In the Linux kernel, the following vulnerability has been resolved: iio: chemical: scd30: Cleanup initializations and fix sign-extension bug Include… (CVE-2026-64497)
A vulnerability in the Linux kernel's iio chemical scd30 driver involved a sign-extension bug caused by improper bitwise operations during float32 value manipulation. The issue was addressed by cleaning up variable initializations and replacing manual bit manipulations with safer macros. This fix prevents corruption of the exponent in float32 values.
AI Analysis
Technical Summary
The Linux kernel vulnerability CVE-2026-64497 concerns the iio chemical scd30 driver where a sign-extension bug occurred due to incorrect bitwise AND operations with a mask (~BIT(31)) on a float32 value. The vulnerability was resolved by refactoring variable initializations for clarity and correctness, introducing new macros for bit manipulation, and replacing manual bit operations with FIELD_GET() macros. This correction prevents exponent corruption in float32 values caused by the previous flawed bitwise operation.
Potential Impact
The vulnerability could lead to incorrect processing of float32 values within the affected driver due to exponent corruption. No known exploits are reported in the wild. The impact is limited to the affected component's data handling correctness rather than broader system compromise.
Mitigation Recommendations
A fix has been implemented in the Linux kernel source to address this vulnerability by cleaning up initializations and correcting the sign-extension bug. Users should update to the fixed Linux kernel version once available. Patch status is not explicitly confirmed in the provided data; check the official Linux kernel advisories or source repositories for the exact fixed version and apply updates accordingly.
In the Linux kernel, the following vulnerability has been resolved: iio: chemical: scd30: Cleanup initializations and fix sign-extension bug Include… (CVE-2026-64497)
Description
A vulnerability in the Linux kernel's iio chemical scd30 driver involved a sign-extension bug caused by improper bitwise operations during float32 value manipulation. The issue was addressed by cleaning up variable initializations and replacing manual bit manipulations with safer macros. This fix prevents corruption of the exponent in float32 values.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel vulnerability CVE-2026-64497 concerns the iio chemical scd30 driver where a sign-extension bug occurred due to incorrect bitwise AND operations with a mask (~BIT(31)) on a float32 value. The vulnerability was resolved by refactoring variable initializations for clarity and correctness, introducing new macros for bit manipulation, and replacing manual bit operations with FIELD_GET() macros. This correction prevents exponent corruption in float32 values caused by the previous flawed bitwise operation.
Potential Impact
The vulnerability could lead to incorrect processing of float32 values within the affected driver due to exponent corruption. No known exploits are reported in the wild. The impact is limited to the affected component's data handling correctness rather than broader system compromise.
Mitigation Recommendations
A fix has been implemented in the Linux kernel source to address this vulnerability by cleaning up initializations and correcting the sign-extension bug. Users should update to the fixed Linux kernel version once available. Patch status is not explicitly confirmed in the provided data; check the official Linux kernel advisories or source repositories for the exact fixed version and apply updates accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mrh8-mp34-58pv
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64497"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6542069c2644c7f8081da4
Added to database: 07/25/2026, 23:08:54 UTC
Last enriched: 07/25/2026, 23:13:03 UTC
Last updated: 07/26/2026, 05:51:53 UTC
Views: 5
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