CVE-2026-98199

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.

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EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.11%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/06bd6794b5fd2163880ac3bfe973d4cc61f359f3 https://git.kernel.org/stable/c/1ec644c94466834f8cb6b7ba12636fd047bdfdda https://git.kernel.org/stable/c/272006a52cbd9c8342cead4d3eb9221ebbe8b985 https://git.kernel.org/stable/c/66368f682a53f3a3842e20eebb571a59809c52c0 https://git.kernel.org/stable/c/9558fc1e042ac6b12dd63c37d2c51be4ec86d402 https://git.kernel.org/stable/c/b32607710a20ad983f9fe4a3051892584c0641a4 https://git.kernel.org/stable/c/b49f100a15b8876deccf8c59f41af92b8e25fd74

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 do I check if I'm vulnerable to CVE-2026-98199? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.