CVE-2026-53251

MediumCVSS 5.5/10Last modified Jul 8, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync

hci_get_route() returns a reference-counted hci_dev pointer via hci_dev_hold(). The function exits normally or with an error without ever releasing it.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Jun 25, 2026
Last modified
Jul 8, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-532525.5In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix memory leak in error path of hci_alloc_dev() Early failCVE-2026-532537.1In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: reject short frames before parsing A BNEP peer can seCVE-2026-532548.1In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: validate skb length in MCC handlers The RFCOMM MCC CVE-2026-532557.1In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate advertising TLV before type checks tlv_data_CVE-2026-532568.0In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() rfcommCVE-2026-532575.5In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: enforce HE/EHT cap/oper consistency Xiang Mei reports CVE-2026-532585.5In the Linux kernel, the following vulnerability has been resolved: wifi: fix leak if split 6 GHz scanning fails rdev->int_scan_req is leaCVE-2026-532597.8In the Linux kernel, the following vulnerability has been resolved: ipv6: anycast: insert aca into global hash under idev->lock syzbot repCVE-2026-53265.3A vulnerability was identified in SourceCodester Leave Application System 1.0. Impacted is an unknown function of the file /index.php?page=mCVE-2026-532609.8In the Linux kernel, the following vulnerability has been resolved: tcp: Add preempt_{disable,enable}_nested() in reqsk_queue_hash_req(). CVE-2026-532615.5In the Linux kernel, the following vulnerability has been resolved: devlink: Release nested relation on devlink free devlink relation statCVE-2026-532627.8In the Linux kernel, the following vulnerability has been resolved: l2tp: pppol2tp: hold reference to session in pppol2tp_ioctl() pppol2tp
CVE-2026-53251: Medium severity, CVSS 5.5 | Vulnix