Medium
dcmtk — security advisory
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.
- Products
- dcmtk
- Affected 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, 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, 3.6.4-2.1, 3.6.4-2.1build1, 3.6.4-2.1build2, 3.6.4-2.1ubuntu0.1, 3.6.4-2.1ubuntu0.1+esm1, 3.6.4-2.1ubuntu0.1~esm1, 3.6.4-2.1ubuntu0.2, 3.6.4-2.1ubuntu0.2+esm1, 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, 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, 3.6.9-5build1, 3.6.9-6, 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
- Fixed versions
- Not specified
- CVEs
- CVE-2026-44034
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:12 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-44034
dcmtk
Fixed versions: Not specified
dcmtk
Fixed versions: Not specified
dcmtk
Fixed versions: Not specified
dcmtk
Fixed versions: Not specified
dcmtk
Fixed versions: Not specified
dcmtk
Fixed versions: Not specified
dcmtk
Fixed versions: Not specified
Complete source record
{
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"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-44034",
"method": "structured",
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"title": "UBUNTU-CVE-2026-44034",
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"modified": "2026-10-17T12:58:18.787169751Z",
"provider": "osv",
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"references": [
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"https://github.com/DCMTK/dcmtk/commit/45469f3c30037e9c7159290e4bb74cd7b3b9ef1d",
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"source_id": "core-osv",
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"published_at": "2026-10-08T13:17:00+00:00"
}