Moderate Security Update for opencryptoki: Addressing Information Disclosure and Denial of Service Vulnerabilities
Summary
ALSA-2026:28256: Moderate: opencryptoki security update. Affects opencryptoki versions < 3.26.0-2.el9_8.2. Fixed in 3.26.0-2.el9_8.2. How to fix ↓
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Background
The opencryptoki package provides an implementation of the PKCS#11 API for IBM Cryptocards, including models like IBM 4764 and 4765. It supports various cryptographic hardware and includes a software token implementation for environments without hardware. The package facilitates secure cryptographic operations and is essential for applications relying on cryptographic services.
Vulnerability Detail
The vulnerability identified as CVE-2026-40253 allows for information disclosure and denial of service through malformed BER-encoded cryptographic objects. This flaw can be exploited by attackers to gain unauthorized access to sensitive information or disrupt service availability, posing significant risks to systems utilizing the affected opencryptoki packages.
How To Fix
Minimum fixed version
3.26.0-2.el9_8.2
This is the first release that contains the fix.
sudo dnf update opencryptokiTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can limit access to the opencryptoki services or implement network-level controls to mitigate the risk of exploitation until the packages are updated.
Conclusion
The opencryptoki package has a moderate vulnerability that can lead to information disclosure and denial of service. Users are advised to update their packages to the latest version to safeguard their systems. Regular monitoring and updates are essential for maintaining security.
See every vulnerability recorded for opencryptoki →
FAQ
opencryptoki is a software package that implements the PKCS#11 API for IBM Cryptocards, enabling secure cryptographic operations.
CVE-2026-40253 refers to a vulnerability in opencryptoki that allows for information disclosure and denial of service due to malformed cryptographic objects.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
The risks include unauthorized access to sensitive information and potential disruption of service, which can impact the overall security of systems using opencryptoki.
It is recommended to regularly check for updates and apply them promptly to mitigate vulnerabilities and enhance security.
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