CVE-2026-93178

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

State: Published
Severity: 7.1 High
Published: Sep 17, 2026
Updated: Oct 19, 2026
Reserved: Sep 17, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	c82baa28184356a75c0157129f88af42b2e7b695 to before d9ef085114d1e3c2c1f869c0bdb275a7b358ce8bAffected c82baa28184356a75c0157129f88af42b2e7b695 to before 6f08c001fa6e8212930d694540ae8d9d6d3fb58aAffected c82baa28184356a75c0157129f88af42b2e7b695 to before ce0d8e72836c9d3710a160ad848b0f1d096075e3Affected c82baa28184356a75c0157129f88af42b2e7b695 to before 745297208d31222f916cc04da313cb737b997935Affected c82baa28184356a75c0157129f88af42b2e7b695 to before f925d317d84d401d642e537ea18ee12f67cb6983Affected c82baa28184356a75c0157129f88af42b2e7b695 to before 8a3db9f593b643904c6cc6d8a3f211c84ca6cf8aAffected c82baa28184356a75c0157129f88af42b2e7b695 to before 1664327ce797e09e387dc10cbbaa5b8d76558d2cAffected c82baa28184356a75c0157129f88af42b2e7b695 to before 3a8a05477cda6c8293e2b629495b42981dcaba32Affected
LinuxLinux	4.5Affected before 4.5Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.52 through 6.18.Not affected 7.2.6 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

c82baa28184356a75c0157129f88af42b2e7b695 to before d9ef085114d1e3c2c1f869c0bdb275a7b358ce8bAffected
c82baa28184356a75c0157129f88af42b2e7b695 to before 6f08c001fa6e8212930d694540ae8d9d6d3fb58aAffected
c82baa28184356a75c0157129f88af42b2e7b695 to before ce0d8e72836c9d3710a160ad848b0f1d096075e3Affected
c82baa28184356a75c0157129f88af42b2e7b695 to before 745297208d31222f916cc04da313cb737b997935Affected
c82baa28184356a75c0157129f88af42b2e7b695 to before f925d317d84d401d642e537ea18ee12f67cb6983Affected
c82baa28184356a75c0157129f88af42b2e7b695 to before 8a3db9f593b643904c6cc6d8a3f211c84ca6cf8aAffected
c82baa28184356a75c0157129f88af42b2e7b695 to before 1664327ce797e09e387dc10cbbaa5b8d76558d2cAffected
c82baa28184356a75c0157129f88af42b2e7b695 to before 3a8a05477cda6c8293e2b629495b42981dcaba32Affected

LinuxLinux

4.5Affected
before 4.5Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.52 through 6.18.*Not affected
7.2.6 through 7.2.*Not affected
7.3 and laterNot affected

References

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