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Status published
Unknown
CVE-2023-53297
Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://git.kernel.org/stable/c/5f352a56f0e607e6ff539cbf12156bfd8af232be
- https://git.kernel.org/stable/c/6a27762340ad08643de3bc17fe1646ea489ca2e2
- https://git.kernel.org/stable/c/2112c4c47d36bc5aba3ddeb9afedce6ae6a67e7d
- https://git.kernel.org/stable/c/55410a9144c76ecda126e6cdec556dfcd8f343b2
- https://git.kernel.org/stable/c/116b9c002c894097adc2b8684db2d1da4229ed46
- https://git.kernel.org/stable/c/fd269a0435f8e9943b7a57c5a59688848d42d449
- https://git.kernel.org/stable/c/5134556c9be582793f30695c09d18a26fe1ff2d7
- https://git.kernel.org/stable/c/25e97f7b1866e6b8503be349eeea44bb52d661ce
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Affected Vendor
Linux
View all reports →Affected Software
Linux
Vulnerable Versions:
f2d38e77aa5f3effc143e7dd24da8acf02925958, 1351551aa9058e07a20a27a158270cf84fcde621, c02421992505c95c7f3c9ad59ee35e22eac60988, d9ba36c22a7bb09d6bac4cc2f243eff05da53f43, ac6725a634f7e8c0330610a8527f20c730b61115, 348d446762e7c70778df8bafbdf3fa0df2123f58, a2a9339e1c9deb7e1e079e12e27a0265aea8421a, d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284, 4.14.313, 4.19.281, 5.4.241, 5.10.178, 5.15.108, 6.1.25, 6.2.12, 6.3, 0, 4.14.316, 4.19.284, 5.4.244, 5.10.181, 5.15.113, 6.1.30, 6.3.4, 6.4
Timeline
Official Publish:
September 16th, 2025
Last Modified:
May 23rd, 2026
Added to House:
July 22nd, 2026
CVSS Vectors
No vector data available
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.