# ALSA: aloop: Fix peer runtime UAF during format-change stop

CVE record · `CVE-2026-46090`

- **Identifiers:** `CVE-2026-46090`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-364](https://cwe.mitre.org/data/definitions/364.html) · [CWE-416](https://cwe.mitre.org/data/definitions/416.html)
- **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md) · [CWE-364](https://agentprime.io/advisories/tag/cwe-364.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 27 May 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 27 May 2026, 12:58 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: `597603d615d2b19a9e451d8cfac24372856a522d to before 83bd62fa9620ac98d5d694bde14c50f98c8e7189` (git)
  - affected: `597603d615d2b19a9e451d8cfac24372856a522d to before 345c24b2bcf0923dfae1ab41497351c68214ff76` (git)
  - affected: `597603d615d2b19a9e451d8cfac24372856a522d to before 3727a3541788412c393eec236ad228d72efe19c7` (git)
  - affected: `597603d615d2b19a9e451d8cfac24372856a522d to before d258cdce50ff3e02392917258e81a0ce9555c327` (git)
  - affected: `597603d615d2b19a9e451d8cfac24372856a522d to before 03f52a9c170431e8f10e156b9dc0dae80b3e9198` (git)
  - affected: `597603d615d2b19a9e451d8cfac24372856a522d to before bdd9503c3d222d2735b56c7a8b4422ccf3de6e5c` (git)
  - affected: `597603d615d2b19a9e451d8cfac24372856a522d to before 5d45e34bf001344e2966dabca1897561bbc9e913` (git)
  - affected: `597603d615d2b19a9e451d8cfac24372856a522d to before e5c33cdc6f402eab8abd36ecf436b22c9d3a8aff` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.37`
  - unaffected: `before 2.6.37` (semver)
  - unaffected: `5.10.259 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.210 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.88 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.27 to 6.18.*, inclusive` (semver)
  - unaffected: `7.0.4 to 7.0.*, inclusive` (semver)
  - unaffected: `7.1 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

- 7.8 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux) (used for this record)
- 7.0 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`, from ADP (redhat-SADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0010, the 1st percentile, on 6 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 27 May 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-46090](https://www.cve.org/CVERecord?id=CVE-2026-46090)
- [NVD: CVE-2026-46090](https://nvd.nist.gov/vuln/detail/CVE-2026-46090)

### References from the CNA

- <https://git.kernel.org/stable/c/83bd62fa9620ac98d5d694bde14c50f98c8e7189>
- <https://git.kernel.org/stable/c/345c24b2bcf0923dfae1ab41497351c68214ff76>
- <https://git.kernel.org/stable/c/3727a3541788412c393eec236ad228d72efe19c7>
- <https://git.kernel.org/stable/c/d258cdce50ff3e02392917258e81a0ce9555c327>
- <https://git.kernel.org/stable/c/03f52a9c170431e8f10e156b9dc0dae80b3e9198>
- <https://git.kernel.org/stable/c/bdd9503c3d222d2735b56c7a8b4422ccf3de6e5c>
- <https://git.kernel.org/stable/c/5d45e34bf001344e2966dabca1897561bbc9e913>
- <https://git.kernel.org/stable/c/e5c33cdc6f402eab8abd36ecf436b22c9d3a8aff>

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-2026-46090>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-46090/>. Everything for agents: <https://agentprime.io/llms.txt>.