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.
Affected versions
Linux kernel versions
6.16.4,
6.17
and later are affected. Fixed in
6.18.35,
7.0.12,
7.1
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-53364?
CVE-2026-53364 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.16.4 onward and has been patched in 6.18.35, 7.0.12 and 7.1. CVE-2026-53364 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-53364?
Yes — CVE-2026-53364 has been patched. Fixed versions include 6.18.35, 7.0.12 and 7.1. If you are running Linux kernel 6.16.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-53364 actively exploited?
No — CVE-2026-53364 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.