# Bluetooth: L2CAP: validate connectionless PSM length

CVE record · `CVE-2026-97408`

- **Identifiers:** `CVE-2026-97408`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 24 Sept 2026
- **Updated:** 3 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 24 Sept 2026, 16:03 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: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 8104cd9859b6de0826cffa68adf2c1461185823b` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9448e6f693fcf1f0ac4ee648a9b2cc83bfe4a982` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 22fc1ce4e37c81d4e7aac01566ebdc232214540d` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 72e26293a231f63a856340d3a1f0f5fc29bf87e5` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 3502ede8aed3c3ee1786d952a11054ac737d1a38` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before ae69dca122f6d6046a68cf40153e6e827c77ff5c` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before a40a5f922546b3bd7c094d882b29177db4f2abe0` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2 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:** 0.0017, the 6th percentile, on 12 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 24 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-97408](https://www.cve.org/CVERecord?id=CVE-2026-97408)
- [NVD: CVE-2026-97408](https://nvd.nist.gov/vuln/detail/CVE-2026-97408)

### References from the CNA

- <https://git.kernel.org/stable/c/8104cd9859b6de0826cffa68adf2c1461185823b>
- <https://git.kernel.org/stable/c/9448e6f693fcf1f0ac4ee648a9b2cc83bfe4a982>
- <https://git.kernel.org/stable/c/22fc1ce4e37c81d4e7aac01566ebdc232214540d>
- <https://git.kernel.org/stable/c/72e26293a231f63a856340d3a1f0f5fc29bf87e5>
- <https://git.kernel.org/stable/c/3502ede8aed3c3ee1786d952a11054ac737d1a38>
- <https://git.kernel.org/stable/c/ae69dca122f6d6046a68cf40153e6e827c77ff5c>
- <https://git.kernel.org/stable/c/a40a5f922546b3bd7c094d882b29177db4f2abe0>

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-2026-97408>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-97408/>. Everything for agents: <https://agentprime.io/llms.txt>.