Hi,

The following vulnerability was published for dcmtk.

CVE-2026-44034[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-44034
https://www.cve.org/CVERecord?id=CVE-2026-44034
[1] https://support.dcmtk.org/redmine/issues/1213
[2] https://github.com/DCMTK/dcmtk/commit/45469f3c30037e9c7159290e4bb74cd7b3b9ef1d

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore