UBUNTU-CVE-2026-96641

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Source
https://ubuntu.com/security/CVE-2026-96641
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96641.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-96641
Upstream
Downstream
Related
Published
2026-10-21T21:20:00Z
Modified
2026-11-13T11:22:55Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Pillow is a Python imaging library. Prior to 13.0.0, PILfont text-width accumulation in src/_imaging.c checks positive glyph advances against INT_MAX but does not check negative advances against INT_MIN. Repeating a signed 16-bit advance of -32768 can therefore execute a signed C integer overflow in xsize += dx, producing a large positive width from a negative mathematical result. Applications that use getlength(), getsize(), or derived layout, quota, serialization, or allocation calculations can experience logic-integrity errors or resource consumption, while the high-level mask path commonly retains a decompression-bomb check. This issue is fixed in version 13.0.0.

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
0 Unknown introduced version / All previous versions are affected
Fixed
9.0.1-1ubuntu0.7

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
9.0.1-1ubuntu0.4
9.0.1-1ubuntu0.5
9.0.1-1ubuntu0.6

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "python3-pil",
            "binary_version": "9.0.1-1ubuntu0.7"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "9.0.1-1ubuntu0.7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96641.json"
Ubuntu:24.04:LTS
pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
10.2.0-1ubuntu1.5

Affected versions

10.*
10.0.0-1
10.1.0-1
10.2.0-1
10.2.0-1build1
10.2.0-1ubuntu1
10.2.0-1ubuntu1.2
10.2.0-1ubuntu1.3
10.2.0-1ubuntu1.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "python3-pil",
            "binary_version": "10.2.0-1ubuntu1.5"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "10.2.0-1ubuntu1.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96641.json"
Ubuntu:26.04:LTS
pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
12.1.1-2ubuntu1.5

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
12.1.1-2ubuntu1.2
12.1.1-2ubuntu1.3
12.1.1-2ubuntu1.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "python3-pil",
            "binary_version": "12.1.1-2ubuntu1.5"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "12.1.1-2ubuntu1.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96641.json"
Ubuntu:26.10
pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
12.3.0-1ubuntu2

Affected versions

12.*
12.1.1-2ubuntu1
12.3.0-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "python3-pil",
            "binary_version": "12.3.0-1ubuntu2"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "12.3.0-1ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96641.json"
Ubuntu:Pro:14.04:LTS
pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.3.0-1ubuntu3.4+esm6

Affected versions

2.*
2.2.1-1ubuntu2
2.2.1-2ubuntu1
2.2.1-3ubuntu2
2.2.1-3ubuntu3
2.2.1-3ubuntu4
2.2.1-3ubuntu6
2.3.0-1ubuntu1
2.3.0-1ubuntu2
2.3.0-1ubuntu3
2.3.0-1ubuntu3.2
2.3.0-1ubuntu3.3
2.3.0-1ubuntu3.4
2.3.0-1ubuntu3.4+esm1
2.3.0-1ubuntu3.4+esm2
2.3.0-1ubuntu3.4+esm3
2.3.0-1ubuntu3.4+esm4
2.3.0-1ubuntu3.4+esm5

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "python-imaging",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python-imaging-compat",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python-imaging-sane",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python-imaging-tk",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python-pil",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python-pil.imagetk",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python-sane",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python3-imaging",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python3-imaging-sane",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python3-imaging-tk",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python3-pil",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        },
        {
            "binary_name": "python3-sane",
            "binary_version": "2.3.0-1ubuntu3.4+esm6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96641.json"
Ubuntu:Pro:16.04:LTS
pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.1.2-0ubuntu1.6+esm4

Affected versions

2.*
2.9.0-1
3.*
3.0.0-1
3.0.0-1build1
3.1.0-1
3.1.1-1
3.1.2-0ubuntu1
3.1.2-0ubuntu1.1
3.1.2-0ubuntu1.3
3.1.2-0ubuntu1.4
3.1.2-0ubuntu1.5
3.1.2-0ubuntu1.6
3.1.2-0ubuntu1.6+esm1
3.1.2-0ubuntu1.6+esm2
3.1.2-0ubuntu1.6+esm3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "python-imaging",
            "binary_version": "3.1.2-0ubuntu1.6+esm4"
        },
        {
            "binary_name": "python-pil",
            "binary_version": "3.1.2-0ubuntu1.6+esm4"
        },
        {
            "binary_name": "python-pil.imagetk",
            "binary_version": "3.1.2-0ubuntu1.6+esm4"
        },
        {
            "binary_name": "python3-pil",
            "binary_version": "3.1.2-0ubuntu1.6+esm4"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "3.1.2-0ubuntu1.6+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96641.json"
Ubuntu:Pro:18.04:LTS
pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.1.0-1ubuntu0.8+esm3

Affected versions

4.*
4.1.1-3build2
4.3.0-2ubuntu1
5.*
5.0.0-1
5.1.0-1
5.1.0-1ubuntu0.2
5.1.0-1ubuntu0.3
5.1.0-1ubuntu0.4
5.1.0-1ubuntu0.5
5.1.0-1ubuntu0.6
5.1.0-1ubuntu0.7
5.1.0-1ubuntu0.8
5.1.0-1ubuntu0.8+esm1
5.1.0-1ubuntu0.8+esm2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "python-pil",
            "binary_version": "5.1.0-1ubuntu0.8+esm3"
        },
        {
            "binary_name": "python-pil.imagetk",
            "binary_version": "5.1.0-1ubuntu0.8+esm3"
        },
        {
            "binary_name": "python3-pil",
            "binary_version": "5.1.0-1ubuntu0.8+esm3"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "5.1.0-1ubuntu0.8+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96641.json"
Ubuntu:Pro:20.04:LTS
pillow

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
7.0.0-4ubuntu0.9+esm2

Affected versions

6.*
6.1.0-1
6.1.0-1build1
6.2.1-2
7.*
7.0.0-4
7.0.0-4build1
7.0.0-4ubuntu0.1
7.0.0-4ubuntu0.2
7.0.0-4ubuntu0.3
7.0.0-4ubuntu0.4
7.0.0-4ubuntu0.5
7.0.0-4ubuntu0.6
7.0.0-4ubuntu0.7
7.0.0-4ubuntu0.8
7.0.0-4ubuntu0.9
7.0.0-4ubuntu0.9+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "python3-pil",
            "binary_version": "7.0.0-4ubuntu0.9+esm2"
        },
        {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "7.0.0-4ubuntu0.9+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96641.json"
pillow-python2

Package

Name
pillow-python2
Purl
pkg:deb/ubuntu/pillow-python2?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

6.*
6.2.1-3~build1
6.2.1-3
6.2.1-3ubuntu0.1~esm1
6.2.1-3ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-pil",
            "binary_version": "6.2.1-3ubuntu0.1~esm2"
        },
        {
            "binary_name": "python-pil.imagetk",
            "binary_version": "6.2.1-3ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96641.json"