CVE-2026-98157
UnknownSummary
In the Linux kernel, the EDAC/device_sysfs poll_msec sysfs store file uses simple_strtoul(), which accepts an unsigned long, while the target field poll_msec is an unsigned int. On 64-bit systems, a value greater than UINT_MAX is silently truncated when stored.
Risk Assessment
Silent truncation can lead to unexpected configuration behavior, and a value of 0 can cause the poll work to spin without delay and consume 100% CPU. This affects system stability and performance.
Recommendation
Update the Linux kernel to a version that uses kstrtouint() and rejects values larger than UINT_MAX and smaller than 1. Avoid setting poll_msec to 0.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation The poll_msec sysfs store file uses simple_strtoul() which accepts an unsigned long, but the target field (poll_msec) is unsigned int. On 64-bit systems, a value > UINT_MAX is silently truncated when stored. Fix the mismatch by using kstrtouint() instead. This rejects values larger than UINT_MAX at parse time, making truncation impossible. Also add a check for value < 1 to reject the 0-delay case, which would cause the poll work to spin without delay and consume 100% CPU.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS