# bpf, x86: Fix trampoline stack size for 128-bit arguments

CVE record · `CVE-2026-90358`

- **Identifiers:** `CVE-2026-90358`
- **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, 16:09 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: `a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 to before 2189232984b45ac8281c80484ab9f67b380a2ca1` (git)
  - affected: `a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 to before 7f96bf0d24b2acc0732906b60a10f06783f2470d` (git)
  - affected: `a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 to before 4aed2346fa9b88d458eeb8c01123f3c07585a675` (git)
  - affected: `a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 to before 40f3bfbbb222b92278f3797614b70f68d46824ac` (git)
  - affected: `a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 to before a6d7d7a253c550e74b0651897fe313c2f9b2301f` (git)
  - affected: `a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 to before 814cba835ef648e0c5eb79505c96c0493b29eea6` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.1`
  - unaffected: `before 6.1` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 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:** 0.0017, 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-2026-90358](https://www.cve.org/CVERecord?id=CVE-2026-90358)
- [NVD: CVE-2026-90358](https://nvd.nist.gov/vuln/detail/CVE-2026-90358)

### References from the CNA

- <https://git.kernel.org/stable/c/2189232984b45ac8281c80484ab9f67b380a2ca1>
- <https://git.kernel.org/stable/c/7f96bf0d24b2acc0732906b60a10f06783f2470d>
- <https://git.kernel.org/stable/c/4aed2346fa9b88d458eeb8c01123f3c07585a675>
- <https://git.kernel.org/stable/c/40f3bfbbb222b92278f3797614b70f68d46824ac>
- <https://git.kernel.org/stable/c/a6d7d7a253c550e74b0651897fe313c2f9b2301f>
- <https://git.kernel.org/stable/c/814cba835ef648e0c5eb79505c96c0493b29eea6>

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-2026-90358>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90358/>. Everything for agents: <https://agentprime.io/llms.txt>.