CVE-2026-98157

CVE-2026-98157

Medium · published September 25, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
1.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00114 · 1.4th percentile
Published
2026-09-25T15:17Z
Affected products (8)
ProductVersionsFixed in
linux/linux_kernel≥ 2.6.23, < 5.10.2715.10.271
linux/linux_kernel≥ 5.15, < 5.15.2225.15.222
linux/linux_kernel≥ 6.1, < 6.1.1896.1.189
linux/linux_kernel≥ 6.6, < 6.6.1586.6.158
linux/linux_kernel≥ 6.12, < 6.12.1116.12.111
linux/linux_kernel≥ 6.13, < 6.18.536.18.53
linux/linux_kernel≥ 6.19, < 7.2.77.2.7
linux/linux_kernelall versions—
References (8)
EPSS history
Timeline
  • 27 SEP 03:28Z
    EPSS moved — → 0%
    epss
  • 25 SEP 10:36Z
    EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation
    cvelistv5