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 < a60794ee3f453516ab3ed212ba0295ecf890bc8caffected
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < f856511058c8cb470d6c6c7ce908870adcdc7dc6affected
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < 656e2fe98ac452db4e5b8147d1f33b8c35b4ec4baffected
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < 541fc6f733b32463cf23277637bb07e2aaa00b53affected
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < ea01c061d839b520f385f112908de1c6e3391327affected
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < 528052af901d6e6bbfa0e52362a70a58a5dd1e43affected
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < 0e022ee4f8e0dc843ba4c80bb75408a7704279afaffected
LinuxLinuxe27e3dac651771fe3250f6305dee277bce29fc5d < 66cc9dec919dd63d8e4b3d386f7aed3ae684e645affected
LinuxLinux2.6.23affected
LinuxLinux0 < 2.6.23unaffected
LinuxLinux5.10.271 <= 5.10.*unaffected
LinuxLinux5.15.222 <= 5.15.*unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc2 <= *unaffected

Weaknesses

References