# null_blk: serialize configfs attribute stores with the lock

CVE record · `CVE-2026-90185`

- **Identifiers:** `CVE-2026-90185`
- **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:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:07 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: `45919fbfe1c487c17ea1d198534339a5e8abeae3 to before 8e839ed5210399a0330a8a6c5885c1d40a537c6d` (git)
  - affected: `45919fbfe1c487c17ea1d198534339a5e8abeae3 to before 88d806d0e1d36246208386a8e55b511c1b3d647c` (git)
  - affected: `45919fbfe1c487c17ea1d198534339a5e8abeae3 to before 3945ce8cbce4e328e6fdf0b522dc71e340de19db` (git)
  - affected: `45919fbfe1c487c17ea1d198534339a5e8abeae3 to before 65cae82fd3c39b53430672cb9e3ecd267471a6ce` (git)
  - affected: `45919fbfe1c487c17ea1d198534339a5e8abeae3 to before c70994c2862b05e44728912b2ea9487d31e2aea7` (git)
  - affected: `45919fbfe1c487c17ea1d198534339a5e8abeae3 to before 7e7fff51808237703a3a1df6dd5cae1dfd1db86d` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.5`
  - unaffected: `before 5.5` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 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

## 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-2026-90185](https://www.cve.org/CVERecord?id=CVE-2026-90185)
- [NVD: CVE-2026-90185](https://nvd.nist.gov/vuln/detail/CVE-2026-90185)

### References from the CNA

- <https://git.kernel.org/stable/c/8e839ed5210399a0330a8a6c5885c1d40a537c6d>
- <https://git.kernel.org/stable/c/88d806d0e1d36246208386a8e55b511c1b3d647c>
- <https://git.kernel.org/stable/c/3945ce8cbce4e328e6fdf0b522dc71e340de19db>
- <https://git.kernel.org/stable/c/65cae82fd3c39b53430672cb9e3ecd267471a6ce>
- <https://git.kernel.org/stable/c/c70994c2862b05e44728912b2ea9487d31e2aea7>
- <https://git.kernel.org/stable/c/7e7fff51808237703a3a1df6dd5cae1dfd1db86d>

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-2026-90185>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90185/>. Everything for agents: <https://agentprime.io/llms.txt>.