# md/raid1: create serial pool adding rdev to array with serialize_policy=1

CVE record · `CVE-2026-90385`

- **Identifiers:** `CVE-2026-90385`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:09 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.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `69b00b5bb23552d43e8bbed73ef6624604bb94a2 to before 6ea458171bed2b706dc7bcd80b15356c0e9ed718` (git)
  - affected: `69b00b5bb23552d43e8bbed73ef6624604bb94a2 to before 0b187e14dab458d54425fc400f1e1e8d481d9bcf` (git)
  - affected: `69b00b5bb23552d43e8bbed73ef6624604bb94a2 to before f9e4364449f7ca6917f3599eb32064dba5b7b147` (git)
  - affected: `69b00b5bb23552d43e8bbed73ef6624604bb94a2 to before 37f11973c3eb72a5eb061082cad529bb6939c24f` (git)
  - affected: `69b00b5bb23552d43e8bbed73ef6624604bb94a2 to before c02d675e81468003e4f2253b616c53729070d712` (git)
  - affected: `69b00b5bb23552d43e8bbed73ef6624604bb94a2 to before 140234b2380ffb8ffb0cfc46fee0e822f43adef7` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.6`
  - unaffected: `before 5.6` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 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's md/raid1 component crashes with a kernel oops when a device is added to an existing RAID1 array with serialize_policy set to 1. The source gives few details on what an attacker would need. Upgrade to 6.1.191, 6.6.160, 6.12.110, or 6.18.52, or a later release in those 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 10th 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90385](https://www.cve.org/CVERecord?id=CVE-2026-90385)
- [NVD: CVE-2026-90385](https://nvd.nist.gov/vuln/detail/CVE-2026-90385)

### References from the CNA

- <https://git.kernel.org/stable/c/6ea458171bed2b706dc7bcd80b15356c0e9ed718>
- <https://git.kernel.org/stable/c/0b187e14dab458d54425fc400f1e1e8d481d9bcf>
- <https://git.kernel.org/stable/c/f9e4364449f7ca6917f3599eb32064dba5b7b147>
- <https://git.kernel.org/stable/c/37f11973c3eb72a5eb061082cad529bb6939c24f>
- <https://git.kernel.org/stable/c/c02d675e81468003e4f2253b616c53729070d712>
- <https://git.kernel.org/stable/c/140234b2380ffb8ffb0cfc46fee0e822f43adef7>

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-2026-90385>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90385/>. Everything for agents: <https://agentprime.io/llms.txt>.