# CVE-2005-0403: Use after free in n/a

> Local attackers can trigger a use-after-free in the kernel's TTY handling to cause a crash or potentially gain terminal access.

- **Severity:** High 7.2 (`AV:L/AC:L/Au:N/C:C/I:C/A:C`)
- **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:** 1 Sep 2005
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-h877-2mwm-jwf4

## What is CVE-2005-0403?

CVE-2005-0403 is a high-severity use after free vulnerability in Redhat Enterprise Linux, published on 1 Sep 2005. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

init_dev in tty_io.c in the Red Hat backport of NPTL to Red Hat Enterprise Linux 3 does not properly clear controlling tty's in multi-threaded applications, which allows local users to cause a denial of service (crash) and possibly gain tty access via unknown attack vectors that trigger an access of a pointer to a freed structure.

## Which versions are affected by CVE-2005-0403?

It affects 2 products.


Products: Redhat Enterprise Linux, Redhat Enterprise Linux Desktop.

## How do I fix CVE-2005-0403?

Apply the vendor's patch.

## Is CVE-2005-0403 being exploited?

There is no known exploitation of CVE-2005-0403 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Enterprise Linux

- [CVE-2018-14667](https://insights.sbomify.com/CVE-2018-14667/): Red Hat JBoss RichFaces Framework Expression Language Injection (critical 9.8, exploited in the wild)
- [CVE-2021-20325](https://insights.sbomify.com/CVE-2021-20325/): Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit (critical 9.8)
- [CVE-2018-25011](https://insights.sbomify.com/CVE-2018-25011/): Memory corruption in libwebp (critical 9.8)
- [CVE-2018-25014](https://insights.sbomify.com/CVE-2018-25014/): Other in libwebp (critical 9.8)
- [CVE-2014-3585](https://insights.sbomify.com/CVE-2014-3585/): Supply chain in redhat-upgrade-tool (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2005-0403 and fix it if it is affected.

What it is: CVE-2005-0403 is a high-severity use after free vulnerability in Redhat Enterprise Linux, published on 1 Sep 2005. 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-2005-0403 in the wild and no public exploit code.

Affected product: Redhat Enterprise 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-2005-0403/ (Markdown: https://insights.sbomify.com/CVE-2005-0403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2005-0403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2005-0403
- OSV: https://osv.dev/vulnerability/CVE-2005-0403

---
From sbomify Insights: https://insights.sbomify.com/CVE-2005-0403/
Summaries are generated and may contain mistakes; the official description above is the record.