# net: kcm: Hold RCU read lock while running BPF parser

CVE record · `CVE-2026-90143`

- **Identifiers:** `CVE-2026-90143`
- **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:** 19 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: `9b73896a81dc68a638a011877b7344b252f92276 to before 37108861cf7bd909d4a372069bcd61c8f489e232` (git)
  - affected: `9b73896a81dc68a638a011877b7344b252f92276 to before 3c70d27e792a28bca650ddd8a9aa0fe3591ffec5` (git)
  - affected: `9b73896a81dc68a638a011877b7344b252f92276 to before 1d26a6e007d46babc7fa76e5a157dccf86cd55c0` (git)
  - affected: `9b73896a81dc68a638a011877b7344b252f92276 to before b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2` (git)
  - affected: `9b73896a81dc68a638a011877b7344b252f92276 to before 21526f8a191a3c50622b8c10bd927870d780eae4` (git)
  - affected: `9b73896a81dc68a638a011877b7344b252f92276 to before 292846223eaddba890e40699d2ab82ee5671798c` (git)
  - affected: `9b73896a81dc68a638a011877b7344b252f92276 to before f392affef3c9ce64dfdde794df0579e0a7793440` (git)
  - affected: `9b73896a81dc68a638a011877b7344b252f92276 to before b0346dd64e4905291cc9c479f2e6cf1884ced4e6` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.9`
  - unaffected: `before 4.9` (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: `6.12.110 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

## 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:** 0.0016, the 5th 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-2026-90143](https://www.cve.org/CVERecord?id=CVE-2026-90143)
- [NVD: CVE-2026-90143](https://nvd.nist.gov/vuln/detail/CVE-2026-90143)

### References from the CNA

- <https://git.kernel.org/stable/c/37108861cf7bd909d4a372069bcd61c8f489e232>
- <https://git.kernel.org/stable/c/3c70d27e792a28bca650ddd8a9aa0fe3591ffec5>
- <https://git.kernel.org/stable/c/1d26a6e007d46babc7fa76e5a157dccf86cd55c0>
- <https://git.kernel.org/stable/c/b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2>
- <https://git.kernel.org/stable/c/21526f8a191a3c50622b8c10bd927870d780eae4>
- <https://git.kernel.org/stable/c/292846223eaddba890e40699d2ab82ee5671798c>
- <https://git.kernel.org/stable/c/f392affef3c9ce64dfdde794df0579e0a7793440>
- <https://git.kernel.org/stable/c/b0346dd64e4905291cc9c479f2e6cf1884ced4e6>

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-2026-90143>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90143/>. Everything for agents: <https://agentprime.io/llms.txt>.