drm/amdgpu/pm/powerplay: bounds-check voltage index in SMU7 lookup
Priority LOW 30Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- Partial Red Hat: 6 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/pm/powerplay: bounds-check voltage index in SMU7 lookup vddInd and vddcInd fields from VBIOS-parsed tables are used to index into voltage lookup tables without a bounds check. Return -EINVAL when any index is out of range.
Why it matters now
EPSS 0.00164 5th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.270, 5.15.221, 6.1.188 +5Red Hat: 6 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-93178
- 2026-10-03 Alias added: GHSA-fw9r-626q-5x54
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-21 Affected versions changed · Red Hat
- 2026-10-21 CVSS score added · Red Hat
- 2026-11-01 Affected versions changed · Red Hat
References
Other 8
- 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
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Sources
- CVE-2026-93178 · CVE Program
- CVE-2026-93178 · NVD
- FIRST EPSS
- GHSA-fw9r-626q-5x54 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-93178 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences