CVE-2023-53297: linux kernel — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

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

Affected Products

Vendor	Product	Versions
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

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2023-53297? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-53297? +

CVE-2023-53297 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-53297? +

CVE-2023-53297 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-53297? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-53297