# CVE-2026-45835: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_connection_cb()

Status: published. Published: 2026-05-26. Updated: 2026-11-06.

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

Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_connection_cb()

Add the same NULL guard already present in
l2cap_sock_resume_cb() and l2cap_sock_ready_cb().

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ 80808e431e1ef25856457de82ce141bed6a6313a; < 140b63cb46f2855ac4ec8fba2f1e974a9c2974e8 (affected, git); ≥ 80808e431e1ef25856457de82ce141bed6a6313a; < 2422eaed0925973c0f318c94eb13e76f14c7381e (affected, git); ≥ 80808e431e1ef25856457de82ce141bed6a6313a; < 684a1f9ee2325437ae18ac5371884e4c6a25ae73 (affected, git); ≥ 80808e431e1ef25856457de82ce141bed6a6313a; < ab77c8bc30269bee15d917059a66bea48909f5f0 (affected, git); ≥ 80808e431e1ef25856457de82ce141bed6a6313a; < bc3bb9f40da8e53896abc2d29c6d0c6686fe4ab9 (affected, git); ≥ 80808e431e1ef25856457de82ce141bed6a6313a; < 741e6024e31587b0c021b6616a9e428a4ea0b64a (affected, git); ≥ 80808e431e1ef25856457de82ce141bed6a6313a; < 76083fb80f5a38ac13326b2d810f66bd07771eea (affected, git); ≥ 80808e431e1ef25856457de82ce141bed6a6313a; < 0a120d96166301d7a95be75b52f843837dbd1219 (affected, git). Source: CNA: Linux
- Linux / Linux: 3.1 (affected); ≥ 0; < 3.1 (unaffected, semver); ≥ 5.10.258; ≤ 5.10.* (unaffected, semver); ≥ 5.15.209; ≤ 5.15.* (unaffected, semver); ≥ 6.1.175; ≤ 6.1.* (unaffected, semver); ≥ 6.6.140; ≤ 6.6.* (unaffected, semver); ≥ 6.12.88; ≤ 6.12.* (unaffected, semver); ≥ 6.18.30; ≤ 6.18.* (unaffected, semver); ≥ 7.0.7; ≤ 7.0.* (unaffected, semver); ≥ 7.1; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux
- Siemens / SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: ≥ 0; < * (affected, custom). Source: ADP: siemens-SADP

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.13% as of 2026-11-06; percentile 2.29%

- 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/140b63cb46f2855ac4ec8fba2f1e974a9c2974e8 (CNA: Linux)

- https://git.kernel.org/stable/c/2422eaed0925973c0f318c94eb13e76f14c7381e (CNA: Linux)

- https://git.kernel.org/stable/c/684a1f9ee2325437ae18ac5371884e4c6a25ae73 (CNA: Linux)

- https://git.kernel.org/stable/c/ab77c8bc30269bee15d917059a66bea48909f5f0 (CNA: Linux)

- https://git.kernel.org/stable/c/bc3bb9f40da8e53896abc2d29c6d0c6686fe4ab9 (CNA: Linux)

- https://git.kernel.org/stable/c/741e6024e31587b0c021b6616a9e428a4ea0b64a (CNA: Linux)

- https://git.kernel.org/stable/c/76083fb80f5a38ac13326b2d810f66bd07771eea (CNA: Linux)

- https://git.kernel.org/stable/c/0a120d96166301d7a95be75b52f843837dbd1219 (CNA: Linux)

- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (ADP: siemens-SADP)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-45835; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-45835; retrieved 2026-11-06; source updated Not reported

Revision: 2be6a70d714c3dbb6f827f0a7edde033abb71826e1be0f5ff8df1e292c68ca86

Canonical: https://y2.dev/cve/CVE-2026-45835

## Agent and API access

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- 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.