CVEvulnerability

CVE-2023-53297

5.5 MEDIUM Published 2025-09-16 Modified 2026-08-04 Official page ↗
Status
Modified
Published
2025-09-16
Last modified
2026-08-04
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
8.8 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp conn->chan_lock isn't acquired before l2cap_get_chan_by_scid, if l2cap_get_chan_by_scid returns NULL, then 'bad unlock balance' is triggered.

Affected configurations

• linux linux kernel (< 4.14.316) • linux linux kernel (>= 4.15 < 4.19.284) • linux linux kernel (>= 4.20 < 5.4.244) • linux linux kernel (>= 5.5 < 5.10.181) • linux linux kernel (>= 5.11 < 5.15.113) • linux linux kernel (>= 5.16 < 6.1.30) • linux linux kernel (>= 6.2 < 6.3.4)

References