- What: Crypt-SaltedHash in Ubuntu generates weak salts due to poor random number generation.
- Impact: Could weaken cryptographic protections if salts are predictable.
Ubuntu Security Notices USN-8418-1 USN-8418-1: Crypt-SaltedHash vulnerability Publication date 10 June 2026 Overview Crypt-SaltedHash incorrectly generated random numbers. Releases 26.04 LTS 25.10 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Packages libcrypt-saltedhash-perl - module for handling salted hashes Details It was discovered that Crypt-SaltedHash incorrectly generated salts using a cryptographically weak pseudo-random number generator. An attacker could possibly use this issue to predict generated salts, leading to a weakening of cryptographic protections. It was discovered that Crypt-SaltedHash incorrectly generated salts using a cryptographically weak pseudo-random number generator. An attacker could possibly use this issue to predict generated salts, leading to a weakening of cryptographic protections. Update instructions In general, a standard system update will make all the necessary changes. Learn more about how to get the fixes. The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version 26.04 LTS resolute libcrypt-saltedhash-perl – 0.09-3ubuntu0.26.04.1~esm1 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 25.10 questing libcrypt-saltedhash-perl – 0.09-3ubuntu0.25.10.1 24.04 LTS noble libcrypt-saltedhash-perl – 0.09-3ubuntu0.24.04.1~esm1 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 22.04 LTS jammy libcrypt-saltedhash-perl – 0.09-1.1ubuntu0.1~esm1 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 20.04 LTS focal libcrypt-saltedhash-perl – 0.09-1ubuntu0.20.04.1~esm1 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 18.04 LTS bionic libcrypt-saltedhash-perl – 0.09-1ubuntu0.18.04.1~esm1 Ubuntu Pro Fix available with Ubuntu Pro via ESM Apps. A community fix might become publicly available in the future. 16.04 LTS xenial libcrypt-saltedhash-perl – 0.09-1ubuntu0.16.04.1~esm1 Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References CVE-2026-47372 CVE-2026-47372