# Bluetooth: MSFT: validate evt_prefix_len against the response length

CVE record · `CVE-2026-90251`

- **Identifiers:** `CVE-2026-90251`
- **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: `145373cb1b1fcdba2059e945d0aa2613af2e84d1 to before dce783a10e70f013410f5b583a29fc3286899629` (git)
  - affected: `145373cb1b1fcdba2059e945d0aa2613af2e84d1 to before 21f539c59ed330b671d75fd119c5f659ff92fbd1` (git)
  - affected: `145373cb1b1fcdba2059e945d0aa2613af2e84d1 to before 52b1b3b4d403cbda1b70ce2385e1a71f166a87ba` (git)
  - affected: `145373cb1b1fcdba2059e945d0aa2613af2e84d1 to before e804d54a5a99d99250490e68093eff7190472e6f` (git)
  - affected: `145373cb1b1fcdba2059e945d0aa2613af2e84d1 to before 620c2631cff490d14d0b9d56f185cc745806d6d7` (git)
  - affected: `145373cb1b1fcdba2059e945d0aa2613af2e84d1 to before 7c2658023d839b651368a5b8b781bf9a817647cb` (git)
  - affected: `145373cb1b1fcdba2059e945d0aa2613af2e84d1 to before 63562cfaea8a650fdb31ee8de21c32e3600be642` (git)
  - affected: `145373cb1b1fcdba2059e945d0aa2613af2e84d1 to before 0079e1a944634ab2dc1c7cdec1144486d096407e` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.8`
  - unaffected: `before 5.8` (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:** 0.0021, the 11th 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-2026-90251](https://www.cve.org/CVERecord?id=CVE-2026-90251)
- [NVD: CVE-2026-90251](https://nvd.nist.gov/vuln/detail/CVE-2026-90251)

### References from the CNA

- <https://git.kernel.org/stable/c/dce783a10e70f013410f5b583a29fc3286899629>
- <https://git.kernel.org/stable/c/21f539c59ed330b671d75fd119c5f659ff92fbd1>
- <https://git.kernel.org/stable/c/52b1b3b4d403cbda1b70ce2385e1a71f166a87ba>
- <https://git.kernel.org/stable/c/e804d54a5a99d99250490e68093eff7190472e6f>
- <https://git.kernel.org/stable/c/620c2631cff490d14d0b9d56f185cc745806d6d7>
- <https://git.kernel.org/stable/c/7c2658023d839b651368a5b8b781bf9a817647cb>
- <https://git.kernel.org/stable/c/63562cfaea8a650fdb31ee8de21c32e3600be642>
- <https://git.kernel.org/stable/c/0079e1a944634ab2dc1c7cdec1144486d096407e>

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-2026-90251>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90251/>. Everything for agents: <https://agentprime.io/llms.txt>.