EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation

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.

Timeline

1. Sep 25, 2026, 10:36 AM UTCCVE published
2. Oct 19, 2026, 9:14 AM UTCRecord last updated

Affected versions

• Linux Linux

  From e27e3dac651771fe3250f6305dee277bce29fc5d · fixed in a60794ee3f453516ab3ed212ba0295ecf890bc8c; From e27e3dac651771fe3250f6305dee277bce29fc5d · fixed in f856511058c8cb470d6c6c7ce908870adcdc7dc6; From e27e3dac651771fe3250f6305dee277bce29fc5d · fixed in 656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b; From e27e3dac651771fe3250f6305dee277bce29fc5d · fixed in 541fc6f733b32463cf23277637bb07e2aaa00b53; From e27e3dac651771fe3250f6305dee277bce29fc5d · fixed in ea01c061d839b520f385f112908de1c6e3391327; From e27e3dac651771fe3250f6305dee277bce29fc5d · fixed in 528052af901d6e6bbfa0e52362a70a58a5dd1e43; From e27e3dac651771fe3250f6305dee277bce29fc5d · fixed in 0e022ee4f8e0dc843ba4c80bb75408a7704279af; From e27e3dac651771fe3250f6305dee277bce29fc5d · fixed in 66cc9dec919dd63d8e4b3d386f7aed3ae684e645

• Linux Linux

  2.6.23

• KernelLinux

  From 2.6.23 · fixed in 5.10.271; From 5.11.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.53; From 6.19.0 · fixed in 7.2.7

References 8