CVE-2025-32463: Testing Sudo Chroot Privilege Escalation Vulnerability
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How to Update Sudo to Fix CVE-2025-32463
Need to update sudo to patch the critical CVE-2025-32463 privilege escalation vulnerability? Here’s how to update sudo on different Linux distributions.
The vulnerable versions are 1.9.14 through 1.9.17. You need sudo 1.9.17p1 or later.
🔍 Step 1: Check Current Sudo Version
First, check what version you’re currently running:
🐧 Ubuntu/Debian Systems
Update sudo using the apt package manager:
For Ubuntu 24.04 and newer, you can also use:
🎩 Red Hat/CentOS/Fedora Systems
For Fedora (using dnf):
For RHEL/CentOS 8+ (using dnf):
For RHEL/CentOS 7 (using yum):
🦎 SUSE/openSUSE Systems
🏔️ Alpine Linux
🏗️ Arch Linux
📦 Manual Installation (If Package Manager Fails)
If your distribution doesn’t have the latest version available, you can compile from source:
✅ Step 2: Verify the Update
After updating, confirm you have the patched version:
🔄 Step 3: Restart Services (If Needed)
In most cases, sudo updates don’t require a restart, but if you want to be safe:
⚠️ Important Notes
- Backup first: Always backup your
/etc/sudoersfile before major updates - Test after update: Verify sudo functionality works correctly after updating
- Multiple sessions: Keep an active root session open while updating, just in case
- Container environments: Update base images and rebuild containers
🚨 Emergency Recovery
If sudo breaks after update:
📋 Verification Checklist
- ✅ Sudo version is 1.9.17p1 or later
- ✅ Basic sudo commands work (sudo whoami)
- ✅ Sudoers file syntax is valid (sudo visudo -c)
- ✅ CVE-2025-32463 test fails (if you ran it before)
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