CVE-2023-53297

MEDIUM EPSS 3.5%
Published Sep 16, 20259mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 16, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
3.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel* <4.14.316
linuxlinux_kernel*≥4.15  –  <4.19.284
linuxlinux_kernel*≥4.20  –  <5.4.244
linuxlinux_kernel*≥5.5  –  <5.10.181
linuxlinux_kernel*≥5.11  –  <5.15.113
linuxlinux_kernel*≥5.16  –  <6.1.30
linuxlinux_kernel*≥6.2  –  <6.3.4

References 8

  • git.kernel.org https://git.kernel.org/stable/c/116b9c002c894097adc2b8684db2d1da4229ed46
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2112c4c47d36bc5aba3ddeb9afedce6ae6a67e7d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/25e97f7b1866e6b8503be349eeea44bb52d661ce
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5134556c9be582793f30695c09d18a26fe1ff2d7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/55410a9144c76ecda126e6cdec556dfcd8f343b2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5f352a56f0e607e6ff539cbf12156bfd8af232be
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6a27762340ad08643de3bc17fe1646ea489ca2e2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fd269a0435f8e9943b7a57c5a59688848d42d449
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/116b9c002c894097adc2b8684db2d1da4229ed46
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2112c4c47d36bc5aba3ddeb9afedce6ae6a67e7d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/25e97f7b1866e6b8503be349eeea44bb52d661ce
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5134556c9be582793f30695c09d18a26fe1ff2d7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/55410a9144c76ecda126e6cdec556dfcd8f343b2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5f352a56f0e607e6ff539cbf12156bfd8af232be
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6a27762340ad08643de3bc17fe1646ea489ca2e2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fd269a0435f8e9943b7a57c5a59688848d42d449
    Patch