# iommu/tegra241-cmdqv: Don't fall back to a freed smmu after devm_krealloc()

CVE record · `CVE-2026-90427`

- **Identifiers:** `CVE-2026-90427`
- **State:** Confirmed
- **Severity:** CVSS 7.4 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 21 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: `918eb5c856f6ce4cf93b4b38e4b5e156905c5943 to before ea2edb27ef2648d8687cd0fc3ec3ba1793436e7e` (git)
  - affected: `918eb5c856f6ce4cf93b4b38e4b5e156905c5943 to before 268cbe3a36ae57a2ec09601f343b92f6f092d505` (git)
  - affected: `918eb5c856f6ce4cf93b4b38e4b5e156905c5943 to before 86197679b293f0601c3331d545f99a70a7780aa9` (git)
  - affected: `918eb5c856f6ce4cf93b4b38e4b5e156905c5943 to before d4d05f55e9da646ec03adfa77260eb46f4163749` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.12`
  - unaffected: `before 6.12` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.57 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

- 7.4 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:H/PR:N/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-2026-90427](https://www.cve.org/CVERecord?id=CVE-2026-90427)
- [NVD: CVE-2026-90427](https://nvd.nist.gov/vuln/detail/CVE-2026-90427)

### References from the CNA

- <https://git.kernel.org/stable/c/ea2edb27ef2648d8687cd0fc3ec3ba1793436e7e>
- <https://git.kernel.org/stable/c/268cbe3a36ae57a2ec09601f343b92f6f092d505>
- <https://git.kernel.org/stable/c/86197679b293f0601c3331d545f99a70a7780aa9>
- <https://git.kernel.org/stable/c/d4d05f55e9da646ec03adfa77260eb46f4163749>

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-2026-90427>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90427/>. Everything for agents: <https://agentprime.io/llms.txt>.