Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
068c227056b9223fea1a759e08db2558d5cbb5ad to < cd0e037130806d7714c356eccefac6e1b92dbc34affected068c227056b9223fea1a759e08db2558d5cbb5ad to < 125a5a4ad03c74ced4c2a55db45ef03505362ff9affected068c227056b9223fea1a759e08db2558d5cbb5ad to < 5bd0d47640395f8a8c34446b62d1781b88869dfaaffected068c227056b9223fea1a759e08db2558d5cbb5ad to < 828cd614e2af053ca5e1d6da767bbd8a1b5cabfbaffected
Linux Linux
Default version status: affected
4.3affected0 to < 4.3unaffected6.6.160 to ≤ 6.6.*unaffected6.12.114 to ≤ 6.12.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected