UBUNTU-CVE-2026-15588

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Source
https://ubuntu.com/security/CVE-2026-15588
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15588.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-15588
Upstream
  • CVE-2026-15588
Published
2026-07-20T12:17:00Z
Modified
2026-07-29T07:53:22Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A denial-of-service and resource exhaustion vulnerability exists within the GDBus component of GLib. The gdbusauth authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang.

References

Affected packages

Ubuntu:22.04:LTS
glib2.0

Package

Name
glib2.0
Purl
pkg:deb/ubuntu/glib2.0?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.68.4-1ubuntu1
2.70.1-1
2.70.2-1
2.71.0-2
2.71.1-1
2.71.2-1
2.71.3-1
2.72.0-1
2.72.1-1
2.72.4-0ubuntu1
2.72.4-0ubuntu2
2.72.4-0ubuntu2.2
2.72.4-0ubuntu2.3
2.72.4-0ubuntu2.4
2.72.4-0ubuntu2.5
2.72.4-0ubuntu2.6
2.72.4-0ubuntu2.7
2.72.4-0ubuntu2.8
2.72.4-0ubuntu2.9

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libglib2.0-0",
            "binary_version": "2.72.4-0ubuntu2.9"
        },
        {
            "binary_name": "libglib2.0-bin",
            "binary_version": "2.72.4-0ubuntu2.9"
        },
        {
            "binary_name": "libglib2.0-data",
            "binary_version": "2.72.4-0ubuntu2.9"
        },
        {
            "binary_name": "libglib2.0-dev-bin",
            "binary_version": "2.72.4-0ubuntu2.9"
        },
        {
            "binary_name": "libglib2.0-tests",
            "binary_version": "2.72.4-0ubuntu2.9"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15588.json"
Ubuntu:24.04:LTS
glib2.0

Package

Name
glib2.0
Purl
pkg:deb/ubuntu/glib2.0?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.78.0-2
2.78.1-4
2.78.3-1
2.78.3-2
2.79.1-1
2.79.2-1~ubuntu1
2.79.3-3ubuntu5
2.80.0-6ubuntu1
2.80.0-6ubuntu3
2.80.0-6ubuntu3.1
2.80.0-6ubuntu3.2
2.80.0-6ubuntu3.4
2.80.0-6ubuntu3.5
2.80.0-6ubuntu3.6
2.80.0-6ubuntu3.7
2.80.0-6ubuntu3.8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-girepository-3.0",
            "binary_version": "2.80.0-6ubuntu3.8"
        },
        {
            "binary_name": "gir1.2-glib-2.0",
            "binary_version": "2.80.0-6ubuntu3.8"
        },
        {
            "binary_name": "libgirepository-2.0-0",
            "binary_version": "2.80.0-6ubuntu3.8"
        },
        {
            "binary_name": "libglib2.0-0t64",
            "binary_version": "2.80.0-6ubuntu3.8"
        },
        {
            "binary_name": "libglib2.0-bin",
            "binary_version": "2.80.0-6ubuntu3.8"
        },
        {
            "binary_name": "libglib2.0-data",
            "binary_version": "2.80.0-6ubuntu3.8"
        },
        {
            "binary_name": "libglib2.0-dev-bin",
            "binary_version": "2.80.0-6ubuntu3.8"
        },
        {
            "binary_name": "libglib2.0-tests",
            "binary_version": "2.80.0-6ubuntu3.8"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15588.json"
Ubuntu:26.04:LTS
glib2.0

Package

Name
glib2.0
Purl
pkg:deb/ubuntu/glib2.0?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.86.0-2
2.86.1-1
2.86.1-2
2.86.2-1
2.86.3-1
2.86.3-4
2.87.2-2
2.87.2-3
2.87.3-1
2.88.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-girepository-3.0",
            "binary_version": "2.88.0-1"
        },
        {
            "binary_name": "gir1.2-glib-2.0",
            "binary_version": "2.88.0-1"
        },
        {
            "binary_name": "girepository-tools",
            "binary_version": "2.88.0-1"
        },
        {
            "binary_name": "libgio-2.0-dev-bin",
            "binary_version": "2.88.0-1"
        },
        {
            "binary_name": "libgirepository-2.0-0",
            "binary_version": "2.88.0-1"
        },
        {
            "binary_name": "libglib2.0-0t64",
            "binary_version": "2.88.0-1"
        },
        {
            "binary_name": "libglib2.0-bin",
            "binary_version": "2.88.0-1"
        },
        {
            "binary_name": "libglib2.0-data",
            "binary_version": "2.88.0-1"
        },
        {
            "binary_name": "libglib2.0-dev-bin",
            "binary_version": "2.88.0-1"
        },
        {
            "binary_name": "libglib2.0-tests",
            "binary_version": "2.88.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15588.json"
Ubuntu:Pro:14.04:LTS
glib2.0

Package

Name
glib2.0
Purl
pkg:deb/ubuntu/glib2.0?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.38.0-1ubuntu1
2.38.1-1
2.39.1-0ubuntu1
2.39.1-0ubuntu2
2.39.1-0ubuntu3
2.39.2-0ubuntu1
2.39.2-0ubuntu2
2.39.3-0ubuntu4
2.39.4-0ubuntu1
2.39.90-0ubuntu1
2.39.91-0ubuntu2
2.39.91-0ubuntu3
2.39.92-2
2.40.0-1
2.40.0-1ubuntu1
2.40.0-2
2.40.2-0ubuntu1
2.40.2-0ubuntu1.1
2.40.2-0ubuntu1.1+esm1
2.40.2-0ubuntu1.1+esm2
2.40.2-0ubuntu1.1+esm3
2.40.2-0ubuntu1.1+esm4
2.40.2-0ubuntu1.1+esm6
2.40.2-0ubuntu1.1+esm7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libglib2.0-0",
            "binary_version": "2.40.2-0ubuntu1.1+esm7"
        },
        {
            "binary_name": "libglib2.0-0-refdbg",
            "binary_version": "2.40.2-0ubuntu1.1+esm7"
        },
        {
            "binary_name": "libglib2.0-bin",
            "binary_version": "2.40.2-0ubuntu1.1+esm7"
        },
        {
            "binary_name": "libglib2.0-data",
            "binary_version": "2.40.2-0ubuntu1.1+esm7"
        },
        {
            "binary_name": "libglib2.0-tests",
            "binary_version": "2.40.2-0ubuntu1.1+esm7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15588.json"
Ubuntu:Pro:16.04:LTS
glib2.0

Package

Name
glib2.0
Purl
pkg:deb/ubuntu/glib2.0?arch=source&distro=esm-infra%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.46.1-1
2.46.1-2
2.47.1-1
2.47.3-3
2.47.4-1
2.47.5-1
2.47.6-1
2.48.0-1ubuntu3
2.48.0-1ubuntu4
2.48.1-1~ubuntu16.04.1
2.48.2-0ubuntu1
2.48.2-0ubuntu3
2.48.2-0ubuntu4
2.48.2-0ubuntu4.1
2.48.2-0ubuntu4.2
2.48.2-0ubuntu4.3
2.48.2-0ubuntu4.4
2.48.2-0ubuntu4.5
2.48.2-0ubuntu4.6
2.48.2-0ubuntu4.7
2.48.2-0ubuntu4.8
2.48.2-0ubuntu4.8+esm1
2.48.2-0ubuntu4.8+esm3
2.48.2-0ubuntu4.8+esm4
2.48.2-0ubuntu4.8+esm5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libglib2.0-0",
            "binary_version": "2.48.2-0ubuntu4.8+esm5"
        },
        {
            "binary_name": "libglib2.0-0-refdbg",
            "binary_version": "2.48.2-0ubuntu4.8+esm5"
        },
        {
            "binary_name": "libglib2.0-bin",
            "binary_version": "2.48.2-0ubuntu4.8+esm5"
        },
        {
            "binary_name": "libglib2.0-data",
            "binary_version": "2.48.2-0ubuntu4.8+esm5"
        },
        {
            "binary_name": "libglib2.0-tests",
            "binary_version": "2.48.2-0ubuntu4.8+esm5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15588.json"
Ubuntu:Pro:18.04:LTS
glib2.0

Package

Name
glib2.0
Purl
pkg:deb/ubuntu/glib2.0?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.54.1-1ubuntu1
2.55.2-2ubuntu1
2.56.0-2ubuntu1
2.56.0-4ubuntu1
2.56.1-2ubuntu1
2.56.2-0ubuntu0.18.04.1
2.56.2-0ubuntu0.18.04.2
2.56.3-0ubuntu0.18.04.1
2.56.4-0ubuntu0.18.04.2
2.56.4-0ubuntu0.18.04.3
2.56.4-0ubuntu0.18.04.4
2.56.4-0ubuntu0.18.04.5
2.56.4-0ubuntu0.18.04.6
2.56.4-0ubuntu0.18.04.7
2.56.4-0ubuntu0.18.04.8
2.56.4-0ubuntu0.18.04.9
2.56.4-0ubuntu0.18.04.9+esm3
2.56.4-0ubuntu0.18.04.9+esm4
2.56.4-0ubuntu0.18.04.9+esm5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libglib2.0-0",
            "binary_version": "2.56.4-0ubuntu0.18.04.9+esm5"
        },
        {
            "binary_name": "libglib2.0-bin",
            "binary_version": "2.56.4-0ubuntu0.18.04.9+esm5"
        },
        {
            "binary_name": "libglib2.0-data",
            "binary_version": "2.56.4-0ubuntu0.18.04.9+esm5"
        },
        {
            "binary_name": "libglib2.0-dev-bin",
            "binary_version": "2.56.4-0ubuntu0.18.04.9+esm5"
        },
        {
            "binary_name": "libglib2.0-tests",
            "binary_version": "2.56.4-0ubuntu0.18.04.9+esm5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15588.json"
Ubuntu:Pro:20.04:LTS
glib2.0

Package

Name
glib2.0
Purl
pkg:deb/ubuntu/glib2.0?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.62.1-1
2.63.1-2
2.63.1-2ubuntu1
2.63.3-1
2.63.3-3
2.63.5-2
2.64.0-1
2.64.1-1
2.64.2-1~fakesync1
2.64.3-1~ubuntu20.04.1
2.64.6-1~ubuntu20.04.1
2.64.6-1~ubuntu20.04.2
2.64.6-1~ubuntu20.04.3
2.64.6-1~ubuntu20.04.4
2.64.6-1~ubuntu20.04.6
2.64.6-1~ubuntu20.04.7
2.64.6-1~ubuntu20.04.8
2.64.6-1~ubuntu20.04.9
2.64.6-1~ubuntu20.04.9+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libglib2.0-0",
            "binary_version": "2.64.6-1~ubuntu20.04.9+esm1"
        },
        {
            "binary_name": "libglib2.0-bin",
            "binary_version": "2.64.6-1~ubuntu20.04.9+esm1"
        },
        {
            "binary_name": "libglib2.0-data",
            "binary_version": "2.64.6-1~ubuntu20.04.9+esm1"
        },
        {
            "binary_name": "libglib2.0-dev-bin",
            "binary_version": "2.64.6-1~ubuntu20.04.9+esm1"
        },
        {
            "binary_name": "libglib2.0-tests",
            "binary_version": "2.64.6-1~ubuntu20.04.9+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15588.json"