# wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO

CVE record · `CVE-2026-98887`

- **Identifiers:** `CVE-2026-98887`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 23 Oct 2026
- **Updated:** 26 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 11:37 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: `5d44fe7c9808c56e136e59147bd932f5491520f1 to before 3a96bb65b4b820d8b41fa155781ec1c29e3479d4` (git)
  - affected: `5d44fe7c9808c56e136e59147bd932f5491520f1 to before 59e1f2a0242232b4a3af144ae317d3913fc09046` (git)
  - affected: `5d44fe7c9808c56e136e59147bd932f5491520f1 to before 1ae85bb34fe3510659b86d6a5f8036dd498233f8` (git)
  - affected: `5d44fe7c9808c56e136e59147bd932f5491520f1 to before 6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695` (git)
  - affected: `5d44fe7c9808c56e136e59147bd932f5491520f1 to before b5b1234bbfa25537fb9a5c0d62c328ed4547f721` (git)
  - affected: `5d44fe7c9808c56e136e59147bd932f5491520f1 to before 13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7` (git)
  - affected: `5d44fe7c9808c56e136e59147bd932f5491520f1 to before 3dc723ac78a6e4fa0fd49e27e487ed319da40a9f` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.7`
  - unaffected: `before 5.7` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 11th 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 23 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98887](https://www.cve.org/CVERecord?id=CVE-2026-98887)
- [NVD: CVE-2026-98887](https://nvd.nist.gov/vuln/detail/CVE-2026-98887)

### References from the CNA

- <https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4>
- <https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046>
- <https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8>
- <https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695>
- <https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721>
- <https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7>
- <https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f>

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-2026-98887>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98887/>. Everything for agents: <https://agentprime.io/llms.txt>.