CVE-2026-64497

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux64b3d8b1b0f5c16c19045785e4da8391ae35ec99 < 0ccff849bde90973e6c13a666f6ceab5c55b30d4affected
LinuxLinux64b3d8b1b0f5c16c19045785e4da8391ae35ec99 < 1821bcacd8ac5b214c53be16cbb8172bf193f0b6affected
LinuxLinux64b3d8b1b0f5c16c19045785e4da8391ae35ec99 < 40bb0fdb37f441c9c9f52bf58bbd8a0ca3cc9598affected
LinuxLinux64b3d8b1b0f5c16c19045785e4da8391ae35ec99 < b131f0011dfef72350f4e3f11df94dc3e6b46065affected
LinuxLinux64b3d8b1b0f5c16c19045785e4da8391ae35ec99 < 8d4a46e971cf846bda98b20d4cabfa21c1276e5faffected
LinuxLinux64b3d8b1b0f5c16c19045785e4da8391ae35ec99 < 82accdd57404399eddf3d56fd9beda7c61307388affected
LinuxLinux64b3d8b1b0f5c16c19045785e4da8391ae35ec99 < d49ff54b2784aa56a7c97982de713604de89d23aaffected
LinuxLinux64b3d8b1b0f5c16c19045785e4da8391ae35ec99 < 60d877910a43c305b5165131b258a17b1d772d57affected
LinuxLinux5.9affected
LinuxLinux0 < 5.9unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.96 <= 6.12.*unaffected
LinuxLinux6.18.39 <= 6.18.*unaffected
LinuxLinux7.1.4 <= 7.1.*unaffected
LinuxLinux7.2-rc1 <= *unaffected

Weaknesses

References