USN-8039-1

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Source
https://ubuntu.com/security/notices/USN-8039-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8039-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-8039-1
Upstream
Related
Published
2026-02-12T18:00:35Z
Modified
2026-02-20T16:07:32.283299Z
Summary
libpng1.6 vulnerability
Details

It was discovered that the libpng simplified API incorrectly handled quantizing RGB images. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:22.04:LTS / libpng1.6

Package

Name
libpng1.6
Purl
pkg:deb/ubuntu/libpng1.6@1.6.37-3ubuntu0.4?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.37-3ubuntu0.4

Affected versions

1.*
1.6.37-3build4
1.6.37-3build5
1.6.37-3ubuntu0.1
1.6.37-3ubuntu0.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpng-dev",
            "binary_version": "1.6.37-3ubuntu0.4"
        },
        {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.37-3ubuntu0.4"
        },
        {
            "binary_name": "libpng16-16",
            "binary_version": "1.6.37-3ubuntu0.4"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8039-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-25646",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}

Ubuntu:24.04:LTS / libpng1.6

Package

Name
libpng1.6
Purl
pkg:deb/ubuntu/libpng1.6@1.6.43-5ubuntu0.5?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.43-5ubuntu0.5

Affected versions

1.*
1.6.40-1
1.6.40-2
1.6.40-3
1.6.42-1
1.6.43-1
1.6.43-3
1.6.43-5build1
1.6.43-5ubuntu0.1
1.6.43-5ubuntu0.3
1.6.43-5ubuntu0.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpng-dev",
            "binary_version": "1.6.43-5ubuntu0.5"
        },
        {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.43-5ubuntu0.5"
        },
        {
            "binary_name": "libpng16-16t64",
            "binary_version": "1.6.43-5ubuntu0.5"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8039-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-25646",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}

Ubuntu:25.10 / libpng1.6

Package

Name
libpng1.6
Purl
pkg:deb/ubuntu/libpng1.6@1.6.50-1ubuntu0.4?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.50-1ubuntu0.4

Affected versions

1.*
1.6.47-1.1
1.6.48-1
1.6.49-1~exp1
1.6.50-1~exp1
1.6.50-1
1.6.50-1ubuntu0.1
1.6.50-1ubuntu0.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpng-dev",
            "binary_version": "1.6.50-1ubuntu0.4"
        },
        {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.50-1ubuntu0.4"
        },
        {
            "binary_name": "libpng16-16t64",
            "binary_version": "1.6.50-1ubuntu0.4"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8039-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2026-25646",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}