Vulnerability/
https://seclists.org/oss-sec/2026/q3/627

https://seclists.org/oss-sec/2026/q3/627: libksba-1.8.1 fixes a possible CMS parser infinite loop

Q: Which parsing paths are affected?

The fix changes the CMS signed-data and enveloped-data parsing paths, specifically the functions that parse signed data part 2 and enveloped data part 1.

Q: What input condition triggers the issue?

The issue occurs when the CMS parser detects no progress while processing affected data. Before the fix, this condition could result in an infinite loop.

Q: Which release contains the fix?

libksba 1.8.1 contains the CMS parser fix. The change is commit 06720f9b16a172404f49089cbb6eb95e4344f562.

Published Aug 31, 2026

Updated

Affected Software

1 affected component

gnupg Libksba<1.8.1

Frequently Asked Questions

Which parsing paths are affected?

The fix changes the CMS signed-data and enveloped-data parsing paths, specifically the functions that parse signed data part 2 and enveloped data part 1.

What input condition triggers the issue?

The issue occurs when the CMS parser detects no progress while processing affected data. Before the fix, this condition could result in an infinite loop.

Which release contains the fix?

libksba 1.8.1 contains the CMS parser fix. The change is commit 06720f9b16a172404f49089cbb6eb95e4344f562.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.