CVE-2026-64023
Description
A flaw was found in the Linux kernel's GPIO (General Purpose Input/Output) aggregator module. This vulnerability occurs when an error condition causes memory to be prematurely freed while still being referenced in a lookup table. A local attacker could potentially exploit this timing issue, leading to a use-after-free condition. This could result in a system crash or other unpredictable behavior, impacting system stability.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the expired pointer is used in a read operation, an attacker might be able to control data read in by the application.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the expired 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 expired 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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