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CVE-2026-98157

Unknown

Last modified

CVE-2026-98157 is a vulnerability of currently unknown severity. 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.

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 Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= e27e3dac651771fe3250f6305dee277bce29fc5d, < ea01c061d839b520f385f112908de1c6e3391327; >= e27e3dac651771fe3250f6305dee277bce29fc5d, < 528052af901d6e6bbfa0e52362a70a58a5dd1e43; >= e27e3dac651771fe3250f6305dee277bce29fc5d, < 0e022ee4f8e0dc843ba4c80bb75408a7704279af; >= e27e3dac651771fe3250f6305dee277bce29fc5d, < 66cc9dec919dd63d8e4b3d386f7aed3ae684e645
LinuxLinux2.6.23

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98157?
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.
How severe is CVE-2026-98157?
Severity scoring for CVE-2026-98157 is pending analysis.
How do I fix CVE-2026-98157?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST