Executive Summary

This vulnerability exists in iccDEV, a set of libraries and tools for working with ICC color management profiles. Before version 2.3.1.6, a specially crafted ICC profile can cause a segmentation fault (SEGV) in the function CIccTagArray::Cleanup(). This happens due to misaligned member access or misaligned pointer loads, which leads to an invalid memory read and ultimately causes the process to crash when running the iccRoundTrip tool on a malicious profile.

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Impact Analysis

The vulnerability can cause a denial of service by crashing the process that handles ICC profiles, specifically when using the iccRoundTrip tool. This crash results from invalid memory access triggered by a maliciously crafted ICC profile. While it does not lead to data confidentiality or integrity loss, it can disrupt normal operations by causing unexpected process termination.

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Compliance Impact

The vulnerability CVE-2026-34535 causes a local denial of service by crashing the process handling ICC color profiles due to a segmentation fault. It does not impact confidentiality or integrity of data, as indicated by the CVSS metrics (Confidentiality: None, Integrity: None).

Because it does not lead to unauthorized data access or modification, this vulnerability is unlikely to directly affect compliance with data protection standards and regulations such as GDPR or HIPAA, which primarily focus on protecting personal data confidentiality and integrity.

However, the denial of service caused by this vulnerability could impact system availability, which may be a consideration under some regulatory frameworks depending on the context of use.

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Detection Guidance

This vulnerability manifests as a segmentation fault (SEGV) in the iccDEV tool iccRoundTrip when processing a specially crafted ICC profile. Detection involves running iccRoundTrip on suspicious or untrusted ICC profiles and observing if the process crashes.

Using sanitizers such as Undefined Behavior Sanitizer (UBSan) and Address Sanitizer (ASan) during testing can help detect misaligned pointer accesses and invalid reads that trigger the crash.

A practical detection approach is to execute the following command on a potentially malicious ICC profile:

• iccRoundTrip suspicious_profile.icc

If the process crashes with segmentation fault or sanitizer errors related to misaligned pointer loads or invalid memory reads, it indicates the presence of the vulnerability.

For more detailed debugging, running iccRoundTrip under sanitizers can be done by compiling iccDEV with UBSan and ASan enabled and then executing the tool on the profile to observe sanitizer reports.

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Mitigation Strategies

The vulnerability has been patched in iccDEV version 2.3.1.6. To mitigate this vulnerability, you should upgrade your iccDEV installation to version 2.3.1.6 or later.

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