# drm/amdgpu/pm/powerplay: bounds-check voltage index in SMU7 lookup

CVE record · `CVE-2026-93178`

- **Identifiers:** `CVE-2026-93178`
- **State:** Confirmed
- **Severity:** CVSS 7.1 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, 16:12 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: `c82baa28184356a75c0157129f88af42b2e7b695 to before d9ef085114d1e3c2c1f869c0bdb275a7b358ce8b` (git)
  - affected: `c82baa28184356a75c0157129f88af42b2e7b695 to before 6f08c001fa6e8212930d694540ae8d9d6d3fb58a` (git)
  - affected: `c82baa28184356a75c0157129f88af42b2e7b695 to before ce0d8e72836c9d3710a160ad848b0f1d096075e3` (git)
  - affected: `c82baa28184356a75c0157129f88af42b2e7b695 to before 745297208d31222f916cc04da313cb737b997935` (git)
  - affected: `c82baa28184356a75c0157129f88af42b2e7b695 to before f925d317d84d401d642e537ea18ee12f67cb6983` (git)
  - affected: `c82baa28184356a75c0157129f88af42b2e7b695 to before 8a3db9f593b643904c6cc6d8a3f211c84ca6cf8a` (git)
  - affected: `c82baa28184356a75c0157129f88af42b2e7b695 to before 1664327ce797e09e387dc10cbbaa5b8d76558d2c` (git)
  - affected: `c82baa28184356a75c0157129f88af42b2e7b695 to before 3a8a05477cda6c8293e2b629495b42981dcaba32` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.5`
  - unaffected: `before 4.5` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 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

- 7.1 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0016, the 5th percentile, on 14 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-2026-93178](https://www.cve.org/CVERecord?id=CVE-2026-93178)
- [NVD: CVE-2026-93178](https://nvd.nist.gov/vuln/detail/CVE-2026-93178)

### References from the CNA

- <https://git.kernel.org/stable/c/d9ef085114d1e3c2c1f869c0bdb275a7b358ce8b>
- <https://git.kernel.org/stable/c/6f08c001fa6e8212930d694540ae8d9d6d3fb58a>
- <https://git.kernel.org/stable/c/ce0d8e72836c9d3710a160ad848b0f1d096075e3>
- <https://git.kernel.org/stable/c/745297208d31222f916cc04da313cb737b997935>
- <https://git.kernel.org/stable/c/f925d317d84d401d642e537ea18ee12f67cb6983>
- <https://git.kernel.org/stable/c/8a3db9f593b643904c6cc6d8a3f211c84ca6cf8a>
- <https://git.kernel.org/stable/c/1664327ce797e09e387dc10cbbaa5b8d76558d2c>
- <https://git.kernel.org/stable/c/3a8a05477cda6c8293e2b629495b42981dcaba32>

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-2026-93178>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93178/>. Everything for agents: <https://agentprime.io/llms.txt>.