CVE-2026-98199

Unknown

Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: (pmbus/core) increase number of phases and add new mask Increase the number of phases to 16 as a new upcoming device supports such a number. While at it, add a new mask for controlling the source of the output voltage. Note (groeck): This patch was meant to prepare for support of MAX20826 and compatible devices, which support more than 10 phases per page. However, Sashiko reports that the mp2975 driver already supports up to 14 phases, and the mp2856 driver supports up to 12 phases. This already has the potential for out-of-bounds writes when probing the affected chips, making this patch a bug fix.

SeverityUnknown
CVSS—
Exploit probability—
ProductLinux
PublishedOct 6, 2026
First seenOct 6, 2026

How to fix

Update
  • Linux Linux272006a52cbd9c8342cead4d3eb9221ebbe8b985, b32607710a20ad983f9fe4a3051892584c0641a4, 66368f682a53f3a3842e20eebb571a59809c52c0, 1ec644c94466834f8cb6b7ba12636fd047bdfdda, 9558fc1e042ac6b12dd63c37d2c51be4ec86d402, b49f100a15b8876deccf8c59f41af92b8e25fd74, 06bd6794b5fd2163880ac3bfe973d4cc61f359f3 or later

Affected products

ProductAffected versionsFixed in
Linux Linux2c6fcbb211494f1ff6ef384776944b9e04f4c14c ≤ v < 272006a52cbd9c8342cead4d3eb9221ebbe8b985, 2c6fcbb211494f1ff6ef384776944b9e04f4c14c ≤ v < b32607710a20ad983f9fe4a3051892584c0641a4, 2c6fcbb211494f1ff6ef384776944b9e04f4c14c ≤ v < 66368f682a53f3a3842e20eebb571a59809c52c0, 2c6fcbb211494f1ff6ef384776944b9e04f4c14c ≤ v < 1ec644c94466834f8cb6b7ba12636fd047bdfdda, 2c6fcbb211494f1ff6ef384776944b9e04f4c14c ≤ v < 9558fc1e042ac6b12dd63c37d2c51be4ec86d402, 2c6fcbb211494f1ff6ef384776944b9e04f4c14c ≤ v < b49f100a15b8876deccf8c59f41af92b8e25fd74, 2c6fcbb211494f1ff6ef384776944b9e04f4c14c ≤ v < 06bd6794b5fd2163880ac3bfe973d4cc61f359f3, 5.10272006a52cbd9c8342cead4d3eb9221ebbe8b985, b32607710a20ad983f9fe4a3051892584c0641a4, 66368f682a53f3a3842e20eebb571a59809c52c0, 1ec644c94466834f8cb6b7ba12636fd047bdfdda, 9558fc1e042ac6b12dd63c37d2c51be4ec86d402, b49f100a15b8876deccf8c59f41af92b8e25fd74, 06bd6794b5fd2163880ac3bfe973d4cc61f359f3

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CVE-2026-98199 · Linux · Dark Radar