# bpf, xdp: move offload check into dev_xdp_install()

CVE record · `CVE-2026-90146`

- **Identifiers:** `CVE-2026-90146`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **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: `026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 to before 4a0467819bc2423be8fc4c9834e8f42af2af0861` (git)
  - affected: `026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 to before bd06033625ec20b7bdec43d21f776fc1a5e9000e` (git)
  - affected: `026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 to before 486dbe7efec2be19cd3625be282f7f6b34a3f2c5` (git)
  - affected: `026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 to before f14b774ec9bd52d0f4ec29a6597a35fd107197f9` (git)
  - affected: `026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 to before ea7b35dcc9430293b861bc7bad0c546f193c85f9` (git)
  - affected: `026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 to before 03022dd874070768a7099f18b1944c633641315f` (git)
  - affected: `026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 to before ad27ed7d2309419a129078d781504f486b1b469a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.9`
  - unaffected: `before 5.9` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.113 to 6.12.*, 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, from version 5.9 until the fixes listed in the stable branches, has a flaw in the BPF link update path that skips XDP program checks. A user who can create XDP links can swap an offloaded or device-bound program into a link created with a normal program, which moves it onto the software path. The source gives few details on the wider impact. Upgrade to Linux kernel 6.1.191 or later, 6.6.160 or later, 6.12.113 or later, or a version that includes the fix.

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

- 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:** 0.0017, the 6th 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-2026-90146](https://www.cve.org/CVERecord?id=CVE-2026-90146)
- [NVD: CVE-2026-90146](https://nvd.nist.gov/vuln/detail/CVE-2026-90146)

### References from the CNA

- <https://git.kernel.org/stable/c/4a0467819bc2423be8fc4c9834e8f42af2af0861>
- <https://git.kernel.org/stable/c/bd06033625ec20b7bdec43d21f776fc1a5e9000e>
- <https://git.kernel.org/stable/c/486dbe7efec2be19cd3625be282f7f6b34a3f2c5>
- <https://git.kernel.org/stable/c/f14b774ec9bd52d0f4ec29a6597a35fd107197f9>
- <https://git.kernel.org/stable/c/ea7b35dcc9430293b861bc7bad0c546f193c85f9>
- <https://git.kernel.org/stable/c/03022dd874070768a7099f18b1944c633641315f>
- <https://git.kernel.org/stable/c/ad27ed7d2309419a129078d781504f486b1b469a>

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-2026-90146>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90146/>. Everything for agents: <https://agentprime.io/llms.txt>.