UBUNTU-CVE-2026-16768

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Source
https://ubuntu.com/security/CVE-2026-16768
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16768.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-16768
Upstream
  • CVE-2026-16768
Published
2026-07-23T17:16:00Z
Modified
2026-07-29T10:18:11Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in gdk-pixbuf. When parsing a specially crafted ICO file with pixel values that exceed the defined palette range, an out-of-bounds read can occur due to improper bounds checking against the actual palette size. This vulnerability causes heap bytes to be interpreted as valid palette indices and rendered as RGB pixel values in the output image, allowing an attacker to extract heap content via the generated output, such as a thumbnail.

References

Affected packages

Ubuntu:22.04:LTS
gdk-pixbuf

Package

Name
gdk-pixbuf
Purl
pkg:deb/ubuntu/gdk-pixbuf?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.42.6+dfsg-1build2
2.42.6+dfsg-1build3
2.42.6+dfsg-2ubuntu2
2.42.6+dfsg-2ubuntu3
2.42.8+dfsg-1
2.42.8+dfsg-1ubuntu0.1
2.42.8+dfsg-1ubuntu0.2
2.42.8+dfsg-1ubuntu0.3
2.42.8+dfsg-1ubuntu0.4
2.42.8+dfsg-1ubuntu0.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gdk-pixbuf-tests",
            "binary_version": "2.42.8+dfsg-1ubuntu0.5"
        },
        {
            "binary_name": "gir1.2-gdkpixbuf-2.0",
            "binary_version": "2.42.8+dfsg-1ubuntu0.5"
        },
        {
            "binary_name": "libgdk-pixbuf-2.0-0",
            "binary_version": "2.42.8+dfsg-1ubuntu0.5"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-bin",
            "binary_version": "2.42.8+dfsg-1ubuntu0.5"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-common",
            "binary_version": "2.42.8+dfsg-1ubuntu0.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16768.json"
Ubuntu:24.04:LTS
gdk-pixbuf

Package

Name
gdk-pixbuf
Purl
pkg:deb/ubuntu/gdk-pixbuf?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.42.10+dfsg-1build1
2.42.10+dfsg-3
2.42.10+dfsg-3ubuntu1
2.42.10+dfsg-3ubuntu2
2.42.10+dfsg-3ubuntu3
2.42.10+dfsg-3ubuntu3.1
2.42.10+dfsg-3ubuntu3.2
2.42.10+dfsg-3ubuntu3.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gdk-pixbuf-tests",
            "binary_version": "2.42.10+dfsg-3ubuntu3.3"
        },
        {
            "binary_name": "gir1.2-gdkpixbuf-2.0",
            "binary_version": "2.42.10+dfsg-3ubuntu3.3"
        },
        {
            "binary_name": "libgdk-pixbuf-2.0-0",
            "binary_version": "2.42.10+dfsg-3ubuntu3.3"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-bin",
            "binary_version": "2.42.10+dfsg-3ubuntu3.3"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-common",
            "binary_version": "2.42.10+dfsg-3ubuntu3.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16768.json"
Ubuntu:26.04:LTS
gdk-pixbuf

Package

Name
gdk-pixbuf
Purl
pkg:deb/ubuntu/gdk-pixbuf?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.42.12+dfsg-5
2.44.4+dfsg-1
2.44.5+dfsg-3
2.44.5+dfsg-4
2.44.5+dfsg-4ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gdk-pixbuf-tests",
            "binary_version": "2.44.5+dfsg-4ubuntu1"
        },
        {
            "binary_name": "gir1.2-gdkpixbuf-2.0",
            "binary_version": "2.44.5+dfsg-4ubuntu1"
        },
        {
            "binary_name": "libgdk-pixbuf-2.0-0",
            "binary_version": "2.44.5+dfsg-4ubuntu1"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-bin",
            "binary_version": "2.44.5+dfsg-4ubuntu1"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-common",
            "binary_version": "2.44.5+dfsg-4ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16768.json"
Ubuntu:Pro:16.04:LTS
gdk-pixbuf

Package

Name
gdk-pixbuf
Purl
pkg:deb/ubuntu/gdk-pixbuf?arch=source&distro=esm-infra-legacy%2Fxenial

Affected ranges

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

Affected versions

2.*
2.32.1-1
2.32.2-1
2.32.2-1ubuntu1
2.32.2-1ubuntu1.2
2.32.2-1ubuntu1.3
2.32.2-1ubuntu1.4
2.32.2-1ubuntu1.5
2.32.2-1ubuntu1.6
2.32.2-1ubuntu1.6+esm1
2.32.2-1ubuntu1.6+esm2
2.32.2-1ubuntu1.6+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-gdkpixbuf-2.0",
            "binary_version": "2.32.2-1ubuntu1.6+esm3"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-0",
            "binary_version": "2.32.2-1ubuntu1.6+esm3"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-common",
            "binary_version": "2.32.2-1ubuntu1.6+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16768.json"
Ubuntu:Pro:18.04:LTS
gdk-pixbuf

Package

Name
gdk-pixbuf
Purl
pkg:deb/ubuntu/gdk-pixbuf?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

2.*
2.36.11-1
2.36.11-1ubuntu0.1
2.36.11-2
2.36.11-2ubuntu0.1~esm1
2.36.11-2ubuntu0.1~esm2
2.36.11-2ubuntu0.1~esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-gdkpixbuf-2.0",
            "binary_version": "2.36.11-2ubuntu0.1~esm3"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-0",
            "binary_version": "2.36.11-2ubuntu0.1~esm3"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-bin",
            "binary_version": "2.36.11-2ubuntu0.1~esm3"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-common",
            "binary_version": "2.36.11-2ubuntu0.1~esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16768.json"
Ubuntu:Pro:20.04:LTS
gdk-pixbuf

Package

Name
gdk-pixbuf
Purl
pkg:deb/ubuntu/gdk-pixbuf?arch=source&distro=esm-infra%2Ffocal

Affected ranges

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

Affected versions

2.*
2.40.0+dfsg-1build1
2.40.0+dfsg-1ubuntu1
2.40.0+dfsg-2
2.40.0+dfsg-3
2.40.0+dfsg-3ubuntu0.1
2.40.0+dfsg-3ubuntu0.2
2.40.0+dfsg-3ubuntu0.3
2.40.0+dfsg-3ubuntu0.4
2.40.0+dfsg-3ubuntu0.5
2.40.0+dfsg-3ubuntu0.5+esm1
2.40.0+dfsg-3ubuntu0.5+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-gdkpixbuf-2.0",
            "binary_version": "2.40.0+dfsg-3ubuntu0.5+esm3"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-0",
            "binary_version": "2.40.0+dfsg-3ubuntu0.5+esm3"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-bin",
            "binary_version": "2.40.0+dfsg-3ubuntu0.5+esm3"
        },
        {
            "binary_name": "libgdk-pixbuf2.0-common",
            "binary_version": "2.40.0+dfsg-3ubuntu0.5+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16768.json"