# CVE-2026-45871: tpm: st33zp24: Fix missing cleanup on get_burstcount() error

Status: published. Published: 2026-05-27. Updated: 2026-11-06.

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

tpm: st33zp24: Fix missing cleanup on get_burstcount() error

get_burstcount() can return -EBUSY on timeout. When this happens,
st33zp24_send() returns directly without releasing the locality
acquired earlier.

Use goto out_err to ensure proper cleanup when get_burstcount() fails.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ bf38b8710892333cec2d8069644eb36ff435fd6f; < e0ce3da82341fcd6194175f1837946b2a894c625 (affected, git); ≥ bf38b8710892333cec2d8069644eb36ff435fd6f; < 7687133509cf66ced120b667fefd21f80bf17993 (affected, git); ≥ bf38b8710892333cec2d8069644eb36ff435fd6f; < 1256c6dc96d1e687e6e9b63088156ed07411b00c (affected, git); ≥ bf38b8710892333cec2d8069644eb36ff435fd6f; < a51cff9be046e13e1c1b2fe45d5c48b582ec9b8c (affected, git); ≥ bf38b8710892333cec2d8069644eb36ff435fd6f; < cc09d55f519e15355de343264a22ac6682b8305e (affected, git); ≥ bf38b8710892333cec2d8069644eb36ff435fd6f; < ec15eb67fe9df87981b4829b901ec254273ca483 (affected, git); ≥ bf38b8710892333cec2d8069644eb36ff435fd6f; < 4fffb77d35d038f146e6192da583dbe4971d869e (affected, git); ≥ bf38b8710892333cec2d8069644eb36ff435fd6f; < 3e91b44c93ad2871f89fc2a98c5e4fe6ca5db3d9 (affected, git). Source: CNA: Linux
- Linux / Linux: 4.1 (affected); ≥ 0; < 4.1 (unaffected, semver); ≥ 5.10.252; ≤ 5.10.* (unaffected, semver); ≥ 5.15.202; ≤ 5.15.* (unaffected, semver); ≥ 6.1.165; ≤ 6.1.* (unaffected, semver); ≥ 6.6.128; ≤ 6.6.* (unaffected, semver); ≥ 6.12.75; ≤ 6.12.* (unaffected, semver); ≥ 6.18.14; ≤ 6.18.* (unaffected, semver); ≥ 6.19.4; ≤ 6.19.* (unaffected, semver); ≥ 7.0; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.19% as of 2026-11-06; percentile 8.22%

- 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/e0ce3da82341fcd6194175f1837946b2a894c625 (CNA: Linux)

- https://git.kernel.org/stable/c/7687133509cf66ced120b667fefd21f80bf17993 (CNA: Linux)

- https://git.kernel.org/stable/c/1256c6dc96d1e687e6e9b63088156ed07411b00c (CNA: Linux)

- https://git.kernel.org/stable/c/a51cff9be046e13e1c1b2fe45d5c48b582ec9b8c (CNA: Linux)

- https://git.kernel.org/stable/c/cc09d55f519e15355de343264a22ac6682b8305e (CNA: Linux)

- https://git.kernel.org/stable/c/ec15eb67fe9df87981b4829b901ec254273ca483 (CNA: Linux)

- https://git.kernel.org/stable/c/4fffb77d35d038f146e6192da583dbe4971d869e (CNA: Linux)

- https://git.kernel.org/stable/c/3e91b44c93ad2871f89fc2a98c5e4fe6ca5db3d9 (CNA: Linux)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-45871; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-45871; retrieved 2026-11-06; source updated Not reported

Revision: 5683b7eaf0d9b5fc03f8a5e46db75a5e3f68e39154f3a62584763a80365ce4a6

Canonical: https://y2.dev/cve/CVE-2026-45871

## 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.