# CVE-2025-38304: Bluetooth: Fix NULL pointer deference on eir_get_service_data

Status: published. Published: 2025-07-10. Updated: 2026-11-05.

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: Fix NULL pointer deference on eir_get_service_data

The len parameter is considered optional so it can be NULL so it cannot
be used for skipping to next entry of EIR_SERVICE_DATA.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ 8f9ae5b3ae80f168a6224529e3787f4fb27f299a; < 497c9d2d7d3983826bb02c10fb4a5818be6550fb (affected, git); ≥ 8f9ae5b3ae80f168a6224529e3787f4fb27f299a; < 4bf29910570666e668a60d953f8da78e95bb7fa2 (affected, git); ≥ 8f9ae5b3ae80f168a6224529e3787f4fb27f299a; < 842f7c3154d5b25ca11753c02ee8cf6ee64c0142 (affected, git); ≥ 8f9ae5b3ae80f168a6224529e3787f4fb27f299a; < 7d99cc0f8e6fa0f35570887899f178122a61d44e (affected, git); ≥ 8f9ae5b3ae80f168a6224529e3787f4fb27f299a; < 20a2aa01f5aeb6daad9aeaa7c33dd512c58d81eb (affected, git). Source: CNA: Linux
- Linux / Linux: 5.19 (affected); ≥ 0; < 5.19 (unaffected, semver); ≥ 6.1.142; ≤ 6.1.* (unaffected, semver); ≥ 6.6.94; ≤ 6.6.* (unaffected, semver); ≥ 6.12.34; ≤ 6.12.* (unaffected, semver); ≥ 6.15.3; ≤ 6.15.* (unaffected, semver); ≥ 6.16; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.18% as of 2026-11-05; percentile 7.20%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/497c9d2d7d3983826bb02c10fb4a5818be6550fb (CNA: Linux)

- https://git.kernel.org/stable/c/4bf29910570666e668a60d953f8da78e95bb7fa2 (CNA: Linux)

- https://git.kernel.org/stable/c/842f7c3154d5b25ca11753c02ee8cf6ee64c0142 (CNA: Linux)

- https://git.kernel.org/stable/c/7d99cc0f8e6fa0f35570887899f178122a61d44e (CNA: Linux)

- https://git.kernel.org/stable/c/20a2aa01f5aeb6daad9aeaa7c33dd512c58d81eb (CNA: Linux)

- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html (ADP: CVE)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2025-38304; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2025-38304; retrieved 2026-11-05; source updated Not reported

Revision: 45e57da28415a8398150f36d85557d67661e5cbc7d02892204af8e4071052f90

Canonical: https://y2.dev/cve/CVE-2025-38304

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.