{"id":"UBUNTU-CVE-2025-11266","details":"An out-of-bounds write vulnerability exists in the Grassroots DICOM library (GDCM). The issue is triggered during parsing of a malformed DICOM file containing encapsulated PixelData fragments (compressed image data stored as multiple fragments). This vulnerability leads to a segmentation fault caused by an out-of-bounds memory access due to unsigned integer underflow in buffer indexing. It is exploitable via file input, simply opening a crafted malicious DICOM file is sufficient to trigger the crash, resulting in a denial-of-service condition.","modified":"2026-01-20T18:12:10.447442Z","published":"2025-12-12T21:15:00Z","upstream":["CVE-2025-11266"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-11266"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-11266"},{"type":"REPORT","url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsma-25-345-01.json"},{"type":"REPORT","url":"https://github.com/malaterre/GDCM/releases/tag/v3.2.2"},{"type":"REPORT","url":"https://www.cisa.gov/news-events/ics-medical-advisories/icsma-25-345-01"}],"affected":[{"package":{"name":"gdcm","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/gdcm@2.2.4-1.1ubuntu4+esm1?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.3-2ubuntu3","2.2.3-2ubuntu4","2.2.4-1.1ubuntu1","2.2.4-1.1ubuntu2","2.2.4-1.1ubuntu3","2.2.4-1.1ubuntu4","2.2.4-1.1ubuntu4+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"libgdcm-cil"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"libgdcm-java"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"libgdcm-tools"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"libgdcm2-dev"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"libgdcm2.2"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"libvtkgdcm-cil"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"libvtkgdcm-java"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"libvtkgdcm-tools"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"libvtkgdcm2-dev"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"libvtkgdcm2.2"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"php5-gdcm"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"php5-vtkgdcm"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"python-gdcm"},{"binary_version":"2.2.4-1.1ubuntu4+esm1","binary_name":"python-vtkgdcm"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11266.json"}},{"package":{"name":"gdcm","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/gdcm@2.6.3-3ubuntu3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.4-4","2.4.4-4build1","2.4.4-4ubuntu1","2.6.1-3","2.6.2-1","2.6.2-2","2.6.2-3","2.6.3-1","2.6.3-1ubuntu1","2.6.3-2ubuntu1","2.6.3-3ubuntu1","2.6.3-3ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_version":"2.6.3-3ubuntu3","binary_name":"libgdcm-cil"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"libgdcm-java"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"libgdcm-tools"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"libgdcm2-dev"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"libgdcm2.6"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"libvtkgdcm-cil"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"libvtkgdcm-java"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"libvtkgdcm-tools"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"libvtkgdcm2-dev"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"libvtkgdcm2.6"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"python-gdcm"},{"binary_version":"2.6.3-3ubuntu3","binary_name":"python-vtkgdcm"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11266.json"}},{"package":{"name":"gdcm","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/gdcm@2.8.4-1build2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.2-3build1","2.8.3-1","2.8.4-1","2.8.4-1build2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.8.4-1build2","binary_name":"libgdcm-cil"},{"binary_version":"2.8.4-1build2","binary_name":"libgdcm-java"},{"binary_version":"2.8.4-1build2","binary_name":"libgdcm-tools"},{"binary_version":"2.8.4-1build2","binary_name":"libgdcm2-dev"},{"binary_version":"2.8.4-1build2","binary_name":"libgdcm2.8"},{"binary_version":"2.8.4-1build2","binary_name":"libvtkgdcm-cil"},{"binary_version":"2.8.4-1build2","binary_name":"libvtkgdcm-java"},{"binary_version":"2.8.4-1build2","binary_name":"libvtkgdcm-tools"},{"binary_version":"2.8.4-1build2","binary_name":"libvtkgdcm2-dev"},{"binary_version":"2.8.4-1build2","binary_name":"libvtkgdcm2.8"},{"binary_version":"2.8.4-1build2","binary_name":"python-gdcm"},{"binary_version":"2.8.4-1build2","binary_name":"python-vtkgdcm"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11266.json"}},{"package":{"name":"gdcm","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/gdcm@3.0.5-1.1ubuntu2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.8-9ubuntu4","2.8.8-9ubuntu5","3.0.4-2","3.0.4-2build1","3.0.4-2ubuntu1","3.0.5-1ubuntu1","3.0.5-1.1ubuntu1","3.0.5-1.1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