CVE-2026-53251
Not scored
Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync
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.
Exploit probability
0.1%
Published
June 25, 2026
Required by
Not available
Last source change
August 15, 2026
02 / AFFECTED SOFTWARE
Affected packages
937 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2026-53251
View original source
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/23e8eb16820b866528fb300dc67fe3f67f00ef62
- https://git.kernel.org/stable/c/33d677d2e3713d98012c3dbd4a9207f7d785b854
- https://git.kernel.org/stable/c/4bbec25f47b930101294fd310c627c3f53e9661f
- https://git.kernel.org/stable/c/5cbf290b79351971f20c7a533247e8d58a3f970c
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53251.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-53251