CVE-2025-7029
SMM Arbitrary Write via Unchecked OcHeader Buffer in Platform Configuration Handler
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SMM Arbitrary Write via Unchecked OcHeader Buffer in Platform Configuration Handler
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.
Reserved 2025-07-02 | Published 2025-07-11 | Updated 2025-07-12 | Assigner certccCWE-822 uncontrolled pointer deference
www.gigabyte.com/Support/Security
www.binarly.io/advisories/brly-dva-2025-011
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