# tty: clear cdev pointer after cdev_add() failure

CVE record · `CVE-2026-90334`

- **Identifiers:** `CVE-2026-90334`
- **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, 16:08 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: `c1a752ba2d6b8a52879c7ab637cff38359ea9827 to before fb1de260033c215dba438973d82b48562bdc86bb` (git)
  - affected: `c1a752ba2d6b8a52879c7ab637cff38359ea9827 to before e9e64dd02fd68776afda00777591eca0c3984285` (git)
  - affected: `c1a752ba2d6b8a52879c7ab637cff38359ea9827 to before 33a44333a9dfda044b0e233399b12ead7f8a90ae` (git)
  - affected: `c1a752ba2d6b8a52879c7ab637cff38359ea9827 to before d331c63570af61ef7aaf516b64a8d6f47518a3a4` (git)
  - affected: `c1a752ba2d6b8a52879c7ab637cff38359ea9827 to before a83fcddf3c75d004f12aa13555bb73da19fb75a9` (git)
  - affected: `c1a752ba2d6b8a52879c7ab637cff38359ea9827 to before 4f6bd79bb7e55095f09bec9b4eb6c09df1306116` (git)
  - affected: `c1a752ba2d6b8a52879c7ab637cff38359ea9827 to before 5c5a795bf6248fe96f96dd9fd79d66bbb4a92077` (git)
  - affected: `c1a752ba2d6b8a52879c7ab637cff38359ea9827 to before 6645856f0df3aeecd45519cb611415b4b89c2223` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.3`
  - unaffected: `before 4.3` (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: `6.18.52 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:** 0.0022, 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-2026-90334](https://www.cve.org/CVERecord?id=CVE-2026-90334)
- [NVD: CVE-2026-90334](https://nvd.nist.gov/vuln/detail/CVE-2026-90334)

### References from the CNA

- <https://git.kernel.org/stable/c/fb1de260033c215dba438973d82b48562bdc86bb>
- <https://git.kernel.org/stable/c/e9e64dd02fd68776afda00777591eca0c3984285>
- <https://git.kernel.org/stable/c/33a44333a9dfda044b0e233399b12ead7f8a90ae>
- <https://git.kernel.org/stable/c/d331c63570af61ef7aaf516b64a8d6f47518a3a4>
- <https://git.kernel.org/stable/c/a83fcddf3c75d004f12aa13555bb73da19fb75a9>
- <https://git.kernel.org/stable/c/4f6bd79bb7e55095f09bec9b4eb6c09df1306116>
- <https://git.kernel.org/stable/c/5c5a795bf6248fe96f96dd9fd79d66bbb4a92077>
- <https://git.kernel.org/stable/c/6645856f0df3aeecd45519cb611415b4b89c2223>

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-2026-90334>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90334/>. Everything for agents: <https://agentprime.io/llms.txt>.