# ALSA: timer: Don't take register_mutex with copy_from/to_user()

CVE record · `CVE-2025-23134`

- **Identifiers:** `CVE-2025-23134`
- **State:** Confirmed
- **Severity:** CVSS 5.5 Medium
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-667](https://cwe.mitre.org/data/definitions/667.html)
- **Tags:** [CWE-667](https://agentprime.io/advisories/tag/cwe-667.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Apr 2025
- **Updated:** 11 May 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Apr 2025, 14:13 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: `3923de04c81733b30b8ed667569632272fdfed9a to before 15291b561d8cc835a2eea76b394070cf8e072771` (git)
  - affected: `3923de04c81733b30b8ed667569632272fdfed9a to before 296f7a9e15aab276db11206cbc1e2ae1215d7862` (git)
  - affected: `3923de04c81733b30b8ed667569632272fdfed9a to before b074f47e55df93832bbbca1b524c501e6fea1c0d` (git)
  - affected: `3923de04c81733b30b8ed667569632272fdfed9a to before 3424c8f53bc63c87712a7fc22dc13d0cc85fb0d6` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.9`
  - unaffected: `before 6.9` (semver)
  - unaffected: `6.12.23 to 6.12.*, inclusive` (semver)
  - unaffected: `6.13.11 to 6.13.*, inclusive` (semver)
  - unaffected: `6.14.2 to 6.14.*, inclusive` (semver)
  - unaffected: `6.15 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

- 5.5 Medium, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`, from ADP (CISA-ADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0015, the 3rd percentile, on 5 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 16 Apr 2025. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2025-23134](https://www.cve.org/CVERecord?id=CVE-2025-23134)
- [NVD: CVE-2025-23134](https://nvd.nist.gov/vuln/detail/CVE-2025-23134)

### References from the CNA

- <https://git.kernel.org/stable/c/15291b561d8cc835a2eea76b394070cf8e072771>
- <https://git.kernel.org/stable/c/296f7a9e15aab276db11206cbc1e2ae1215d7862>
- <https://git.kernel.org/stable/c/b074f47e55df93832bbbca1b524c501e6fea1c0d>
- <https://git.kernel.org/stable/c/3424c8f53bc63c87712a7fc22dc13d0cc85fb0d6>

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-2025-23134>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2025-23134/>. Everything for agents: <https://agentprime.io/llms.txt>.