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Fedora 42: RNP Critical Session Key Decryption Issue Fix 2025-7bef956026

fedora
Calendar Grey November 29, 2025
Dist Fedora Esm H88
Critical security update for Fedora 42's rnp fixes all-zero session key flaw allowing decryption of encrypted messages.
Version 0.18.1 Security Fixed critical issue where PKESK (public-key encrypted) session keys were generated as all-zero, allowing trivial decryption of messages encrypted with publ...

Summary

RNP is a set of OpenPGP (RFC4880) tools.

Update Information:

Version 0.18.1 Security Fixed critical issue where PKESK (public-key encrypted) session keys were generated as all-zero, allowing trivial decryption of messages encrypted with public keys only (CVE-2025-13470, CVE-2025-13402)

Change Log

* Fri Nov 21 2025 Remi Collet - 0.18.1-1 - update to 0.18.1 for CVE-2025-13402 - disable gpg check reported as https://github.com/rnpgp/rnp/issues/2375

References


[ 1 ] Bug #2415869 - CVE-2025-13402 rnp: RNP PKESK Session Keys Generated as All\u2011Zero [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2415869 [ 2 ] Bug #2417034 - CVE-2025-13470 rnp: RNP: Confidentiality compromise due to uninitialized symmetric session key in Public-Key Encrypted Session Key (PKESK) packets [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2417034

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-7bef956026' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
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Name: rnp
Product: Fedora 42
Version: 0.18.1
Release: 1.fc42
Summary: OpenPGP (RFC4880) tools

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