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Debian 11: DCMTK Critical Memory Corruption Threat CVE-2025-9732 DLA-4363-1

debian lts
Calendar Grey November 3, 2025
Dist Debian Esm H88
Multiple vulnerabilities fixed in DCMTK, impacting medical image processing and requiring urgent updates for Debian users.
Several vulnerabilities have been fixed in DCMTK, a collection of libraries and applications implementing large parts of the DICOM standard for medical images
Topics%20covered

Topics Covered

security advisory debian memory corruption application crash stack overflow medical images

Summary

CVE-2025-9732

Processing of an invalid DICOM image with a Photometric
Interpretation of "YBR_FULL" and a Planar Configuration of "1" where
the number of pixels stored does not match the expected number of pixels.
This may lead to memory corruption.

CVE-2022-4981

Various issues in the dcmqrscp configuration file parser that could cause
application crashes when reading a malformed configuration file, due to
insufficient checks of the input data.

CVE-2020-36855

Stack-based overflow in the dcmqrscp config parser.


For Debian 11 bullseye, these problems have been fixed in version
3.6.5-1+deb11u5.

We recommend that you upgrade your dcmtk packages.

For the detailed security status of dcmtk please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/dcmtk

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Severity
critical
Lowest
Low
Medium
High
Critical

Package: dcmtk
Version: 3.6.5-1+deb11u5
CVE ID: CVE-2020-36855 CVE-2022-4981 CVE-2025-9732
Debian Bug: 1113993

Topics%20covered

Topics Covered

security advisory debian memory corruption application crash stack overflow medical images

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