# iommu/vt-d: Clear Present bit before tearing down copied context entry

CVE record · `CVE-2026-90243`

- **Identifiers:** `CVE-2026-90243`
- **State:** Confirmed
- **Severity:** CVSS 8.1 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, 16:07 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: `c7191984e5aade540f1a3845a116537c89572655 to before 97750a8dce79c1a9b2b2d2a020b61b800141996c` (git)
  - affected: `c7191984e5aade540f1a3845a116537c89572655 to before 3c88cfedc7768b1ae2dc7ddc71547ae9a1aaff7d` (git)
  - affected: `c7191984e5aade540f1a3845a116537c89572655 to before 6b822d18c33af9d1e16a8e5e6aa6e656987b09de` (git)
  - affected: `c7191984e5aade540f1a3845a116537c89572655 to before f532c57985b1a7d6b7e37e05506b46d413e5cca4` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.12`
  - unaffected: `before 6.12` (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

- 8.1 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/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-2026-90243](https://www.cve.org/CVERecord?id=CVE-2026-90243)
- [NVD: CVE-2026-90243](https://nvd.nist.gov/vuln/detail/CVE-2026-90243)

### References from the CNA

- <https://git.kernel.org/stable/c/97750a8dce79c1a9b2b2d2a020b61b800141996c>
- <https://git.kernel.org/stable/c/3c88cfedc7768b1ae2dc7ddc71547ae9a1aaff7d>
- <https://git.kernel.org/stable/c/6b822d18c33af9d1e16a8e5e6aa6e656987b09de>
- <https://git.kernel.org/stable/c/f532c57985b1a7d6b7e37e05506b46d413e5cca4>

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-2026-90243>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90243/>. Everything for agents: <https://agentprime.io/llms.txt>.