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
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-rt-debug-modules-extraUpgrade kernel-tools-libs-develUpgrade python3-perfUpgrade kernel-toolsUpgrade kernel-rt-debug-develUpgrade perfUpgrade kernel-rt-modulesUpgrade kernel-rt-debugUpgrade kernel-modulesUpgrade kernel-rtUpgrade kernel-develUpgrade kernel-docUpgrade kernel-rt-coreUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-develUpgrade bpftoolUpgrade kernel-zfcpdump-develUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernel-rt-modules-extraUpgrade kernel-coreUpgrade kernel-debugUpgrade kernel-headersUpgrade kernel-cross-headersUpgrade kernel-debug-develUpgrade kernel-zfcpdump-modulesUpgrade kernelUpgrade kernel-zfcpdump-coreUpgrade kernel-modules-extraUpgrade kernel-debug-modules-extraUpgrade kernel-debug-coreUpgrade kernel-zfcpdumpUpgrade kernel-rt-debug-coreUpgrade kernel-debug-modules | Oct 29, 2025 | Oct 27, 2025 |
| Debian | — | Upgrade linux | Sep 18, 2025 | Sep 18, 2025 |
| Oracle_linux | — | Upgrade kernel | Oct 29, 2025 | Sep 16, 2025 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Oct 28, 2025 | Sep 16, 2025 |
| Rocky_linux | — | Upgrade kernel-tools-libsUpgrade kernel-debugUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfoUpgrade kernel-rt-debug-coreUpgrade kernel-modules-extraUpgrade kernel-rt-debug-kvmUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-modulesUpgrade kernel-debug-coreUpgrade python3-perfUpgrade kernelUpgrade kernel-coreUpgrade kernel-rt-coreUpgrade kernel-debug-develUpgrade kernel-modulesUpgrade kernel-develUpgrade kernel-rt-debug-develUpgrade kernel-rt-debugUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debug-modulesUpgrade kernel-rtUpgrade kernel-rt-debug-modules-extraUpgrade kernel-toolsUpgrade kernel-rt-debug-debuginfoUpgrade kernel-rt-debuginfoUpgrade perf-debuginfoUpgrade kernel-tools-libs-develUpgrade kernel-rt-debuginfo-common-x86_64Upgrade perfUpgrade kernel-rt-develUpgrade bpftoolUpgrade python3-perf-debuginfoUpgrade kernel-debug-modules-extraUpgrade kernel-rt-kvmUpgrade kernel-debug-debuginfoUpgrade kernel-rt-modulesUpgrade bpftool-debuginfo | Feb 5, 2026 | Nov 2, 2025 |
| Ubuntu | — | Upgrade linux-oracle-5.4Upgrade linux-raspiUpgrade linux-hwe-5.15Upgrade linux-ibm-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-ibm-5.4Upgrade linux-nvidia-tegraUpgrade linux-bluefieldUpgrade linux-realtimeUpgrade linux-awsUpgrade linux-aws-5.4Upgrade linux-nvidia-tegra-5.15Upgrade linuxUpgrade linux-gkeUpgrade linux-aws-5.15Upgrade linux-raspi-5.4Upgrade linux-gcp-5.4Upgrade linux-fipsUpgrade linux-nvidiaUpgrade linux-gcpUpgrade linux-ibmUpgrade linux-gcp-fipsUpgrade linux-azure-5.15Upgrade linux-aws-fipsUpgrade linux-intel-iotg-5.15Upgrade linux-azure-fde-5.15Upgrade linux-intel-iot-realtimeUpgrade linux-hwe-5.4Upgrade linux-lowlatencyUpgrade linux-azure-5.4Upgrade linux-oracleUpgrade linux-iotUpgrade linux-xilinx-zynqmpUpgrade linux-azureUpgrade linux-gkeopUpgrade linux-gcp-5.15Upgrade linux-azure-fipsUpgrade linux-kvmUpgrade linux-nvidia-tegra-igxUpgrade linux-intel-iotgUpgrade linux-riscv-5.15Upgrade linux-oracle-5.15 | Sep 19, 2025 | Sep 17, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Sep 16, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub