# ALBA-2021:4055: nfs-utils bug fix and enhancement update

> An update to nfs-utils prevents home directory modification for rpc.gssd, addressing a bug fix and enhancement request.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not stated
- **Attackable:** Not stated
- **Victim action needed:** Not stated
- **Fix available:** Yes
- **Published:** 2 Nov 2021

## What is ALBA-2021:4055?

ALBA-2021:4055 is a vulnerability in libnfsidmap-devel, published on 2 Nov 2021. 

### Official description

The nfs-utils packages provide a daemon for the kernel Network File System
(NFS) server and related tools, which provides better performance than the
traditional Linux NFS server used by most users. These packages also
contain the mount.nfs, umount.nfs, and showmount programs.

Bug Fix(es) and Enhancement(s):

* RFE: Prevent $HOME modification for rpc.gssd with conditional flag
(BZ#1995593)

## Which versions are affected by ALBA-2021:4055?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `libnfsidmap-devel` | AlmaLinux:8 | All versions | 1:2.3.3-41.el8_4.3 |

## How do I fix ALBA-2021:4055?

Apply the vendor's patch.

## Is ALBA-2021:4055 being exploited?

There is no known exploitation of ALBA-2021:4055 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for ALBA-2021:4055 and fix it if it is affected.

What it is: ALBA-2021:4055 is a vulnerability in libnfsidmap-devel, published on 2 Nov 2021. 
Exploitation: There is no known exploitation of ALBA-2021:4055 in the wild and no public exploit code.

Affected product: libnfsidmap-devel. 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/ALBA-2021-4055/ (Markdown: https://insights.sbomify.com/ALBA-2021-4055/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/ALBA-2021:4055

---
From sbomify Insights: https://insights.sbomify.com/ALBA-2021-4055/
Summaries are generated and may contain mistakes; the official description above is the record.