USN-8399-1

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Source
https://ubuntu.com/security/notices/USN-8399-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8399-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-8399-1
Upstream
Related
Published
2026-06-08T12:43:16Z
Modified
2026-06-08T19:04:15.750236243Z
Summary
pillow vulnerabilities
Details

It was discovered that Pillow incorrectly handled large glyph advance values in fonts. An attacker could possibly use this issue to cause Pillow to crash, resulting in a denial of service. (CVE-2026-42308)

It was discovered that Pillow incorrectly handled nested coordinate lists in certain APIs. An attacker could possibly use this issue to cause Pillow to crash, resulting in a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-42309)

It was discovered that Pillow incorrectly handled certain malformed PDF files. An attacker could possibly use this issue to cause Pillow to use excessive resources, leading to a denial of service. (CVE-2026-42310)

It was discovered that Pillow incorrectly handled certain malformed PSD files. An attacker could possibly use this issue to cause Pillow to crash, resulting in a denial of service, or to execute arbitrary code. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-42311)

References

Affected packages

Ubuntu:22.04:LTS / pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.0.1-1ubuntu0.4

Affected versions

8.*
8.1.2+dfsg-0.3
9.*
9.0.0-1
9.0.1-1
9.0.1-1build1
9.0.1-1ubuntu0.1
9.0.1-1ubuntu0.2
9.0.1-1ubuntu0.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "python3-pil",
            "binary_version": "9.0.1-1ubuntu0.4"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "9.0.1-1ubuntu0.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8399-1.json"
cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-42308",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-42310",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:22.04:LTS"
}

Ubuntu:24.04:LTS / pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
10.2.0-1ubuntu1.2

Affected versions

10.*
10.0.0-1
10.1.0-1
10.2.0-1
10.2.0-1build1
10.2.0-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "python3-pil",
            "binary_version": "10.2.0-1ubuntu1.2"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "10.2.0-1ubuntu1.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8399-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-42308",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-42310",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}

Ubuntu:25.10 / pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
11.3.0-1ubuntu1.3

Affected versions

11.*
11.1.0-5build1
11.3.0-1ubuntu1
11.3.0-1ubuntu1.1
11.3.0-1ubuntu1.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "python3-pil",
            "binary_version": "11.3.0-1ubuntu1.3"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "11.3.0-1ubuntu1.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8399-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2026-42308",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-42309",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-42310",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-42311",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}

Ubuntu:26.04:LTS / pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
12.1.1-2ubuntu1.2

Affected versions

11.*
11.3.0-1ubuntu1
11.3.0-1ubuntu2
12.*
12.0.0-1ubuntu1
12.1.1-1ubuntu1
12.1.1-2ubuntu1
12.1.1-2ubuntu1.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "python3-pil",
            "binary_version": "12.1.1-2ubuntu1.2"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "12.1.1-2ubuntu1.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8399-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:26.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-42308",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-42309",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-42310",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-42311",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}