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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： drm/amdgpu/pm/powerplay：在 SMU7 查找过程中对电压索引进行边界检查 从 VBIOS 解析出的表中的 vddInd 和 vddcInd 字段被用于索引电压查找表，但未进行边界检查。当任意索引超出范围时，返回 -EINVAL。

CVSS 7.1 · High EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c82baa28184356a75c0157129f88af42b2e7b695< d9ef085114d1e3c2c1f869c0bdb275a7b358ce8b affected
c82baa28184356a75c0157129f88af42b2e7b695< 6f08c001fa6e8212930d694540ae8d9d6d3fb58a affected
c82baa28184356a75c0157129f88af42b2e7b695< ce0d8e72836c9d3710a160ad848b0f1d096075e3 affected
c82baa28184356a75c0157129f88af42b2e7b695< 745297208d31222f916cc04da313cb737b997935 affected
c82baa28184356a75c0157129f88af42b2e7b695< f925d317d84d401d642e537ea18ee12f67cb6983 affected
c82baa28184356a75c0157129f88af42b2e7b695< 8a3db9f593b643904c6cc6d8a3f211c84ca6cf8a affected
c82baa28184356a75c0157129f88af42b2e7b695< 1664327ce797e09e387dc10cbbaa5b8d76558d2c affected
c82baa28184356a75c0157129f88af42b2e7b695< 3a8a05477cda6c8293e2b629495b42981dcaba32 affected
… +10 more rows
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I. Basic Information for CVE-2026-93178

Vulnerability Information
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Vulnerability Title
drm/amdgpu/pm/powerplay: bounds-check voltage index in SMU7 lookup
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux c82baa28184356a75c0157129f88af42b2e7b695 ~ d9ef085114d1e3c2c1f869c0bdb275a7b358ce8b -
Linux Linux 4.5 -

II. Public POCs for CVE-2026-93178

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III. Intelligence Information for CVE-2026-93178

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Patches & Fixes for CVE-2026-93178 (8)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93178

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