# usb: gadget: fix null pointer dereference in usb_put_function_instance()

CVE record · `CVE-2026-90019`

- **Identifiers:** `CVE-2026-90019`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:33 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: `0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 to before 0fc54a00954f9f4c3e3d4ffa64a530685d99a39b` (git)
  - affected: `0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 to before 6e6736c049683380f5e20becde498986e9293ca4` (git)
  - affected: `0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 to before 3a9691fff79bcce95338435599df6d3ae433cfdc` (git)
  - affected: `0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 to before 7a4f4ca7ff32ae24807c83e2a06d62b13378d53c` (git)
  - affected: `0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 to before 6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0` (git)
  - affected: `0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 to before d3a7fa61997db3bf6dadef4c1bd87a4fa782a817` (git)
  - affected: `0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 to before 5117f236e9e30744338b425395d55913c4500897` (git)
  - affected: `0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 to before 6e74ac5c596fd246e37eadfc354567179ccbe9aa` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.9`
  - unaffected: `before 3.9` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (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: `6.18.51 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 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:** 0.0022, 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90019](https://www.cve.org/CVERecord?id=CVE-2026-90019)
- [NVD: CVE-2026-90019](https://nvd.nist.gov/vuln/detail/CVE-2026-90019)

### References from the CNA

- <https://git.kernel.org/stable/c/0fc54a00954f9f4c3e3d4ffa64a530685d99a39b>
- <https://git.kernel.org/stable/c/6e6736c049683380f5e20becde498986e9293ca4>
- <https://git.kernel.org/stable/c/3a9691fff79bcce95338435599df6d3ae433cfdc>
- <https://git.kernel.org/stable/c/7a4f4ca7ff32ae24807c83e2a06d62b13378d53c>
- <https://git.kernel.org/stable/c/6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0>
- <https://git.kernel.org/stable/c/d3a7fa61997db3bf6dadef4c1bd87a4fa782a817>
- <https://git.kernel.org/stable/c/5117f236e9e30744338b425395d55913c4500897>
- <https://git.kernel.org/stable/c/6e74ac5c596fd246e37eadfc354567179ccbe9aa>

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-2026-90019>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90019/>. Everything for agents: <https://agentprime.io/llms.txt>.