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

Summary

CVECVE-2026-98157
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:47 UTC
Updated2026-10-20 17:30:40 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.001570000 probability, percentile 0.041280000 (date 2026-09-27)

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected e27e3dac651771fe3250f6305dee277bce29fc5d a60794ee3f453516ab3ed212ba0295ecf890bc8c git Not specified
CNA Linux Linux affected e27e3dac651771fe3250f6305dee277bce29fc5d f856511058c8cb470d6c6c7ce908870adcdc7dc6 git Not specified
CNA Linux Linux affected e27e3dac651771fe3250f6305dee277bce29fc5d 656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b git Not specified
CNA Linux Linux affected e27e3dac651771fe3250f6305dee277bce29fc5d 541fc6f733b32463cf23277637bb07e2aaa00b53 git Not specified
CNA Linux Linux affected e27e3dac651771fe3250f6305dee277bce29fc5d ea01c061d839b520f385f112908de1c6e3391327 git Not specified
CNA Linux Linux affected e27e3dac651771fe3250f6305dee277bce29fc5d 528052af901d6e6bbfa0e52362a70a58a5dd1e43 git Not specified
CNA Linux Linux affected e27e3dac651771fe3250f6305dee277bce29fc5d 0e022ee4f8e0dc843ba4c80bb75408a7704279af git Not specified
CNA Linux Linux affected e27e3dac651771fe3250f6305dee277bce29fc5d 66cc9dec919dd63d8e4b3d386f7aed3ae684e645 git Not specified
CNA Linux Linux affected 2.6.23 Not specified
CNA Linux Linux unaffected 2.6.23 semver Not specified
CNA Linux Linux unaffected 5.10.271 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.222 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.189 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.158 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/0e022ee4f8e0dc843ba4c80bb75408a7704279af 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/528052af901d6e6bbfa0e52362a70a58a5dd1e43 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f856511058c8cb470d6c6c7ce908870adcdc7dc6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ea01c061d839b520f385f112908de1c6e3391327 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/66cc9dec919dd63d8e4b3d386f7aed3ae684e645 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/541fc6f733b32463cf23277637bb07e2aaa00b53 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a60794ee3f453516ab3ed212ba0295ecf890bc8c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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