# net/sched: act_ife: Only operate on Ethernet frames

CVE record · `CVE-2026-90083`

- **Identifiers:** `CVE-2026-90083`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:06 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: `295a6e06d21e1f469c9f38b00125a13b60ad4e7c to before 3c07621770b04f19b67e3af4a24b4d447826fbdd` (git)
  - affected: `295a6e06d21e1f469c9f38b00125a13b60ad4e7c to before b951dd2fd5ede007474fc134ecb5639e1f86f5de` (git)
  - affected: `295a6e06d21e1f469c9f38b00125a13b60ad4e7c to before 13dddf87a1f89557920f9b437a21ea0b7225f828` (git)
  - affected: `295a6e06d21e1f469c9f38b00125a13b60ad4e7c to before d218ea7df6eba076171f2d4897a429a31f2139f0` (git)
  - affected: `295a6e06d21e1f469c9f38b00125a13b60ad4e7c to before 138b0054021fd7d57bc3eb68b3f4e2bcec037849` (git)
  - affected: `295a6e06d21e1f469c9f38b00125a13b60ad4e7c to before 5b483f7791b079bb97d411f1066652ff659207ff` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.11`
  - unaffected: `before 4.11` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 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 Linux kernel's net/sched act_ife action, from version 4.11 onward, mishandles frames that lack an Ethernet header, such as packets redirected from a PPP device, and this can crash the kernel. The source gives few details on what access an attacker needs. Upgrade to 6.1.191, 6.6.160, 6.12.114, 6.18.52, or a later release in those series.

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:** 0.0022, the 12th percentile, on 13 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90083](https://www.cve.org/CVERecord?id=CVE-2026-90083)
- [NVD: CVE-2026-90083](https://nvd.nist.gov/vuln/detail/CVE-2026-90083)

### References from the CNA

- <https://git.kernel.org/stable/c/3c07621770b04f19b67e3af4a24b4d447826fbdd>
- <https://git.kernel.org/stable/c/b951dd2fd5ede007474fc134ecb5639e1f86f5de>
- <https://git.kernel.org/stable/c/13dddf87a1f89557920f9b437a21ea0b7225f828>
- <https://git.kernel.org/stable/c/d218ea7df6eba076171f2d4897a429a31f2139f0>
- <https://git.kernel.org/stable/c/138b0054021fd7d57bc3eb68b3f4e2bcec037849>
- <https://git.kernel.org/stable/c/5b483f7791b079bb97d411f1066652ff659207ff>

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-2026-90083>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90083/>. Everything for agents: <https://agentprime.io/llms.txt>.