{"id":"UBUNTU-CVE-2026-44034","details":"A heap-based out-of-bounds read in DcmRLECodecDecoder::decodeFrame() in dcmdata/libsrc/dcrleccd.cc of OFFIS DCMTK 3.7.0 allows an attacker to read up to 63 bytes of adjacent heap memory, or cause a crash, via a crafted RLE Lossless DICOM file whose pixel data fragment is shorter than the 64-byte RLE header. The function copies 64 bytes without checking the fragment length, a check that the sibling function decode() already performs. Applications that decode RLE images frame by frame (for example, through DcmPixelData::getUncompressedFrame()) are affected. The dcmdrle command-line tool uses decode() and is not affected. The issue is fixed in commit 45469f3c30037e9c7159290e4bb74cd7b3b9ef1d.","modified":"2026-10-14T03:23:02.397825203Z","published":"2026-10-13T00:00:00Z","upstream":["CVE-2026-44034"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-44034"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-44034"},{"type":"REPORT","url":"https://github.com/DCMTK/dcmtk/commit/45469f3c30037e9c7159290e4bb74cd7b3b9ef1d"},{"type":"REPORT","url":"https://support.dcmtk.org/redmine/issues/1213"}],"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_version":"3.6.1~20150924-5ubuntu0.1~esm3","binary_name":"dcmtk"},{"binary_name":"libdcmtk5","binary_version":"3.6.1~20150924-5ubuntu0.1~esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44034.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_version":"3.6.2-3ubuntu0.1~esm3","binary_name":"dcmtk"},{"binary_name":"libdcmtk12","binary_version":"3.6.2-3ubuntu0.1~esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44034.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-2026-44034.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-2026-44034.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-2026-44034.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_name":"dcmtk","binary_version":"3.7.0+really3.6.9-1"},{"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://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44034.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}