DEBIAN-CVE-2026-55480

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2026-55480
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55480.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-55480
Upstream
Published
2026-10-15T18:17:27Z
Modified
2026-10-23T17:47:44Z
Severity
  • 5.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
Summary
[none]
Details

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, copy_model() in scheduler/ipp.c creates a predictable TempDir/.ppd path in an lp-group-writable directory and opens it as root without O_EXCL or O_NOFOLLOW. Exploitation requires an lp-group process able to write that directory to predict the connection-derived name and plant a symlink before the root open, while a privileged add-printer or modify-printer operation using a model PPD triggers copy_model(). The reporter treats an existing lp foothold and the privileged operation as distinct prerequisites, while the maintainer assesses high privileges because installing the relevant filter or administering the printer requires root or print-administrator access. If the race succeeds, the root scheduler follows the symlink and truncates or overwrites a root-writable target with generated PPD data, compromising file integrity or availability. This issue is fixed in version 2.4.20.

References

Affected packages

Debian:12 / cups

Package

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

Affected ranges

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

Affected versions

2.*
2.4.2-3
2.4.2-3+deb12u1
2.4.2-3+deb12u2
2.4.2-3+deb12u3
2.4.2-3+deb12u4
2.4.2-3+deb12u5
2.4.2-3+deb12u6
2.4.2-3+deb12u7
2.4.2-3+deb12u8
2.4.2-3+deb12u9
2.4.2-4
2.4.2-5
2.4.2-6
2.4.7-1
2.4.7-1.1
2.4.7-1.2
2.4.7-2
2.4.7-3
2.4.10-1
2.4.10-2
2.4.10-3
2.4.10-4
2.4.14-1
2.4.15-1
2.4.16-1
2.4.17-1
2.4.18-1
2.4.20-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55480.json"

Debian:13 / cups

Package

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

Affected ranges

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

Affected versions

2.*
2.4.10-3
2.4.10-3+deb13u1
2.4.10-3+deb13u2
2.4.10-4
2.4.14-1
2.4.15-1
2.4.16-1
2.4.17-1
2.4.18-1
2.4.20-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55480.json"

Debian:14 / cups

Package

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

Affected ranges

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

Affected versions

2.*
2.4.10-3
2.4.10-4
2.4.14-1
2.4.15-1
2.4.16-1
2.4.17-1
2.4.18-1
2.4.20-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55480.json"