CVE-2023-53297
Medium
Elevated severity or exploit probability.
CVSS base
8.8
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.2%
12.2th percentile
CISA KEV
Not listed
Weakness / dates
—
Published 2025-09-16 · modified 2026-08-04
CVSS breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | A | Adjacent |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2025-09-16 — Published (NVD)
- 2026-08-04 — Last modified (NVD)
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
References
- https://git.kernel.org/stable/c/116b9c002c894097adc2b8684db2d1da4229ed46
- https://git.kernel.org/stable/c/2112c4c47d36bc5aba3ddeb9afedce6ae6a67e7d
- https://git.kernel.org/stable/c/25e97f7b1866e6b8503be349eeea44bb52d661ce
- https://git.kernel.org/stable/c/5134556c9be582793f30695c09d18a26fe1ff2d7
- https://git.kernel.org/stable/c/55410a9144c76ecda126e6cdec556dfcd8f343b2
- https://git.kernel.org/stable/c/5f352a56f0e607e6ff539cbf12156bfd8af232be
- https://git.kernel.org/stable/c/6a27762340ad08643de3bc17fe1646ea489ca2e2
- https://git.kernel.org/stable/c/fd269a0435f8e9943b7a57c5a59688848d42d449