CVE-2025-7029

SMM Arbitrary Write via Unchecked OcHeader Buffer in Platform Configuration Handler

Description

A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control the RBX register, which is used to derive pointers (OcHeader, OcData) passed into power and thermal configuration logic. These buffers are not validated before performing multiple structured memory writes based on OcSetup NVRAM values, enabling arbitrary SMRAM corruption and potential SMM privilege escalation.

N/A

CVSS

Severity:

Affected: GIGABYTE UEFI-OverClockSmiHandler

References

Link	Tags
https://www.gigabyte.com/Support/Security
https://www.binarly.io/advisories/brly-dva-2025-011
https://kb.cert.org/vuls/id/746790

Frequently Asked Questions

What is the severity of CVE-2025-7029?: CVE-2025-7029 has not yet been assigned a CVSS score.
How to fix CVE-2025-7029?: To fix CVE-2025-7029, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-7029 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-7029 is being actively exploited.
What software or system is affected by CVE-2025-7029?: CVE-2025-7029 affects GIGABYTE UEFI-OverClockSmiHandler.

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