CVE-2026-53251

MEDIUM

Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync

Title source: cna

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.

References (4)

Core 4

Core References

https://git.kernel.org/stable/c/4bbec25f47b930101294fd310c627c3f53e9661f

https://git.kernel.org/stable/c/33d677d2e3713d98012c3dbd4a9207f7d785b854

https://git.kernel.org/stable/c/23e8eb16820b866528fb300dc67fe3f67f00ef62

https://git.kernel.org/stable/c/5cbf290b79351971f20c7a533247e8d58a3f970c

Scores

CVSS v3 5.5

EPSS 0.0013

EPSS Percentile 2.8%

Attack Vector LOCAL

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

Details

CWE

CWE-772

Status published

Products (17)

linux/Kernel < 6.12.94linux

linux/Kernel 6.13.0 - 7.0.13linux

Linux/Linux < 6.13

Linux/Linux 07a9342b94a91b306ed1cf6aa8254aea210764c9 - 23e8eb16820b866528fb300dc67fe3f67f00ef62

Linux/Linux 07a9342b94a91b306ed1cf6aa8254aea210764c9 - 33d677d2e3713d98012c3dbd4a9207f7d785b854

Linux/Linux 07a9342b94a91b306ed1cf6aa8254aea210764c9 - 5cbf290b79351971f20c7a533247e8d58a3f970c

Linux/Linux 1360e5b6ce63d63d23223a659ca2bbafa30a53aa - 4bbec25f47b930101294fd310c627c3f53e9661f

Linux/Linux 6.11.11 - 6.12

Linux/Linux 6.12.2 - 6.12.94

Linux/Linux 6.12.94 - 6.12.*

... and 7 more

Published Jun 25, 2026

Tracked Since Jun 25, 2026