# mfd: sm501: Fix potential memory leaks during remove

CVE record · `CVE-2026-80974`

- **Identifiers:** `CVE-2026-80974`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:42 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: `b6d6454fdb66f3829af8b92ab06825b6060fdf7e to before 0eae998ca448029fb61a6bb9fd7b1f9d05a9490d` (git)
  - affected: `b6d6454fdb66f3829af8b92ab06825b6060fdf7e to before b78e34ed7e97763d493d95a5c1edefffbfd2f356` (git)
  - affected: `b6d6454fdb66f3829af8b92ab06825b6060fdf7e to before fcc6c3b11d73459e0d55b27c98cc56d59fef4d82` (git)
  - affected: `b6d6454fdb66f3829af8b92ab06825b6060fdf7e to before 94ca4f040ba489db2d4b66e9d1ee91b4f9a00534` (git)
  - affected: `b6d6454fdb66f3829af8b92ab06825b6060fdf7e to before c8be3a076a59ec793fb2e4bdb830a709aaea9cce` (git)
  - affected: `b6d6454fdb66f3829af8b92ab06825b6060fdf7e to before 83feedd9d83c0c5199f98c72df0a6196b4aefb4d` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.21`
  - unaffected: `before 2.6.21` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> The sm501 driver in the Linux kernel leaks memory on device removal because the sm501_devdata structure allocated during probe is never freed; versions from 2.6.21 until fixed are affected. The source gives few details on attacker requirements. Upgrade to 6.1.191, 6.6.160, 6.12.109, or 6.18.50 in their respective series, or to a later release.

Written 12 Nov 2026.

## 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 11th percentile, on 14 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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80974](https://www.cve.org/CVERecord?id=CVE-2026-80974)
- [NVD: CVE-2026-80974](https://nvd.nist.gov/vuln/detail/CVE-2026-80974)

### References from the CNA

- <https://git.kernel.org/stable/c/0eae998ca448029fb61a6bb9fd7b1f9d05a9490d>
- <https://git.kernel.org/stable/c/b78e34ed7e97763d493d95a5c1edefffbfd2f356>
- <https://git.kernel.org/stable/c/fcc6c3b11d73459e0d55b27c98cc56d59fef4d82>
- <https://git.kernel.org/stable/c/94ca4f040ba489db2d4b66e9d1ee91b4f9a00534>
- <https://git.kernel.org/stable/c/c8be3a076a59ec793fb2e4bdb830a709aaea9cce>
- <https://git.kernel.org/stable/c/83feedd9d83c0c5199f98c72df0a6196b4aefb4d>

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-2026-80974>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80974/>. Everything for agents: <https://agentprime.io/llms.txt>.