Description
OpenPrinting CUPS is an open source printing system. In versions 2.4.2 and prior, a heap buffer overflow vulnerability would allow a remote attacker to launch a denial of service (DoS) attack. A buffer overflow vulnerability in the function `format_log_line` could allow remote attackers to cause a DoS on the affected system. Exploitation of the vulnerability can be triggered when the configuration file `cupsd.conf` sets the value of `loglevel `to `DEBUG`. No known patches or workarounds exist at time of publication.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenPrinting | cups | <= 2.4.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | cups | 2.4.2-4 | — |
| Debian 13 | cups | 2.4.2-4 | — |
| Debian 12 | cups | 2.4.2-3+deb12u1 | — |
| Debian 10 | cups | 2.2.10-6+deb10u7 | DLA-3440-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | cups | 2.4.1op1-1ubuntu4.2 | USN-6128-1 |
| Ubuntu 20.04 LTS | cups | 2.3.1-9ubuntu1.3 | USN-6128-1 |
| Ubuntu 18.04 LTS | cups | 2.2.7-1ubuntu2.10 | USN-6128-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | cups | 2.1.3-4ubuntu0.11+esm2 | USN-6128-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | cups +7 | 1:2.3.3op2-21.el9 | RHSA-2023:6596 |
| RHEL 8 | cups +6 | 1:2.2.6-54.el8_9 | RHSA-2023:7165 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.8 EUS | cups +6 | 1:2.2.6-51.el8_8.3 | RHSA-2024:1409 |
| RHEL 8.6 EUS | cups +6 | 1:2.2.6-45.el8_6.4 | RHSA-2024:1101 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | cups +7 | 1:2.3.3op2-21.el9 | ALSA-2023:6596 |
| AlmaLinux 8 | cups +6 | 1:2.2.6-54.el8_9 | ALSA-2023:7165 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLES 15 SP4 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLES 15 SP3 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLES 15 SP2 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLES 15 SP1 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
Show 22 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | cups | 1.7.5-20.39.1 | SUSE-SU-2023:2346-1 |
| SLES 12 SP4 | cups | 1.7.5-20.39.1 | SUSE-SU-2023:2346-1 |
| SLES 12 SP2 | cups | 1.7.5-20.39.1 | SUSE-SU-2023:2346-1 |
| SLES for SAP 15 SP3 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLES for SAP 15 SP2 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLES for SAP 15 SP1 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLES for SAP 12 SP5 | cups | 1.7.5-20.39.1 | SUSE-SU-2023:2346-1 |
| SLES for SAP 12 SP4 | cups | 1.7.5-20.39.1 | SUSE-SU-2023:2346-1 |
| SLE Real Time 15 SP3 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLE Micro 6.0 | cups | 2.4.11-1.1 | SUSE-SU-2025:20090-1 |
| SLE Micro 5.4 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLE Micro 5.3 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLE Micro 5.2 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLE HPC 15 SP3 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLE HPC 15 SP2 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SLE HPC 15 SP1 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SUSE OpenStack Cloud Crowbar 9 | cups | 1.7.5-20.39.1 | SUSE-SU-2023:2346-1 |
| SUSE OpenStack Cloud 9 | cups | 1.7.5-20.39.1 | SUSE-SU-2023:2346-1 |
| SUSE Manager Server 4.2 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SUSE Manager Proxy 4.2 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SUSE Enterprise Storage 7.1 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| SUSE Enterprise Storage 7 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | cups | 2.4.2-5.1 | openSUSE-SU-2024:12975-1 |
| openSUSE Leap 15.5 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
| openSUSE Leap 15.4 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | cups | 2.2.7-150000.3.43.1 | SUSE-SU-2023:2347-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | cups | 2.4.2-r7 | — |
| Alpine v3.23 | cups | 2.4.2-r7 | — |
| Alpine v3.22 | cups | 2.4.2-r7 | — |
| Alpine v3.21 | cups | 2.4.2-r7 | — |
| Alpine v3.20 | cups | 2.4.2-r7 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | cups | 2.4.2-r7 | — |
| Alpine v3.18 | cups | 2.4.2-r7 | — |
| Alpine v3.17 | cups | 2.4.2-r2 | — |
| Alpine v3.16 | cups | 2.4.2-r1 | — |
| Alpine v3.15 | cups | 2.3.3-r7 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | cups +7 | 1:2.3.3op2-18.amzn2023.0.4 | ALAS2023-2023-215 |
| Amazon Linux 2 | cups +6 | 1:1.6.3-51.amzn2.0.2 | ALAS2-2023-2184 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | cups | 2.4.10-1 | — |
| Azure Linux 2 (CBL-Mariner) | cups | 2.3.3op2-7 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | cups +7 | 1:2.3.3op2-21.el9 | ELSA-2023-6596 |
| Oracle Linux 8 | cups +6 | 1:2.2.6-54.el8_9 | ELSA-2023-7165 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | cups | 2.4.3-r0 | — |
Advisories 20
- ALSA-2023:6596 Moderate: cups security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:7165 Moderate: cups security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2023-2031 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- RHSA-2024:1101 Red Hat Security Advisory: cups security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:6596 Red Hat Security Advisory: cups security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:7165 Red Hat Security Advisory: cups security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2024:1409 Red Hat Security Advisory: cups security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-6128-2 cups vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-6128-1 cups vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2025:20090-1 Security update for cups SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-3440-1 cups - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2023:2347-1 Security update for cups SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12975-1 cups-2.4.2-5.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-1349 CUPS: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Nov 6, 2025
- WID-SEC-2024-1086 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 19, 2025
- SUSE-SU-2023:2346-1 Security update for cups SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2023-7165 Moderate: cups security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 17, 2023
- ELSA-2023-6596 Moderate: cups security and bug fix update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 11, 2023
- ALAS2-2023-2184 Moderate: cups security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 8, 2023
- ALAS2023-2023-215 Moderate: cups security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jun 27, 2023