DEBIAN-CVE-2026-47667
CImg Library is a C++ library for image processing. Prior to version 4.0.0 in `_load_analyze()`, the header_size field is read as an `unsigned int` from the first 4 bytes of an Analyze/NIfTI file and passed directly to `new unsigned char[header_size]` without being bounded against the actual file size. A value up to ~4 GB is accepted. If the subsequent `fread` returns `short` as it will for any malformed file), the function throws a `CImgIOException` and the allocated buffer is never freed. A 6-byte crafted file is sufficient to trigger an allocation of ~1.3 GB per call, with the full allocation leaked on every error path. The issue is reachable via `load_analyze()` and the generic `load()` when the file extension is .hdr, .img, or .nii. Version 4.0.0 fixes the issue.
DEBIAN-CVE-2026-47667
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-2026-47667
cimg
Source reference: /affected/0/package/name
- Affected versions
- 3.2.1+dfsg-1
Source reference:
/affected/0/versions3.2.1+dfsg-2Source reference:
/affected/0/versions3.5.0+dfsg-1Source reference:
/affected/0/versions3.5.2+dfsg-1Source reference:
/affected/0/versions3.5.2+dfsg-2Source reference:
/affected/0/versions4.0.4+dfsg-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
cimg
Source reference: /affected/1/package/name
- Affected versions
- 3.5.2+dfsg-1
Source reference:
/affected/1/versions3.5.2+dfsg-1+deb13u1Source reference:
/affected/1/versions3.5.2+dfsg-2Source reference:
/affected/1/versions4.0.4+dfsg-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
cimg
Source reference: /affected/2/package/name
- Affected versions
- 3.5.2+dfsg-1
Source reference:
/affected/2/versions3.5.2+dfsg-2Source reference:
/affected/2/versions - Fixed versions
- 4.0.4+dfsg-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": "cimg",
"purl": "pkg:deb/debian/cimg?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.2.1+dfsg-1",
"3.2.1+dfsg-2",
"3.5.0+dfsg-1",
"3.5.2+dfsg-1",
"3.5.2+dfsg-2",
"4.0.4+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47667.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "cimg",
"purl": "pkg:deb/debian/cimg?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.5.2+dfsg-1",
"3.5.2+dfsg-1+deb13u1",
"3.5.2+dfsg-2",
"4.0.4+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47667.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.4+dfsg-1"
}
]
}
],
"package": {
"name": "cimg",
"purl": "pkg:deb/debian/cimg?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.5.2+dfsg-1",
"3.5.2+dfsg-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47667.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56576 · Revision 1
- Added to Heist Feed
- Publisher date