CVE-2026-46007
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
A vulnerability has been identified in the Linux kernel related to cacheline sharing for DMA buffers in the hwmon module. This issue may occur depending on the architecture when the transfer buffer shares a cacheline with a mutex.
Risk Assessment
Cacheline sharing can lead to unpredictable system behavior, posing risks to data integrity and system stability.
Recommendation
It is recommended to update the Linux kernel to the latest version to benefit from fixes related to DMA buffer management and avoid cacheline sharing issues.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: hwmon: (powerz) Avoid cacheline sharing for DMA buffer Depending on the architecture the transfer buffer may share a cacheline with the following mutex. As the buffer may be used for DMA, that is problematic. Use the high-level DMA helpers to make sure that cacheline sharing can not happen. Also drop the comment, as the helpers are documentation enough. https://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org