DEBIAN-CVE-2026-59197
Pillow is a Python imaging library. Prior to 12.3.0, Pillow's public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.
DEBIAN-CVE-2026-59197
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-59197
pillow
Source reference: /affected/0/package/name
- Affected versions
- 10.0.0-1
Source reference:
/affected/0/versions10.1.0-1Source reference:
/affected/0/versions10.2.0-1Source reference:
/affected/0/versions10.3.0-1Source reference:
/affected/0/versions10.3.0-2Source reference:
/affected/0/versions10.4.0-1Source reference:
/affected/0/versions10.4.0-1.1Source reference:
/affected/0/versions11.1.0-1Source reference:
/affected/0/versions11.1.0-2Source reference:
/affected/0/versions11.1.0-3Source reference:
/affected/0/versions11.1.0-4Source reference:
/affected/0/versions11.1.0-5Source reference:
/affected/0/versions11.2.1-1Source reference:
/affected/0/versions11.3.0-1Source reference:
/affected/0/versions12.0.0-1Source reference:
/affected/0/versions12.1.0-1Source reference:
/affected/0/versions12.1.1-1Source reference:
/affected/0/versions12.1.1-2Source reference:
/affected/0/versions12.2.0-1Source reference:
/affected/0/versions12.3.0-1Source reference:
/affected/0/versions13.0.0-1Source reference:
/affected/0/versions9.4.0-1.1Source reference:
/affected/0/versions9.4.0-1.1+deb12u1Source reference:
/affected/0/versions9.5.0-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
pillow
Source reference: /affected/1/package/name
- Affected versions
- 11.1.0-5
Source reference:
/affected/1/versions11.1.0-5+deb13u1Source reference:
/affected/1/versions11.1.0-5+deb13u2Source reference:
/affected/1/versions11.1.0-5+deb13u3Source reference:
/affected/1/versions11.1.0-5+deb13u4Source reference:
/affected/1/versions11.2.1-1Source reference:
/affected/1/versions11.3.0-1Source reference:
/affected/1/versions12.0.0-1Source reference:
/affected/1/versions12.1.0-1Source reference:
/affected/1/versions12.1.1-1Source reference:
/affected/1/versions12.1.1-2Source reference:
/affected/1/versions12.2.0-1Source reference:
/affected/1/versions12.3.0-1Source reference:
/affected/1/versions13.0.0-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
pillow
Source reference: /affected/2/package/name
- Affected versions
- 11.1.0-5
Source reference:
/affected/2/versions11.2.1-1Source reference:
/affected/2/versions11.3.0-1Source reference:
/affected/2/versions12.0.0-1Source reference:
/affected/2/versions12.1.0-1Source reference:
/affected/2/versions12.1.1-1Source reference:
/affected/2/versions12.1.1-2Source reference:
/affected/2/versions12.2.0-1Source reference:
/affected/2/versions - Fixed versions
- 12.3.0-1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "pillow",
"purl": "pkg:deb/debian/pillow?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"10.0.0-1",
"10.1.0-1",
"10.2.0-1",
"10.3.0-1",
"10.3.0-2",
"10.4.0-1",
"10.4.0-1.1",
"11.1.0-1",
"11.1.0-2",
"11.1.0-3",
"11.1.0-4",
"11.1.0-5",
"11.2.1-1",
"11.3.0-1",
"12.0.0-1",
"12.1.0-1",
"12.1.1-1",
"12.1.1-2",
"12.2.0-1",
"12.3.0-1",
"13.0.0-1",
"9.4.0-1.1",
"9.4.0-1.1+deb12u1",
"9.5.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59197.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "pillow",
"purl": "pkg:deb/debian/pillow?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"11.1.0-5",
"11.1.0-5+deb13u1",
"11.1.0-5+deb13u2",
"11.1.0-5+deb13u3",
"11.1.0-5+deb13u4",
"11.2.1-1",
"11.3.0-1",
"12.0.0-1",
"12.1.0-1",
"12.1.1-1",
"12.1.1-2",
"12.2.0-1",
"12.3.0-1",
"13.0.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59197.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "12.3.0-1"
}
]
}
],
"package": {
"name": "pillow",
"purl": "pkg:deb/debian/pillow?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"11.1.0-5",
"11.2.1-1",
"11.3.0-1",
"12.0.0-1",
"12.1.0-1",
"12.1.1-1",
"12.1.1-2",
"12.2.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59197.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58017 · Revision 1
- Added to Heist Feed
- Publisher date