CVE-2026-53364CWE-401

CVE-2026-53364

Medium · published July 13, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
1.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00120 · 1.8th percentile
Weakness
CWE-401 · Missing Release of Memory after Effective Lifetime
Published
2026-07-13T22:16Z
Affected products (7)
ProductVersionsFixed in
linux/linux_kernel≥ 6.16.4, < 6.18.356.18.35
linux/linux_kernel≥ 6.19, < 7.0.127.0.12
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
References (4)
EPSS history
Timeline
  • 13 JUL 17:33Z
    Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate()
    cvelistv5