Bug 2499748 (CVE-2026-53364) - CVE-2026-53364 kernel: Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate()
Summary: CVE-2026-53364 kernel: Bluetooth: hci_conn: Fix memory leak in hci_le_big_ter...
Keywords:
Status: NEW
Alias: CVE-2026-53364
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-13 18:02 UTC by OSIDB Bzimport
Modified: 2026-07-14 11:16 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-07-13 18:02:16 UTC
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.

Comment 1 Mauro Matteo Cascella 2026-07-14 11:10:23 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026071352-CVE-2026-53364-de64@gregkh/T


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