CVE-2026-64501
Description
A flaw was found in the Linux kernel's ad_sigma_delta driver for analog-to-digital converters (ADCs). This vulnerability occurs when the Chip Select (CS) line, which controls communication with the ADC, remains asserted after a conversion or in an error state. This can prevent other devices on the Serial Peripheral Interface (SPI) bus from communicating, leading to a denial of service. Additionally, improper handling of the bus lock can allow concurrent access to the SPI bus, potentially causing system instability.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (Other); DoS: Resource Consumption (Memory); DoS: Resource Consumption (CPU)
An attacker that can influence the allocation of resources that are not properly released could deplete the available resource pool and prevent all other processes from accessing the same type of resource. Frequently-affected resources include memory, CPU, disk space, power or battery, etc.
Frequently Asked Questions
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