# CVE-2024-31142: x86: Incorrect logic for BTC/SRSO mitigations

> A logic error in Xen hypervisor prevents proper application of Branch Type Confusion and Speculative Return Stack Overflow mitigations, allowing bypass of security protections.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 16 May 2024
- **Updated:** 4 Nov 2025
- **Also known as:** ALPINE-CVE-2024-31142, DEBIAN-CVE-2024-31142, GHSA-g7qc-r5p9-r36r, UBUNTU-CVE-2024-31142

## What is CVE-2024-31142?

CVE-2024-31142 is a high-severity vulnerability in Fedoraproject Fedora, published on 16 May 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Because of a logical error in XSA-407 (Branch Type Confusion), the
mitigation is not applied properly when it is intended to be used.
XSA-434 (Speculative Return Stack Overflow) uses the same
infrastructure, so is equally impacted.

For more details, see:
  https://xenbits.xen.org/xsa/advisory-407.html
  https://xenbits.xen.org/xsa/advisory-434.html

Weakness: CWE-693 (Protection Mechanism Failure)

## Which versions are affected by CVE-2024-31142?

It affects 2 products.


Products: Fedoraproject Fedora, Xen Xen.

## How do I fix CVE-2024-31142?

Apply the vendor's patch.

## Is CVE-2024-31142 being exploited?

There is no known exploitation of CVE-2024-31142 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild)
- [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-31142 and fix it if it is affected.

What it is: CVE-2024-31142 is a high-severity vulnerability in Fedoraproject Fedora, published on 16 May 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-31142 in the wild and no public exploit code.

Affected product: Fedoraproject Fedora. 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-2024-31142/ (Markdown: https://insights.sbomify.com/CVE-2024-31142/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-31142
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-31142
- OSV: https://osv.dev/vulnerability/CVE-2024-31142

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-31142/
Summaries are generated and may contain mistakes; the official description above is the record.