CVE-2026-107655
Cups: null pointer dereference via embedded job ticket comments allows remote denial of service
A flaw was found in CUPS. When processing embedded job ticket comments within documents, the service improperly handles specific IPP attributes, causing an unhandled null pointer dereference. An unauthenticated attacker permitted to submit jobs to a shared printer queue can send a crafted Internet Printing Protocol (IPP) request to crash the print daemon, resulting in a temporary Denial of Service (DoS) for all printing services.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Red Hat Hardened Images Red Hat cups-main
https://catalog.redhat.com/software/containers/ |
≥ 2.4.19-4.4.hum1; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 10 Red Hat cups
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 6 Red Hat cups
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unknown |
CNA: redhat |
| Red Hat Enterprise Linux 7 Red Hat cups
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat cups
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat cups
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 4.0 medium |
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | CNA: redhat |
Exploit evidence
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-58wv-9ffm-5w78
exploit · ADP: CISA-ADP
References
- https://access.redhat.com/errata/RHSA-2026:80679CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-107655CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2548399CNA: redhat · issue-tracking, x_refsource_REDHAT
- https://github.com/OpenPrinting/cups/commit/12237adCNA: redhat
- https://github.com/OpenPrinting/cups/commit/25d6830CNA: redhat
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-58wv-9ffm-5w78CNA: redhat
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-58wv-9ffm-5w78ADP: CISA-ADP · exploit
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