Vulnerability Description
In 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.
References
- https://git.kernel.org/stable/c/6258bfec51e894ea97b8e69f3cde7af269b37de9
- https://git.kernel.org/stable/c/944082fdb0284a31c0b37a88c8a1d4404da3a6d9
- https://git.kernel.org/stable/c/a72f8e51d6ee66c255a8a93a4421b8a538d112a8
- https://git.kernel.org/stable/c/f9bbd943c34a9ad60e593a4b99ce2394e4e2381b
FAQ
What is CVE-2026-63936?
CVE-2026-63936 is a documented vulnerability. In 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(...
How severe is CVE-2026-63936?
CVSS scoring is not yet available for CVE-2026-63936. Check NVD for updates.
Is there a patch for CVE-2026-63936?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.