# ALBA-2026:47115: None: coreutils bug fix and enhancement update

> A stack overflow in the unexpand utility can cause a denial of service when processing large tab sizes.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 28 Jul 2026

## What is ALBA-2026:47115?

ALBA-2026:47115 is a denial of service vulnerability in coreutils, published on 28 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The coreutils packages contain the GNU Core Utilities and represent a combination of the previously used GNU fileutils, sh-utils, and textutils packages.  

Bug Fix(es) and Enhancement(s):  

  * Fix execution of the downstream tests in coreutils-df-direct.patch and coreutils-i18n.patch [almalinux-8.10.z] (JIRA:AlmaLinux-151533)
  * unexpand: stack overflow with large tabsizes [almalinux-8.10.z] (JIRA:AlmaLinux-182699)

## Which versions are affected by ALBA-2026:47115?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `coreutils` | AlmaLinux:8 | All versions | 8.30-20.el8_10 |
| `coreutils-common` | AlmaLinux:8 | All versions | 8.30-20.el8_10 |
| `coreutils-single` | AlmaLinux:8 | All versions | 8.30-20.el8_10 |

## How do I fix ALBA-2026:47115?

Apply the vendor's patch.

## Is ALBA-2026:47115 being exploited?

There is no known exploitation of ALBA-2026:47115 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for ALBA-2026:47115 and fix it if it is affected.

What it is: ALBA-2026:47115 is a denial of service vulnerability in coreutils, published on 28 Jul 2026. 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 ALBA-2026:47115 in the wild and no public exploit code.

Affected product: coreutils. 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-2026-47115/ (Markdown: https://insights.sbomify.com/ALBA-2026-47115/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/ALBA-2026:47115

---
From sbomify Insights: https://insights.sbomify.com/ALBA-2026-47115/
Summaries are generated and may contain mistakes; the official description above is the record.