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Gentoo: librnp High Weak Random Ending Generation GLSA-202511-07

librnp uses weak random number generation such that generated keys can be easily cracked.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202511-07 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: librnp: Weak random number generation Date: November 26, 2025 Bugs: #966299 ID: 202511-07 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== librnp uses weak random number generation such that generated keys can be easily cracked. Background ========== librnp is a high performance C++ OpenPGP library. Affected packages ================= Package Vulnerable Unaffected --------------- ------------ ------------ dev-util/librnp = 0.18.0 > = 0.18.1 Description =========== The affected librnp version generated weak session keys for its public key encryption (PKESK) mode. Impact ====== Messages encrypted using the affected librnp version might be readable by an attacker with just the public key. Workaround ========== There is no known workaround at this time. Resolution ========== All librnp users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =dev-util/librnp-0.18.1" If sensitive information was sent using e.g. Thunderbird (with USE=system-librnp, the default), it should be considered potentially viewable by an attacker. References ========== [ 1 ] CVE-2025-13470 https://nvd.nist.gov/vuln/detail/CVE-2025-13470 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202511-07 Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users'machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2025 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5 . librnp uses weak random number generation, risking encrypted messages. Users must upgrade to prevent exposure of sensitive information.. random number generation, librnp, Gentoo Linux, high severity, encryption. . Severity: Critical. LinuxSecurity.com Team

Nov 26, 2025 •Critical Gentoo