# misc: nsm: bound the device-reported response length

CVE record · `CVE-2026-89743`

- **Identifiers:** `CVE-2026-89743`
- **State:** Confirmed
- **Severity:** CVSS 7.7 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, 19:46 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: `b9873755a6c8ccfce79094c4dce9efa3ecb1a749 to before 339f19b9a6171289b0e797deb8bda80b9a1fcc30` (git)
  - affected: `b9873755a6c8ccfce79094c4dce9efa3ecb1a749 to before 29e634a18957acda11383a15ab98a91c4ae9e294` (git)
  - affected: `b9873755a6c8ccfce79094c4dce9efa3ecb1a749 to before 2aa0fb9c96f894a9c179a48e7522ea6705800adf` (git)
  - affected: `b9873755a6c8ccfce79094c4dce9efa3ecb1a749 to before 808e530654a5354e6df78863a5d61e4d44e67235` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.8`
  - unaffected: `before 6.8` (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

- 7.7 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0014, the 3rd 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-2026-89743](https://www.cve.org/CVERecord?id=CVE-2026-89743)
- [NVD: CVE-2026-89743](https://nvd.nist.gov/vuln/detail/CVE-2026-89743)

### References from the CNA

- <https://git.kernel.org/stable/c/339f19b9a6171289b0e797deb8bda80b9a1fcc30>
- <https://git.kernel.org/stable/c/29e634a18957acda11383a15ab98a91c4ae9e294>
- <https://git.kernel.org/stable/c/2aa0fb9c96f894a9c179a48e7522ea6705800adf>
- <https://git.kernel.org/stable/c/808e530654a5354e6df78863a5d61e4d44e67235>

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-2026-89743>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89743/>. Everything for agents: <https://agentprime.io/llms.txt>.