CVE-2026-68225
Description
A flaw was found in the Linux kernel's media I2C Alvium driver. The alvium_ctrl_init function, responsible for initializing controls, does not properly check if pointers are valid before using them. This can lead to the system attempting to write data to an invalid memory location, which could allow a local attacker to cause a system crash and result in a denial of service.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Crash, Exit, or Restart
NULL pointer dereferences usually result in the failure of the process unless exception handling (on some platforms) is available and implemented. Even when exception handling is being used, it can still be very difficult to return the software to a safe state of operation.
Integrity,Confidentiality
Technical Impact: Execute Unauthorized Code or Commands; Read Memory; Modify Memory
In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution.
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