Vulnerability · Published Sep 16, 2025 · Assigned by Linux
CVE-2023-53297Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
High 8.8
In plain English
A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.2%top 87.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-core | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-debug | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-devel | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-doc | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-headers | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-modules | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-rt | 4.18.0-553.81.1.rt7.422.el8_10 | ALSA-2025:19103 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-553.81.1.rt7.422.el8_10 | ALSA-2025:19103 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-553.81.1.rt7.422.el8_10 | ALSA-2025:19103 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-553.81.1.rt7.422.el8_10 | ALSA-2025:19103 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-553.81.1.rt7.422.el8_10 | ALSA-2025:19103 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-553.81.1.rt7.422.el8_10 | ALSA-2025:19103 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-553.81.1.rt7.422.el8_10 | ALSA-2025:19103 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-553.81.1.rt7.422.el8_10 | ALSA-2025:19103 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-553.81.1.rt7.422.el8_10 | ALSA-2025:19103 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-553.81.1.rt7.422.el8_10 | ALSA-2025:19103 |
| AlmaLinux:8 | kernel-tools | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | perf | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| AlmaLinux:8 | python3-perf | 4.18.0-553.81.1.el8_10 | ALSA-2025:19102 |
| Debian:12 | linux | 6.1.37-1 | DEBIAN-CVE-2023-53297 |
| Debian:13 | linux | 6.3.7-1 | DEBIAN-CVE-2023-53297 |
| Debian:14 | linux | 6.3.7-1 | DEBIAN-CVE-2023-53297 |
| Rocky Linux:8 | kernel | 0:4.18.0-553.81.1.el8_10 | RLSA-2025:19102 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-553.81.1.rt7.422.el8_10 | RLSA-2025:19103 |
| Ubuntu:22.04:LTS | linux | 5.15.0-83.92 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1044.49 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1046.53 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1046.53.1 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1041.49 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1041.46 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1027.32 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1037.40 | UBUNTU-CVE-2023-53297 |
| Ubuntu:24.04:LTS | linux-intel | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1039.45 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1041.46 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-83.92 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1032.32 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1017.17 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1004.4 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1042.48 | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1037.40 | UBUNTU-CVE-2023-53297 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2023-53297 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2023-53297 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | f2d38e77aa5f3effc143e7dd24da8acf02925958 – before 5f352a56f0e607e6ff539cbf12156bfd8af232be1351551aa9058e07a20a27a158270cf84fcde621 – before 6a27762340ad08643de3bc17fe1646ea489ca2e2c02421992505c95c7f3c9ad59ee35e22eac60988 – before 2112c4c47d36bc5aba3ddeb9afedce6ae6a67e7dd9ba36c22a7bb09d6bac4cc2f243eff05da53f43 – before 55410a9144c76ecda126e6cdec556dfcd8f343b2ac6725a634f7e8c0330610a8527f20c730b61115 – before 116b9c002c894097adc2b8684db2d1da4229ed46348d446762e7c70778df8bafbdf3fa0df2123f58 – before fd269a0435f8e9943b7a57c5a59688848d42d449a2a9339e1c9deb7e1e079e12e27a0265aea8421a – before 5134556c9be582793f30695c09d18a26fe1ff2d7a2a9339e1c9deb7e1e079e12e27a0265aea8421a – before 25e97f7b1866e6b8503be349eeea44bb52d661ce |
| Linux | Linux | 6.3 |
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