# w1: ds28e17: reject an oversize length on an I2C block read

CVE record · `CVE-2026-80931`

- **Identifiers:** `CVE-2026-80931`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 19 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: `ebc4768ac4971eab4b570e733e47ac9dfd0e4175 to before b30c021c6073559ea6851b522d8a17a524a27b4a` (git)
  - affected: `ebc4768ac4971eab4b570e733e47ac9dfd0e4175 to before 1d08877fc37e90945df38d255715bd1d6c052d46` (git)
  - affected: `ebc4768ac4971eab4b570e733e47ac9dfd0e4175 to before bf76d61e118b7044600a65775a3bf8adc2c6823d` (git)
  - affected: `ebc4768ac4971eab4b570e733e47ac9dfd0e4175 to before 0f6496b34cc2919420f303b2aabdd9f71e084b56` (git)
  - affected: `ebc4768ac4971eab4b570e733e47ac9dfd0e4175 to before cb55c5da9828f77db2a2701316949d4de1e9b773` (git)
  - affected: `ebc4768ac4971eab4b570e733e47ac9dfd0e4175 to before ae0c79a8527044e54d81fd5a3b49ce6177633758` (git)
  - affected: `ebc4768ac4971eab4b570e733e47ac9dfd0e4175 to before 6df05f630c84a109736642362e452089886f9974` (git)
  - affected: `ebc4768ac4971eab4b570e733e47ac9dfd0e4175 to before 169ae5e65e5aaf213b6a578f6478a9fd2e523606` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.15`
  - unaffected: `before 4.15` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 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

## 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)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0013, the 2nd 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-2026-80931](https://www.cve.org/CVERecord?id=CVE-2026-80931)
- [NVD: CVE-2026-80931](https://nvd.nist.gov/vuln/detail/CVE-2026-80931)

### References from the CNA

- <https://git.kernel.org/stable/c/b30c021c6073559ea6851b522d8a17a524a27b4a>
- <https://git.kernel.org/stable/c/1d08877fc37e90945df38d255715bd1d6c052d46>
- <https://git.kernel.org/stable/c/bf76d61e118b7044600a65775a3bf8adc2c6823d>
- <https://git.kernel.org/stable/c/0f6496b34cc2919420f303b2aabdd9f71e084b56>
- <https://git.kernel.org/stable/c/cb55c5da9828f77db2a2701316949d4de1e9b773>
- <https://git.kernel.org/stable/c/ae0c79a8527044e54d81fd5a3b49ce6177633758>
- <https://git.kernel.org/stable/c/6df05f630c84a109736642362e452089886f9974>
- <https://git.kernel.org/stable/c/169ae5e65e5aaf213b6a578f6478a9fd2e523606>

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-2026-80931>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80931/>. Everything for agents: <https://agentprime.io/llms.txt>.