# swiotlb: use the adjusted address for the highmem page lookup

CVE record · `CVE-2026-98254`

- **Identifiers:** `CVE-2026-98254`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 6 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 6 Oct 2026, 08:45 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: `5f89468e2f060031cd89fd4287298e0eaf246bf6 to before 6e53b4d6afbde626255805d438cabb1cac482445` (git)
  - affected: `5f89468e2f060031cd89fd4287298e0eaf246bf6 to before aa4709813b29db89f2307f968db5d24925dcdeb1` (git)
  - affected: `5f89468e2f060031cd89fd4287298e0eaf246bf6 to before 0219b72f5c209732b2f03a8cc0d7240b5e428a99` (git)
  - affected: `5f89468e2f060031cd89fd4287298e0eaf246bf6 to before b7d7914a9ae3097e63d113007e4fb44d33d515b1` (git)
  - affected: `e6108147dd91b94d1979b110f265710c254c99d5` (git)
  - affected: `e77b796eb9b7ca3c1c0d574d0c155f55b59ca8d5` (git)
  - affected: `5.10.47 to before 5.11` (semver)
  - affected: `5.12.14 to before 5.13` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.13`
  - unaffected: `before 5.13` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.54 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.8 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:** 0.0013, the 2nd percentile, on 10 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 6 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98254](https://www.cve.org/CVERecord?id=CVE-2026-98254)
- [NVD: CVE-2026-98254](https://nvd.nist.gov/vuln/detail/CVE-2026-98254)

### References from the CNA

- <https://git.kernel.org/stable/c/6e53b4d6afbde626255805d438cabb1cac482445>
- <https://git.kernel.org/stable/c/aa4709813b29db89f2307f968db5d24925dcdeb1>
- <https://git.kernel.org/stable/c/0219b72f5c209732b2f03a8cc0d7240b5e428a99>
- <https://git.kernel.org/stable/c/b7d7914a9ae3097e63d113007e4fb44d33d515b1>

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-2026-98254>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98254/>. Everything for agents: <https://agentprime.io/llms.txt>.