CVE-2026-64497 is a vulnerability in Linux Kernel
Published on July 25, 2026
iio: chemical: scd30: Cleanup initializations and fix sign-extension bug
In the Linux kernel, the following vulnerability has been resolved:
iio: chemical: scd30: Cleanup initializations and fix sign-extension bug
Include linux/bitfield.h for FIELD_GET().
Create new macros for bit manipulation in combination with manual bit
manipulation being replaced with FIELD_GET().
The current variable declaration and initializations are barely readable
and use comma separations across multiple lines. Refactor the
initializations so that mantissa and exp have separate declarations and
sign gets initialized later.
In addition (and due to the nature of the cleanup), fix a sign-extension
bug where, float32 would get bitwise anded with ~BIT(31)
(which is 0xFFFFFFFF7FFFFFFF) which corrupted the exponent.
Products Associated with CVE-2026-64497
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Affected Versions
Linux:- Version 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 and below 0ccff849bde90973e6c13a666f6ceab5c55b30d4 is affected.
- Version 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 and below 1821bcacd8ac5b214c53be16cbb8172bf193f0b6 is affected.
- Version 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 and below 40bb0fdb37f441c9c9f52bf58bbd8a0ca3cc9598 is affected.
- Version 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 and below b131f0011dfef72350f4e3f11df94dc3e6b46065 is affected.
- Version 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 and below 8d4a46e971cf846bda98b20d4cabfa21c1276e5f is affected.
- Version 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 and below 82accdd57404399eddf3d56fd9beda7c61307388 is affected.
- Version 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 and below d49ff54b2784aa56a7c97982de713604de89d23a is affected.
- Version 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 and below 60d877910a43c305b5165131b258a17b1d772d57 is affected.
- Version 5.9 is affected.
- Before 5.9 is unaffected.
- Version 5.10.261, <= 5.10.* is unaffected.
- Version 5.15.212, <= 5.15.* is unaffected.
- Version 6.1.178, <= 6.1.* is unaffected.
- Version 6.6.145, <= 6.6.* is unaffected.
- Version 6.12.96, <= 6.12.* is unaffected.
- Version 6.18.39, <= 6.18.* is unaffected.
- Version 7.1.4, <= 7.1.* is unaffected.
- Version 7.2-rc1, <= * is unaffected.