Threats Tagged 'cve-2026-53364'

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate() hci_le_big_terminate() allocates iso_list_data via kzalloc_obj but returns 0 without freeing it when neither pa_sync_term nor big_sync_term flags are set after evaluating the PA and BIG sync connection state. This early-return path was introduced when hci_le_big_terminate() was refactored to take struct hci_conn instead of raw u8 parameters, adding PA/BIG flag evaluation logic. The existing kfree() on hci_cmd_sync_queue failure does not cover this path.

A memory leak vulnerability was identified and resolved in the Linux kernel's Bluetooth component, specifically in the hci_le_big_terminate() function. The function allocates memory but may return early without freeing it under certain conditions related to PA and BIG sync termination flags. This flaw was introduced during a refactor that changed parameter handling and added new flag evaluation logic. The vulnerability is categorized as CWE-401 (memory leak) and has a medium severity impact due to potential resource exhaustion.