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.

A flaw was found in the Linux kernel's iio: chemical: scd30 driver, which manages a specific type of sensor. This vulnerability involves an error in how the driver processes numerical data, specifically a 'sign-extension bug' that can corrupt a part of a floating-point number called the exponent. This corruption could lead to the sensor providing inaccurate readings or cause the system to behave unexpectedly.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-64497 https://nvd.nist.gov/vuln/detail/CVE-2026-64497 https://lore.kernel.org/linux-cve-announce/2026072551-CVE-2026-64497-00c3@gregkh/T