EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation (CVE-2026-98157) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-98157

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

Answer in brief

CVE-2026-98157 records a Unknown severity vulnerability in EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=e27e3dac651771fe3250f6305dee277bce29fc5d <ea01c061d839b520f385f112908de1c6e3391327 \|\| >=e27e3dac651771fe3250f6305dee277bce29fc5d <528052af901d6e6bbfa0e52362a70a58a5dd1e43 \|\| >=e27e3dac651771fe3250f6305dee277bce29fc5d <0e022ee4f8e0dc843ba4c80bb75408a7704279af \|\| >=e27e3dac651771fe3250f6305dee277bce29fc5d <66cc9dec919dd63d8e4b3d386f7aed3ae684e645	ea01c061d839b520f385f112908de1c6e3391327, 528052af901d6e6bbfa0e52362a70a58a5dd1e43, 0e022ee4f8e0dc843ba4c80bb75408a7704279af, 66cc9dec919dd63d8e4b3d386f7aed3ae684e645
Linux/Linuxgeneric	2.6.23	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to ea01c061d839b520f385f112908de1c6e3391327 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.