Description
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 products
linux: linux kernel
References8
- git.kernel.org/stable/c/0e022ee4f8e0dc843ba4c80bb75408a7704279af Patch
- git.kernel.org/stable/c/528052af901d6e6bbfa0e52362a70a58a5dd1e43 Patch
- git.kernel.org/stable/c/541fc6f733b32463cf23277637bb07e2aaa00b53 Patch
- git.kernel.org/stable/c/656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b Patch
- git.kernel.org/stable/c/66cc9dec919dd63d8e4b3d386f7aed3ae684e645 Patch
- git.kernel.org/stable/c/a60794ee3f453516ab3ed212ba0295ecf890bc8c Patch
- git.kernel.org/stable/c/ea01c061d839b520f385f112908de1c6e3391327 Patch
- git.kernel.org/stable/c/f856511058c8cb470d6c6c7ce908870adcdc7dc6 Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 9 November 2026
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