# CVE-2026-107565: Luksmeta: incomplete gap-boundary and overlap checks in luks1 metadata allocator allow data corruption

> A local attacker with administrative privileges can corrupt LUKS encrypted data or metadata due to flawed boundary checks in luksmeta.

- **Severity:** Medium 5.1 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Oct 2026
- **Updated:** 8 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-107565, GHSA-vwc5-xqph-7vp5, UBUNTU-CVE-2026-107565

## What is CVE-2026-107565?

CVE-2026-107565 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 8 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A flaw was found in luksmeta. A local attacker with administrative privileges can cause data corruption when saving metadata to a Linux Unified Key Setup (LUKS) device. Due to incorrect boundary calculations and flawed overlap detection, new metadata entries can be written beyond available free space or over existing records. This issue can corrupt stored encrypted payload data or existing metadata, potentially rendering the affected data inaccessible.

Weakness: CWE-1284 (Improper Validation of Specified Quantity in Input)

## Which versions are affected by CVE-2026-107565?


## How do I fix CVE-2026-107565?

No fix has been published for CVE-2026-107565 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-107565 being exploited?

There is no known exploitation of CVE-2026-107565 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-107565 and fix it if it is affected.

What it is: CVE-2026-107565 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 8 Oct 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 CVE-2026-107565 in the wild and no public exploit code.

Affected product: Red Hat Enterprise Linux 10. 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/CVE-2026-107565/ (Markdown: https://insights.sbomify.com/CVE-2026-107565/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-107565
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-107565
- OSV: https://osv.dev/vulnerability/CVE-2026-107565

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-107565/
Summaries are generated and may contain mistakes; the official description above is the record.