iio: adc: nxp-sar-adc: fix division by zero in write_raw

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-63935
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:11 UTC
Updated2026-07-19 16:17:11 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: iio: adc: nxp-sar-adc: fix division by zero in write_raw Add a validation check for the sampling frequency value before using it as a divisor. A user writing zero or a negative value to the sampling_frequency sysfs attribute triggers a division by zero in the kernel. Also prevent unsigned integer underflow when the computed cycle count is smaller than NXP_SAR_ADC_CONV_TIME, which would wrap the u32 inpsamp to a huge value.

Risk And Classification

EPSS: 0.001890000 probability, percentile 0.087830000 (date 2026-07-20)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4434072a893e4864519c167947083ff3e4cc2d95 cb6ea15e7d3c7518f806975a06b7d4c0a26402ea git Not specified
CNA Linux Linux affected 4434072a893e4864519c167947083ff3e4cc2d95 a9aba21a539c668a66b58eeb08ad3909e5a54c2a git Not specified
CNA Linux Linux affected 7.0 Not specified
CNA Linux Linux unaffected 7.0 semver Not specified
CNA Linux Linux unaffected 7.0.12 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a9aba21a539c668a66b58eeb08ad3909e5a54c2a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cb6ea15e7d3c7518f806975a06b7d4c0a26402ea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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