# CVE-2026-98871: crypto: ccp - Fix possible deadlock in SEV init failure path


- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 23 Oct 2026
- **Updated:** 23 Oct 2026
- **Also known as:** BELL-CVE-2026-98871, DEBIAN-CVE-2026-98871, GHSA-34hf-3mqj-6x9g, UBUNTU-CVE-2026-98871

## What is CVE-2026-98871?

CVE-2026-98871 is a vulnerability in Linux, published on 23 Oct 2026. 

### Official description

In the Linux kernel, the following vulnerability has been resolved:

crypto: ccp - Fix possible deadlock in SEV init failure path

__sev_platform_init_handle_init_ex_path() calls
rmp_mark_pages_firmware() with locked=false while the parent
function of init_ex_path already acquired the sev_cmd_mutex.
In the case of an RMPUPDATE failure for any page after the first, the cleanup
path would invoke reclaim pages which would result in a deadlock in
sev_do_cmd.

Pass locked=true to honor the lock status of the parent function.

## Which versions are affected by CVE-2026-98871?


## How do I fix CVE-2026-98871?

Upgrade to a fixed version.

## Is CVE-2026-98871 being exploited?

There is no known exploitation of CVE-2026-98871 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-98871 and fix it if it is affected.

What it is: CVE-2026-98871 is a vulnerability in Linux, published on 23 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-98871 in the wild and no public exploit code.

Affected product: 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-2026-98871/ (Markdown: https://insights.sbomify.com/CVE-2026-98871/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-98871
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-98871
- OSV: https://osv.dev/vulnerability/CVE-2026-98871

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-98871/
Summaries are generated and may contain mistakes; the official description above is the record.