# net/iucv: filter frames in afiucv_hs_rcv() by ingress device

CVE record · `CVE-2026-81003`

- **Identifiers:** `CVE-2026-81003`
- **State:** Confirmed
- **Severity:** CVSS 8.1 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: `3881ac441f642d56503818123446f7298442236b to before 639828ad4d374056167391dbaffd13dd5e5e5ddb` (git)
  - affected: `3881ac441f642d56503818123446f7298442236b to before 92e5c281f1caa287bb58292f2687c9e3ff3aa23e` (git)
  - affected: `3881ac441f642d56503818123446f7298442236b to before 712330f8a4293cfd97b0d62b7c7dc01862a16b98` (git)
  - affected: `3881ac441f642d56503818123446f7298442236b to before 0a5af67e7184c6a0e155c317840bd64b37177af4` (git)
  - affected: `3881ac441f642d56503818123446f7298442236b to before dfac2936b83be00035ae176f8252e1c1e1de9207` (git)
  - affected: `3881ac441f642d56503818123446f7298442236b to before 8e3763f1ccac3fc395f9af2b87114c023ced8a3f` (git)
  - affected: `3881ac441f642d56503818123446f7298442236b to before a7f0130a091724e69827ab58e74777a88747e892` (git)
  - affected: `3881ac441f642d56503818123446f7298442236b to before 80230a18c164a4b5bbc048fe2768b219ac17bc5a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.2`
  - unaffected: `before 3.2` (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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0031, the 24th 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-2026-81003](https://www.cve.org/CVERecord?id=CVE-2026-81003)
- [NVD: CVE-2026-81003](https://nvd.nist.gov/vuln/detail/CVE-2026-81003)

### References from the CNA

- <https://git.kernel.org/stable/c/639828ad4d374056167391dbaffd13dd5e5e5ddb>
- <https://git.kernel.org/stable/c/92e5c281f1caa287bb58292f2687c9e3ff3aa23e>
- <https://git.kernel.org/stable/c/712330f8a4293cfd97b0d62b7c7dc01862a16b98>
- <https://git.kernel.org/stable/c/0a5af67e7184c6a0e155c317840bd64b37177af4>
- <https://git.kernel.org/stable/c/dfac2936b83be00035ae176f8252e1c1e1de9207>
- <https://git.kernel.org/stable/c/8e3763f1ccac3fc395f9af2b87114c023ced8a3f>
- <https://git.kernel.org/stable/c/a7f0130a091724e69827ab58e74777a88747e892>
- <https://git.kernel.org/stable/c/80230a18c164a4b5bbc048fe2768b219ac17bc5a>

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-2026-81003>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-81003/>. Everything for agents: <https://agentprime.io/llms.txt>.