USN-8318-1

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Source
https://ubuntu.com/security/notices/USN-8318-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8318-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8318-1
Upstream
Related
Published
2026-05-27T12:23:40Z
Modified
2026-05-27T15:47:45.400231327Z
Summary
libcaca vulnerability
Details

It was discovered that libcaca incorrectly handled certain malformed files. An attacker could use this issue to cause libcaca to crash, resulting in a denial of service, or possibly execute arbitrary code.

References

Affected packages

Ubuntu:22.04:LTS / libcaca

Package

Name
libcaca
Purl
pkg:deb/ubuntu/libcaca?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.99.beta19-2.2ubuntu4.2

Affected versions

0.*
0.99.beta19-2.2ubuntu2
0.99.beta19-2.2ubuntu3
0.99.beta19-2.2ubuntu4
0.99.beta19-2.2ubuntu4.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "0.99.beta19-2.2ubuntu4.2",
            "binary_name": "caca-utils"
        },
        {
            "binary_version": "0.99.beta19-2.2ubuntu4.2",
            "binary_name": "libcaca0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8318-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-42046",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:24.04:LTS / libcaca

Package

Name
libcaca
Purl
pkg:deb/ubuntu/libcaca?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.99.beta20-4ubuntu0.2

Affected versions

0.*
0.99.beta20-3build1
0.99.beta20-4
0.99.beta20-4build1
0.99.beta20-4build2
0.99.beta20-4ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "0.99.beta20-4ubuntu0.2",
            "binary_name": "caca-utils"
        },
        {
            "binary_version": "0.99.beta20-4ubuntu0.2",
            "binary_name": "libcaca0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8318-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-42046",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:25.10 / libcaca

Package

Name
libcaca
Purl
pkg:deb/ubuntu/libcaca?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.99.beta20-5ubuntu0.25.10.2

Affected versions

0.*
0.99.beta20-5
0.99.beta20-5ubuntu0.25.10.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "0.99.beta20-5ubuntu0.25.10.2",
            "binary_name": "caca-utils"
        },
        {
            "binary_version": "0.99.beta20-5ubuntu0.25.10.2",
            "binary_name": "libcaca0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8318-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2026-42046",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:26.04:LTS / libcaca

Package

Name
libcaca
Purl
pkg:deb/ubuntu/libcaca?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.99.beta20-6ubuntu2.1

Affected versions

0.*
0.99.beta20-5
0.99.beta20-6
0.99.beta20-6ubuntu1
0.99.beta20-6ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "0.99.beta20-6ubuntu2.1",
            "binary_name": "caca-utils"
        },
        {
            "binary_version": "0.99.beta20-6ubuntu2.1",
            "binary_name": "libcaca0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8318-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:26.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-42046",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}