Ubuntu USN · USN-8418-1

Crypt-SaltedHash vulnerability

Published: Wed, 10 Jun 2026 08:58

CVE-2026-47372

Summary

Crypt-SaltedHash incorrectly generated random numbers.

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.

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu bionic

libcrypt-saltedhash-perl→0.09-1ubuntu0.18.04.1~esm1apt_upgrade_esm
Fixed at 0.09-1ubuntu0.18.04.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-1ubuntu0.18.04.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
libcrypt-saltedhash-perl→0.09-1ubuntu0.18.04.1~esm1apt_upgrade_esm
Fixed at 0.09-1ubuntu0.18.04.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-1ubuntu0.18.04.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu focal

libcrypt-saltedhash-perl→0.09-1ubuntu0.20.04.1~esm1apt_upgrade_esm
Fixed at 0.09-1ubuntu0.20.04.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-1ubuntu0.20.04.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
libcrypt-saltedhash-perl→0.09-1ubuntu0.20.04.1~esm1apt_upgrade_esm
Fixed at 0.09-1ubuntu0.20.04.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-1ubuntu0.20.04.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu jammy

libcrypt-saltedhash-perl→0.09-1.1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 0.09-1.1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-1.1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
libcrypt-saltedhash-perl→0.09-1.1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 0.09-1.1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-1.1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu noble

libcrypt-saltedhash-perl→0.09-3ubuntu0.24.04.1~esm1apt_upgrade_esm
Fixed at 0.09-3ubuntu0.24.04.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-3ubuntu0.24.04.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
libcrypt-saltedhash-perl→0.09-3ubuntu0.24.04.1~esm1apt_upgrade_esm
Fixed at 0.09-3ubuntu0.24.04.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-3ubuntu0.24.04.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu questing

libcrypt-saltedhash-perl→0.09-3ubuntu0.25.10.1apt_upgrade
Standard apt upgrade. Install 0.09-3ubuntu0.25.10.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libcrypt-saltedhash-perl→0.09-3ubuntu0.25.10.1apt_upgrade
Standard apt upgrade. Install 0.09-3ubuntu0.25.10.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu resolute

libcrypt-saltedhash-perl→0.09-3ubuntu0.26.04.1~esm1apt_upgrade_esm
Fixed at 0.09-3ubuntu0.26.04.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-3ubuntu0.26.04.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
libcrypt-saltedhash-perl→0.09-3ubuntu0.26.04.1~esm1apt_upgrade_esm
Fixed at 0.09-3ubuntu0.26.04.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-3ubuntu0.26.04.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu xenial

libcrypt-saltedhash-perl→0.09-1ubuntu0.16.04.1~esm1apt_upgrade_esm
Fixed at 0.09-1ubuntu0.16.04.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-1ubuntu0.16.04.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
libcrypt-saltedhash-perl→0.09-1ubuntu0.16.04.1~esm1apt_upgrade_esm
Fixed at 0.09-1ubuntu0.16.04.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y libcrypt-saltedhash-perl=0.09-1ubuntu0.16.04.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

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