CVE-2026-45869
Description
A flaw was found in the Linux kernel, specifically within the wm97xx power supply driver. A timing issue, known as a race condition, can occur during the driver's setup. If an interrupt is triggered at a precise moment, it can cause the system to attempt to use an uninitialized memory pointer, leading to a NULL pointer dereference. This vulnerability could allow a local attacker to crash the system, resulting in a Denial of Service (DoS).
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the uninitialized pointer is used in a read operation, an attacker might be able to read sensitive portions of memory.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the uninitialized pointer references a memory location that is not accessible to the product, or points to a location that is "malformed" (such as NULL) or larger than expected by a read or write operation, then a crash may occur.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If the uninitialized pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
Frequently Asked Questions
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