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CVE-2026-98199

Unknown

Last modified

CVE-2026-98199 is a vulnerability of currently unknown severity. 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.

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 2c6fcbb211494f1ff6ef384776944b9e04f4c14c, < 272006a52cbd9c8342cead4d3eb9221ebbe8b985; >= 2c6fcbb211494f1ff6ef384776944b9e04f4c14c, < b32607710a20ad983f9fe4a3051892584c0641a4; >= 2c6fcbb211494f1ff6ef384776944b9e04f4c14c, < 66368f682a53f3a3842e20eebb571a59809c52c0; >= 2c6fcbb211494f1ff6ef384776944b9e04f4c14c, < 1ec644c94466834f8cb6b7ba12636fd047bdfdda; >= 2c6fcbb211494f1ff6ef384776944b9e04f4c14c, < 9558fc1e042ac6b12dd63c37d2c51be4ec86d402; >= 2c6fcbb211494f1ff6ef384776944b9e04f4c14c, < b49f100a15b8876deccf8c59f41af92b8e25fd74; >= 2c6fcbb211494f1ff6ef384776944b9e04f4c14c, < 06bd6794b5fd2163880ac3bfe973d4cc61f359f3
LinuxLinux5.10

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98199?
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.
How severe is CVE-2026-98199?
Severity scoring for CVE-2026-98199 is pending analysis.
How do I fix CVE-2026-98199?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST