# pnfs/blocklayout: Fix device leaks on parse failure

CVE record · `CVE-2026-90150`

- **Identifiers:** `CVE-2026-90150`
- **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, 16:06 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: `5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 to before 710ae187a5d490a894054d17645cf5c83d37dfbf` (git)
  - affected: `5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 to before 51d162dfb618f6cf3aa5e331c0305e27771ad884` (git)
  - affected: `5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 to before 8a2494964edac2a13e82441c2bf887548dc3be0b` (git)
  - affected: `5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 to before 1e1c36b206c659cf94c6755a1d821ed1babd32bc` (git)
  - affected: `5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 to before 23e4162405c456ce12c772d5882d306135e828ae` (git)
  - affected: `5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 to before c056f817e4200fb18079d5052c273a22f191ff0a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.18`
  - unaffected: `before 3.18` (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.

> This Linux kernel vulnerability concerns the pNFS block layout driver (pnfs/blocklayout), where device resources can leak when parsing a concat or stripe device fails. The source does not describe an attacker-triggered impact, such as denial of service or code execution, and gives few details on how a leak would be reached. Affected kernels are listed as versions from 3.18 onward, with fixes in the listed stable releases (6.1.191, 6.6.160, 6.12.110, 6.18.52); upgrade to a fixed version for your branch. No workaround is listed.

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:** 0.0022, the 12th 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-2026-90150](https://www.cve.org/CVERecord?id=CVE-2026-90150)
- [NVD: CVE-2026-90150](https://nvd.nist.gov/vuln/detail/CVE-2026-90150)

### References from the CNA

- <https://git.kernel.org/stable/c/710ae187a5d490a894054d17645cf5c83d37dfbf>
- <https://git.kernel.org/stable/c/51d162dfb618f6cf3aa5e331c0305e27771ad884>
- <https://git.kernel.org/stable/c/8a2494964edac2a13e82441c2bf887548dc3be0b>
- <https://git.kernel.org/stable/c/1e1c36b206c659cf94c6755a1d821ed1babd32bc>
- <https://git.kernel.org/stable/c/23e4162405c456ce12c772d5882d306135e828ae>
- <https://git.kernel.org/stable/c/c056f817e4200fb18079d5052c273a22f191ff0a>

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-2026-90150>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90150/>. Everything for agents: <https://agentprime.io/llms.txt>.