# null_blk: free global tag_set on init error path

CVE record · `CVE-2026-90188`

- **Identifiers:** `CVE-2026-90188`
- **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: `82f402fefa50f1675bf918bcd009981bd6b30ac8 to before 0b2faa330184340d9418ad2c627c2ae881772e33` (git)
  - affected: `82f402fefa50f1675bf918bcd009981bd6b30ac8 to before 665c94554ff0d5d88caae7f40c16c8e0a3369eda` (git)
  - affected: `82f402fefa50f1675bf918bcd009981bd6b30ac8 to before 2882e1450fa4597811a951196e07553ea134eb31` (git)
  - affected: `82f402fefa50f1675bf918bcd009981bd6b30ac8 to before 2b59484ac1e64dd78dbe8c6140891c6308085a75` (git)
  - affected: `82f402fefa50f1675bf918bcd009981bd6b30ac8 to before 081cf37e8a0e00cd91d6df53172c9d928790a798` (git)
  - affected: `82f402fefa50f1675bf918bcd009981bd6b30ac8 to before 5a1c5ff3a49ba93a1fd0b70537e7a0164071760d` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.13`
  - unaffected: `before 4.13` (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-2026-90188](https://www.cve.org/CVERecord?id=CVE-2026-90188)
- [NVD: CVE-2026-90188](https://nvd.nist.gov/vuln/detail/CVE-2026-90188)

### References from the CNA

- <https://git.kernel.org/stable/c/0b2faa330184340d9418ad2c627c2ae881772e33>
- <https://git.kernel.org/stable/c/665c94554ff0d5d88caae7f40c16c8e0a3369eda>
- <https://git.kernel.org/stable/c/2882e1450fa4597811a951196e07553ea134eb31>
- <https://git.kernel.org/stable/c/2b59484ac1e64dd78dbe8c6140891c6308085a75>
- <https://git.kernel.org/stable/c/081cf37e8a0e00cd91d6df53172c9d928790a798>
- <https://git.kernel.org/stable/c/5a1c5ff3a49ba93a1fd0b70537e7a0164071760d>

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-2026-90188>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90188/>. Everything for agents: <https://agentprime.io/llms.txt>.