{"id":"UBUNTU-CVE-2026-44038","details":"A global out-of-bounds read in the Huffman decoder of the bundled IJG JPEG libraries (dcmjpeg/libijg8, libijg12 and libijg16) of OFFIS DCMTK 3.7.0 allows an attacker to read memory beyond the extend_test[] and extend_offset[] tables, causing incorrectly decoded pixel data or a crash, via a DICOM file with a crafted JPEG stream whose Huffman table defines a difference category above 15. Huffman symbol values are not range-checked unless DCMTK is built with DCMTK_ENABLE_STRICT_HUFFMAN_TABLE_CHECK, which is disabled by default. dcmdjpeg and any application that decompresses JPEG DICOM images with DCMTK are affected. The issue is fixed in commit d6ae1bc8d5b9ae9c7300013c8c85cc2ea0fd8cf5.","modified":"2026-10-17T13:00:06.919346233Z","published":"2026-10-15T00:00:00Z","upstream":["CVE-2026-44038"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-44038"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-44038"},{"type":"REPORT","url":"https://support.dcmtk.org/redmine/issues/1221"},{"type":"REPORT","url":"https://github.com/DCMTK/dcmtk/commit/d6ae1bc8d5b9ae9c7300013c8c85cc2ea0fd8cf5"}],"affected":[{"package":{"name":"dcmtk","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/dcmtk?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.0-15.1","3.6.1~20150629-5","3.6.1~20150924-4","3.6.1~20150924-5","3.6.1~20150924-5ubuntu0.1~esm1","3.6.1~20150924-5ubuntu0.1~esm2","3.6.1~20150924-5ubuntu0.1~esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"dcmtk","binary_version":"3.6.1~20150924-5ubuntu0.1~esm3"},{"binary_version":"3.6.1~20150924-5ubuntu0.1~esm3","binary_name":"libdcmtk5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44038.json"}},{"package":{"name":"dcmtk","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/dcmtk?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-2","3.6.2-2build1","3.6.2-3","3.6.2-3build1","3.6.2-3build2","3.6.2-3build3","3.6.2-3ubuntu0.1~esm1","3.6.2-3ubuntu0.1~esm2","3.6.2-3ubuntu0.1~esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"dcmtk","binary_version":"3.6.2-3ubuntu0.1~esm3"},{"binary_version":"3.6.2-3ubuntu0.1~esm3","binary_name":"libdcmtk12"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44038.json"}},{"package":{"name":"dcmtk","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/dcmtk?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.4-2.1","3.6.4-2.1build1","3.6.4-2.1build2","3.6.4-2.1ubuntu0.1~esm1","3.6.4-2.1ubuntu0.1","3.6.4-2.1ubuntu0.1+esm1","3.6.4-2.1ubuntu0.2","3.6.4-2.1ubuntu0.2+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"dcmtk","binary_version":"3.6.4-2.1ubuntu0.2+esm1"},{"binary_name":"libdcmtk14","binary_version":"3.6.4-2.1ubuntu0.2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44038.json"}},{"package":{"name":"dcmtk","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/dcmtk?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.5-1","3.6.6-3ubuntu1","3.6.6-3ubuntu2","3.6.6-4","3.6.6-5","3.6.6-5ubuntu0.1~esm1","3.6.6-5ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.6.6-5ubuntu0.1~esm2","binary_name":"dcmtk"},{"binary_name":"libdcmtk16","binary_version":"3.6.6-5ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44038.json"}},{"package":{"name":"dcmtk","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/dcmtk?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.7-9","3.6.7-9.1build2","3.6.7-9.1build3","3.6.7-9.1build4","3.6.7-9.1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"dcmtk","binary_version":"3.6.7-9.1ubuntu0.1~esm1"},{"binary_name":"libdcmtk17t64","binary_version":"3.6.7-9.1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44038.json"}},{"package":{"name":"dcmtk","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/dcmtk?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.7.0+really3.6.9-1","3.7.0+really3.7.0-2","3.7.0+really3.7.0-5","3.7.0+really3.7.0-6","3.7.0+really3.7.0-7ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.7.0+really3.7.0-7ubuntu1","binary_name":"dcmtk"},{"binary_name":"dcmtk-data","binary_version":"3.7.0+really3.7.0-7ubuntu1"},{"binary_version":"3.7.0+really3.7.0-7ubuntu1","binary_name":"libdcmtk20"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44038.json"}},{"package":{"name":"dcmtk","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/dcmtk?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.9-5build1","3.6.9-6","3.7.0+really3.6.9-1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.7.0+really3.6.9-1","binary_name":"dcmtk"},{"binary_version":"3.7.0+really3.6.9-1","binary_name":"dcmtk-data"},{"binary_name":"libdcmtk19","binary_version":"3.7.0+really3.6.9-1"}]},"database_specific":{"source":"https://gith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