# powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba

CVE record · `CVE-2026-98282`

- **Identifiers:** `CVE-2026-98282`
- **State:** Confirmed
- **Severity:** CVSS 8.8 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: `b1af23d836f811137d504d14d4cbdd01929dec34 to before 98d8dcc4ebd10523507d4478e148809a7771a213` (git)
  - affected: `b1af23d836f811137d504d14d4cbdd01929dec34 to before 9fd9c9bbb05417f468a11fb6d145d7ff61f4a868` (git)
  - affected: `b1af23d836f811137d504d14d4cbdd01929dec34 to before 3776bf56e06980e8a12c8c0565d9e6ac44965f03` (git)
  - affected: `b1af23d836f811137d504d14d4cbdd01929dec34 to before d6a1779129d936bc1fbab80181165da544eab736` (git)
  - affected: `b1af23d836f811137d504d14d4cbdd01929dec34 to before d48ceb6e1a6915c7bac4f902554a1047365cdff2` (git)
  - affected: `b1af23d836f811137d504d14d4cbdd01929dec34 to before 0543813753ef5cfbd6fa96694f7acf783fa01af7` (git)
  - affected: `b1af23d836f811137d504d14d4cbdd01929dec34 to before 314091243159f8e3749bc719bb129f423f72fd86` (git)
  - affected: `b1af23d836f811137d504d14d4cbdd01929dec34 to before 0b271f7d7f5ed45bc498a03ce0aa9cfd8402fc71` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.12`
  - unaffected: `before 4.12` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (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

- 8.8 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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-2026-98282](https://www.cve.org/CVERecord?id=CVE-2026-98282)
- [NVD: CVE-2026-98282](https://nvd.nist.gov/vuln/detail/CVE-2026-98282)

### References from the CNA

- <https://git.kernel.org/stable/c/98d8dcc4ebd10523507d4478e148809a7771a213>
- <https://git.kernel.org/stable/c/9fd9c9bbb05417f468a11fb6d145d7ff61f4a868>
- <https://git.kernel.org/stable/c/3776bf56e06980e8a12c8c0565d9e6ac44965f03>
- <https://git.kernel.org/stable/c/d6a1779129d936bc1fbab80181165da544eab736>
- <https://git.kernel.org/stable/c/d48ceb6e1a6915c7bac4f902554a1047365cdff2>
- <https://git.kernel.org/stable/c/0543813753ef5cfbd6fa96694f7acf783fa01af7>
- <https://git.kernel.org/stable/c/314091243159f8e3749bc719bb129f423f72fd86>
- <https://git.kernel.org/stable/c/0b271f7d7f5ed45bc498a03ce0aa9cfd8402fc71>

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-2026-98282>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98282/>. Everything for agents: <https://agentprime.io/llms.txt>.