iio: adc: mt6359: fix unchecked return value in mt6358_read_imp

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-63936
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:12 UTC
Updated2026-07-19 16:17:12 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: iio: adc: mt6359: fix unchecked return value in mt6358_read_imp In mt6358_read_imp(), the variable val_v is passed to regmap_read() but the return value is not checked. If the read fails, val_v remains uninitialized and its random stack content is subsequently reported as a measurement result. Initialize val_v to zero to ensure a predictable value is reported in case of bus failure and to prevent potential stack data leakage. This also satisfies static analyzers that might otherwise flag the variable as used uninitialized.

Risk And Classification

EPSS: 0.002000000 probability, percentile 0.100200000 (date 2026-07-20)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 3587914bf61df7924933530353d840378cdc4973 6258bfec51e894ea97b8e69f3cde7af269b37de9 git Not specified
CNA Linux Linux affected 3587914bf61df7924933530353d840378cdc4973 944082fdb0284a31c0b37a88c8a1d4404da3a6d9 git Not specified
CNA Linux Linux affected 3587914bf61df7924933530353d840378cdc4973 a72f8e51d6ee66c255a8a93a4421b8a538d112a8 git Not specified
CNA Linux Linux affected 3587914bf61df7924933530353d840378cdc4973 f9bbd943c34a9ad60e593a4b99ce2394e4e2381b git Not specified
CNA Linux Linux affected 6.11 Not specified
CNA Linux Linux unaffected 6.11 semver Not specified
CNA Linux Linux unaffected 6.12.93 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.35 6.18.* 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/944082fdb0284a31c0b37a88c8a1d4404da3a6d9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a72f8e51d6ee66c255a8a93a4421b8a538d112a8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f9bbd943c34a9ad60e593a4b99ce2394e4e2381b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6258bfec51e894ea97b8e69f3cde7af269b37de9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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