Memory Leak in Linux Kernel Bluetooth Module by Vendor Linux

CVE-2026-43021

What is CVE-2026-43021?

A vulnerability exists in the Linux kernel's Bluetooth module where the function hci_cmd_sync_queue_once can fail, leading to memory references not being properly destroyed. This can result in memory leaks during Bluetooth command processing, potentially impacting system performance and stability. A successful exploit could lead to unaddressed memory consumption, affecting overall system efficiency.

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