CVE-2026-72397 (GCVE-0-2026-72397)
Vulnerability from cvelistv5
Published
2026-08-15 05:56
Modified
2026-10-21 12:44
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: hwmon: (pmbus/core) honor vrm_version in pmbus_data2reg_vid() pmbus_data2reg_vid() hardcoded the VR11 encoding regardless of the vrm_version configured by the driver, while pmbus_reg2data_vid() already switched on it. Any driver that selects a non-VR11 VID mode and exposes a regulator (or hwmon vout setter) sent dangerously wrong codes to PMBUS_VOUT_COMMAND -- e.g. an nvidia195mv part asked for 200 mV got the VR11 clamp to 500 mV encoded as 0xB2, which the chip interprets as 1080 mV. Mirror pmbus_reg2data_vid() so writes round-trip with reads.
References
Impacted products
Vendor Product Version
Linux Linux Version: 068c227056b9223fea1a759e08db2558d5cbb5ad
Version: 068c227056b9223fea1a759e08db2558d5cbb5ad
Version: 068c227056b9223fea1a759e08db2558d5cbb5ad
Version: 068c227056b9223fea1a759e08db2558d5cbb5ad
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