# CVE-2017-7482: Integer overflow in kernel:

> An integer overflow in Linux kernel Kerberos 5 ticket decoding allows attackers to cause memory corruption and potentially escalate privileges.

- **Severity:** High 7.1 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H`)
- **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 Jul 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2017-7482, GHSA-2x6j-879g-gpqr, UBUNTU-CVE-2017-7482

## What is CVE-2017-7482?

CVE-2017-7482 is a high-severity vulnerability in Debian Debian Linux, published on 30 Jul 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel before version 4.12, Kerberos 5 tickets decoded when using the RXRPC keys incorrectly assumes the size of a field. This could lead to the size-remaining variable wrapping and the data pointer going over the end of the buffer. This could possibly lead to memory corruption and possible privilege escalation.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2017-7482?

It affects 3 products.


Products: Debian Debian Linux, Linux kernel, Redhat Enterprise Mrg.

## How do I fix CVE-2017-7482?

Apply the vendor's patch.

## Is CVE-2017-7482 being exploited?

There is no known exploitation of CVE-2017-7482 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-7482 and fix it if it is affected.

What it is: CVE-2017-7482 is a high-severity vulnerability in Debian Debian Linux, published on 30 Jul 2018. 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-2017-7482 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2017-7482/ (Markdown: https://insights.sbomify.com/CVE-2017-7482/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-7482
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-7482
- OSV: https://osv.dev/vulnerability/CVE-2017-7482

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-7482/
Summaries are generated and may contain mistakes; the official description above is the record.