# null_blk: free zones array on device power-off

CVE record · `CVE-2026-90187`

- **Identifiers:** `CVE-2026-90187`
- **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, 16:07 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: `ca4b2a011948fae4e4d31490107db4926385a983 to before 26d21585caa61c30d0f3044a1e6d172456148c9f` (git)
  - affected: `ca4b2a011948fae4e4d31490107db4926385a983 to before 08a31a2cc3d1cea67ccd292d01511cd0a72d4656` (git)
  - affected: `ca4b2a011948fae4e4d31490107db4926385a983 to before 056be41932c95aabdb3c2967d1ef4978f17a0225` (git)
  - affected: `ca4b2a011948fae4e4d31490107db4926385a983 to before b2437d37fcc31fce8a5da1cc1739e284814d2491` (git)
  - affected: `ca4b2a011948fae4e4d31490107db4926385a983 to before 0a3afab87124171022fb3579502fa38ef5b311c9` (git)
  - affected: `ca4b2a011948fae4e4d31490107db4926385a983 to before 2a6357a9b935a34f5508618fee8a7fffbf7722a8` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.19`
  - unaffected: `before 4.19` (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

## 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-2026-90187](https://www.cve.org/CVERecord?id=CVE-2026-90187)
- [NVD: CVE-2026-90187](https://nvd.nist.gov/vuln/detail/CVE-2026-90187)

### References from the CNA

- <https://git.kernel.org/stable/c/26d21585caa61c30d0f3044a1e6d172456148c9f>
- <https://git.kernel.org/stable/c/08a31a2cc3d1cea67ccd292d01511cd0a72d4656>
- <https://git.kernel.org/stable/c/056be41932c95aabdb3c2967d1ef4978f17a0225>
- <https://git.kernel.org/stable/c/b2437d37fcc31fce8a5da1cc1739e284814d2491>
- <https://git.kernel.org/stable/c/0a3afab87124171022fb3579502fa38ef5b311c9>
- <https://git.kernel.org/stable/c/2a6357a9b935a34f5508618fee8a7fffbf7722a8>

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-2026-90187>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90187/>. Everything for agents: <https://agentprime.io/llms.txt>.