DEBIAN-CVE-2026-47667

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Source
https://security-tracker.debian.org/tracker/CVE-2026-47667
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47667.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-47667
Upstream
Published
2026-07-21T20:17:01Z
Modified
2026-09-14T17:03:41Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:12 / cimg

Package

Name
cimg
Purl
pkg:deb/debian/cimg?arch=source&distro=bookworm

Affected ranges

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

Affected versions

3.*
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.*
4.0.4+dfsg-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47667.json"

Debian:13 / cimg

Package

Name
cimg
Purl
pkg:deb/debian/cimg?arch=source&distro=trixie

Affected ranges

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

Affected versions

3.*
3.5.2+dfsg-1
3.5.2+dfsg-1+deb13u1
3.5.2+dfsg-2
4.*
4.0.4+dfsg-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47667.json"

Debian:14 / cimg

Package

Name
cimg
Purl
pkg:deb/debian/cimg?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.0.4+dfsg-1

Affected versions

3.*
3.5.2+dfsg-1
3.5.2+dfsg-2

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47667.json"