# SUSE-SU-2025:3868-1: Security update for chrony

> A race condition in chronyc allows a local user to escalate privileges to root, requiring a patch for SUSE systems.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 30 Oct 2025

## What is SUSE-SU-2025:3868-1?

SUSE-SU-2025:3868-1 is a vulnerability in chrony, published on 30 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

This update for chrony fixes the following issues:

Security issues fixed:
  - Race condition during socket creation by chronyc allows privilege escalation from user chrony to root (bsc#1246544).
    
Other issues fixed:
  - Improve connection retry intervals when facing NTS-KE related issues (bsc#1213551).
    * nts: use shorter NTS-KE retry interval when network is down.
    * ntp: don't adjust poll interval when waiting for NTS-KE.

## Which versions are affected by SUSE-SU-2025:3868-1?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `chrony` | SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 4.1-5.12.1 |

## How do I fix SUSE-SU-2025:3868-1?

Apply the vendor's patch.

## Is SUSE-SU-2025:3868-1 being exploited?

There is no known exploitation of SUSE-SU-2025:3868-1 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for SUSE-SU-2025:3868-1 and fix it if it is affected.

What it is: SUSE-SU-2025:3868-1 is a vulnerability in chrony, published on 30 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of SUSE-SU-2025:3868-1 in the wild and no public exploit code.

Affected product: chrony. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/SUSE-SU-2025-3868-1/ (Markdown: https://insights.sbomify.com/SUSE-SU-2025-3868-1/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/SUSE-SU-2025:3868-1

---
From sbomify Insights: https://insights.sbomify.com/SUSE-SU-2025-3868-1/
Summaries are generated and may contain mistakes; the official description above is the record.