# nvme: add missing SRCU grace period in error path

CVE record · `CVE-2026-89972`

- **Identifiers:** `CVE-2026-89972`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `ed754e5deeb17f4e675c84e4b6c640cc7344e498 to before 037e71058e8a59568db72015d4386f54e54dff77` (git)
  - affected: `ed754e5deeb17f4e675c84e4b6c640cc7344e498 to before 7f180cef9f3421ece85c43bfdc326ce5875845bb` (git)
  - affected: `ed754e5deeb17f4e675c84e4b6c640cc7344e498 to before da710ec2a70a85de73afd4f7869b234fd9ede49e` (git)
  - affected: `ed754e5deeb17f4e675c84e4b6c640cc7344e498 to before 3868476cd39161f18720582df17a1b621e805b5d` (git)
  - affected: `ed754e5deeb17f4e675c84e4b6c640cc7344e498 to before 0d4735418512ef825176726eaaa8bd6a35f6b46d` (git)
  - affected: `ed754e5deeb17f4e675c84e4b6c640cc7344e498 to before d663944dbad81bb0e3635d7090db4713e6300858` (git)
  - affected: `ed754e5deeb17f4e675c84e4b6c640cc7344e498 to before 76023560d60f10b4f808941163aa2975f1631683` (git)
  - affected: `ed754e5deeb17f4e675c84e4b6c640cc7344e498 to before ef248d5de4469fb6bbaf8dbe0c4c47800080d648` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.15`
  - unaffected: `before 4.15` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> The Linux kernel NVMe driver (nvme) is affected from 4.15 until the fixed stable releases. In an error path during namespace allocation, a namespace can be freed while a concurrent multipath reader still holds a reference to it. The source gives few details on what an attacker needs. Upgrade to Linux 5.10.273, 5.15.224, 6.1.191, 6.6.160, or a later stable release in the same series.

Written 12 Nov 2026.

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 9.8 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0076, the 55th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89972](https://www.cve.org/CVERecord?id=CVE-2026-89972)
- [NVD: CVE-2026-89972](https://nvd.nist.gov/vuln/detail/CVE-2026-89972)

### References from the CNA

- <https://git.kernel.org/stable/c/037e71058e8a59568db72015d4386f54e54dff77>
- <https://git.kernel.org/stable/c/7f180cef9f3421ece85c43bfdc326ce5875845bb>
- <https://git.kernel.org/stable/c/da710ec2a70a85de73afd4f7869b234fd9ede49e>
- <https://git.kernel.org/stable/c/3868476cd39161f18720582df17a1b621e805b5d>
- <https://git.kernel.org/stable/c/0d4735418512ef825176726eaaa8bd6a35f6b46d>
- <https://git.kernel.org/stable/c/d663944dbad81bb0e3635d7090db4713e6300858>
- <https://git.kernel.org/stable/c/76023560d60f10b4f808941163aa2975f1631683>
- <https://git.kernel.org/stable/c/ef248d5de4469fb6bbaf8dbe0c4c47800080d648>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-89972>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89972/>. Everything for agents: <https://agentprime.io/llms.txt>.