{"id":"UBUNTU-CVE-2026-34979","details":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.","modified":"2026-04-22T20:37:36.812326Z","published":"2026-04-03T22:16:00Z","upstream":["CVE-2026-34979"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-34979"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-34979"},{"type":"REPORT","url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-6qxf-7jx6-86fh"}],"affected":[{"package":{"name":"cups","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/cups@2.1.3-4ubuntu0.11+esm12?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.0-4ubuntu3","2.1.0-5","2.1.0-6","2.1.0-6ubuntu1","2.1.0-7","2.1.2-1","2.1.2-2","2.1.3-1","2.1.3-1build1","2.1.3-3","2.1.3-4","2.1.3-4ubuntu0.2","2.1.3-4ubuntu0.3","2.1.3-4ubuntu0.4","2.1.3-4ubuntu0.5","2.1.3-4ubuntu0.6","2.1.3-4ubuntu0.7","2.1.3-4ubuntu0.8","2.1.3-4ubuntu0.9","2.1.3-4ubuntu0.10","2.1.3-4ubuntu0.11","2.1.3-4ubuntu0.11+esm1","2.1.3-4ubuntu0.11+esm2","2.1.3-4ubuntu0.11+esm3","2.1.3-4ubuntu0.11+esm4","2.1.3-4ubuntu0.11+esm5","2.1.3-4ubuntu0.11+esm6","2.1.3-4ubuntu0.11+esm7","2.1.3-4ubuntu0.11+esm8","2.1.3-4ubuntu0.11+esm9","2.1.3-4ubuntu0.11+esm11","2.1.3-4ubuntu0.11+esm12"],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"cups"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"cups-bsd"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"cups-client"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"cups-common"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"cups-core-drivers"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"cups-daemon"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"cups-ipp-utils"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"cups-ppdc"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"cups-server-common"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"libcups2"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"libcupscgi1"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"libcupsimage2"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"libcupsmime1"},{"binary_version":"2.1.3-4ubuntu0.11+esm12","binary_name":"libcupsppdc1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34979.json"}},{"package":{"name":"cups","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/cups@2.2.7-1ubuntu2.10+esm10?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.4-7ubuntu2","2.2.5-2","2.2.6-2","2.2.6-3","2.2.6-4","2.2.6-5","2.2.7-1ubuntu1","2.2.7-1ubuntu2","2.2.7-1ubuntu2.1","2.2.7-1ubuntu2.2","2.2.7-1ubuntu2.3","2.2.7-1ubuntu2.4","2.2.7-1ubuntu2.5","2.2.7-1ubuntu2.6","2.2.7-1ubuntu2.7","2.2.7-1ubuntu2.8","2.2.7-1ubuntu2.9","2.2.7-1ubuntu2.10","2.2.7-1ubuntu2.10+esm1","2.2.7-1ubuntu2.10+esm2","2.2.7-1ubuntu2.10+esm3","2.2.7-1ubuntu2.10+esm4","2.2.7-1ubuntu2.10+esm5","2.2.7-1ubuntu2.10+esm6","2.2.7-1ubuntu2.10+esm7","2.2.7-1ubuntu2.10+esm9","2.2.7-1ubuntu2.10+esm10"],"ecosystem_specific":{"binaries":[{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"cups"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"cups-bsd"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"cups-client"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"cups-common"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"cups-core-drivers"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"cups-daemon"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"cups-ipp-utils"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"cups-ppdc"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"cups-server-common"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"libcups2"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"libcupscgi1"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"libcupsimage2"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"libcupsmime1"},{"binary_version":"2.2.7-1ubuntu2.10+esm10","binary_name":"libcupsppdc1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34979.json"}},{"package":{"name":"cups","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/cups@2.3.1-9ubuntu1.9+esm4?arch=source&distro=esm-infra/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.12-2ubuntu1","2.3.0-6","2.3.0-7","2.3.0-7ubuntu1","2.3.1-1ubuntu1","2.3.1-2","2.3.1-4","2.3.1-7","2.3.1-9ubuntu1","2.3.1-9ubuntu1.1","2.3.1-9ubuntu1.2","2.3.1-9ubuntu1.3","2.3.1-9ubuntu1.4","2.3.1-9ubuntu1.5","2.3.1-9ubuntu1.6","2.3.1-9ubuntu1.7","2.3.1-9ubuntu1.8","2.3.1-9ubuntu1.9","2.3.1-9ubuntu1.9+esm1","2.3.1-9ubuntu1.9+esm3","2.3.1-9ubuntu1.9+esm4"],"ecosystem_specific":{"binaries":[{"binary_version":"2.3.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