0
Mageia:6
From an advisory covering 2 CVEs
 before 2.54.3-1.2.mga6
2.54.3-1.2.mga6
glib2
SUSE:Linux Enterprise Module for Basesystem 15
From an advisory covering 2 CVEs
 before 2.54.3-4.7.1
2.54.3-4.7.1
glib2
SUSE:Linux Enterprise Module for Package Hub 15
From an advisory covering 2 CVEs
 before 2.54.3-4.7.1
2.54.3-4.7.1
glib2
SUSE:Linux Enterprise Server 12-LTSS
From an advisory covering 3 CVEs
 before 2.38.2-7.9.2
2.38.2-7.9.2
glib2
SUSE:Linux Enterprise Server 12 SP1-LTSS
From an advisory covering 3 CVEs
 before 2.38.2-7.9.2
2.38.2-7.9.2
glib2
SUSE:OpenStack Cloud 7
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
Show 20 moreShow less
Affected packages
PackageAffectedFixed
glib2
SUSE:Linux Enterprise Desktop 12 SP3
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Desktop 12 SP4
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Software Development Kit 12 SP3
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Software Development Kit 12 SP4
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Server 12 SP2-LTSS
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Server 12 SP2-BCL
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Server 12 SP3
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Server 12 SP4
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Workstation Extension 12 SP3
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Linux Enterprise Workstation Extension 12 SP4
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2
SUSE:Enterprise Storage 4
From an advisory covering 3 CVEs
 before 2.48.2-12.12.2
2.48.2-12.12.2
glib2.0
Ubuntu:14.04:LTS
 before 2.40.2-0ubuntu1.1, plus listed versions
2.38.0-1ubuntu12.38.1-12.39.1-0ubuntu12.39.1-0ubuntu22.39.1-0ubuntu3
Show 12 moreShow less
2.39.2-0ubuntu12.39.2-0ubuntu22.39.3-0ubuntu42.39.4-0ubuntu12.39.90-0ubuntu12.39.91-0ubuntu22.39.91-0ubuntu32.39.92-22.40.0-12.40.0-1ubuntu12.40.0-22.40.2-0ubuntu1
2.40.2-0ubuntu1.1
glib2.0
Ubuntu:16.04:LTS
 before 2.48.2-0ubuntu4.1, plus listed versions
2.46.1-12.46.1-22.47.1-12.47.3-32.47.4-1
Show 8 moreShow less
2.47.5-12.47.6-12.48.0-1ubuntu32.48.0-1ubuntu42.48.1-1~ubuntu16.04.12.48.2-0ubuntu12.48.2-0ubuntu32.48.2-0ubuntu4
2.48.2-0ubuntu4.1
glib2.0
Ubuntu:18.04:LTS
 before 2.56.2-0ubuntu0.18.04.2, plus listed versions
2.54.1-1ubuntu12.55.2-2ubuntu12.56.0-2ubuntu12.56.0-4ubuntu12.56.1-2ubuntu12.56.2-0ubuntu0.18.04.1
2.56.2-0ubuntu0.18.04.2
glib2.0
Ubuntu:14.04:LTS
From an advisory covering 2 CVEs
 before 2.40.2-0ubuntu1.1, plus listed versions
2.38.0-1ubuntu12.38.1-12.39.1-0ubuntu12.39.1-0ubuntu22.39.1-0ubuntu3
Show 12 moreShow less
2.39.2-0ubuntu12.39.2-0ubuntu22.39.3-0ubuntu42.39.4-0ubuntu12.39.90-0ubuntu12.39.91-0ubuntu22.39.91-0ubuntu32.39.92-22.40.0-12.40.0-1ubuntu12.40.0-22.40.2-0ubuntu1
2.40.2-0ubuntu1.1
glib2.0
Ubuntu:16.04:LTS
From an advisory covering 2 CVEs
 before 2.48.2-0ubuntu4.1, plus listed versions
2.46.1-12.46.1-22.47.1-12.47.3-32.47.4-1
Show 8 moreShow less
2.47.5-12.47.6-12.48.0-1ubuntu32.48.0-1ubuntu42.48.1-1~ubuntu16.04.12.48.2-0ubuntu12.48.2-0ubuntu32.48.2-0ubuntu4
2.48.2-0ubuntu4.1
glib2.0
Ubuntu:18.04:LTS
From an advisory covering 2 CVEs
 before 2.56.2-0ubuntu0.18.04.2, plus listed versions
2.54.1-1ubuntu12.55.2-2ubuntu12.56.0-2ubuntu12.56.0-4ubuntu12.56.1-2ubuntu12.56.2-0ubuntu0.18.04.1
2.56.2-0ubuntu0.18.04.2

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-16428 is a critical vulnerability (CVSS 9.8) in Gnome Glib, published September 3, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.69%, the 91st percentile. Fixed in glib2.0 2.58.0-1.

References

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