CVE-2026-74733
Description
A flaw was found in the Linux kernel's gpio: pca953x driver, which manages General Purpose Input/Output (GPIO) expanders. The driver uses its own locking mechanism, but the pca953x_irq_bus_sync_unlock() function failed to acquire the necessary lock when performing register operations. This oversight could allow multiple threads to concurrently access and modify registers, leading to incorrect data being read or written. Such a race condition could result in unpredictable system behavior or data corruption.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Integrity,Availability
Technical Impact: Modify Application Data; DoS: Instability; DoS: Crash, Exit, or Restart
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