CVE-2026-98157

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < ea01c061d839b520f385f112908de1c6e3391327affected
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < 528052af901d6e6bbfa0e52362a70a58a5dd1e43affected
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < 0e022ee4f8e0dc843ba4c80bb75408a7704279afaffected
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < 66cc9dec919dd63d8e4b3d386f7aed3ae684e645affected
LinuxLinux2.6.23affected
LinuxLinux0 < 2.6.23unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc2 <= *unaffected

Weaknesses

References