What’s Vulnerable › Vulnerabilities

CVE-2026-93178: drm/amdgpu/pm/powerplay: bounds-check voltage index in SMU7 lookup

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

Description

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.

Affected products

• Linux kernel: 4.5 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

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

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