CVE-2026-53364

🔶 medium

Summary

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 eva

Description

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.

CVSS Score

5.5

Medium

EPSS Score

0.1

Exploit Probability

Published Date

2026-07-13

First Seen: 2026-07-14

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 32.3% of all 338,287 vulnerabilities in our database.

#228,916

Below average severity

Severity Percentile

Last Modified 2026-07-22

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE IDs (Weakness Types)

CWE-401

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
linux	linux_kernel	Affected	> 6.16.4 < 6.18.35
linux	linux_kernel	Affected	> 6.19 < 7.0.12
linux	linux_kernel	Affected	v7.1

🔗 References 3

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-53366	⚠️ high	7.8	0.2	In the Linux kernel, the following vulnerability has been resolved: ipv4: account for fraggap on the paged allocation p...	2026-07-16
CVE-2026-53365	🔶 medium	5.5	0.1	In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix zerocopy completion for multi-skb...	2026-07-13
CVE-2026-53363	⛔ critical	9.8	0.3	In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: preserve shared-frag marker in iptfs_c...	2026-07-10
CVE-2026-53359	⚠️ high	8.8	0.9	In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fix shadow paging use-after-free due to u...	2026-07-04
CVE-2026-53360	⚠️ high	8.8	0.2	In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Require in-GHCB scratch area if GHCB v2+ ...	2026-07-04
CVE-2026-53361	⚠️ high	7.1	0.1	In the Linux kernel, the following vulnerability has been resolved: af_unix: Set gc_in_progress to true in unix_gc(). ...	2026-07-04

These CVEs affect the same products