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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-toolsUpgrade kernel-rt-debugUpgrade kernel-develUpgrade python3-perfUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-modules-extraUpgrade perfUpgrade kernel-docUpgrade kernel-rt-debug-develUpgrade kernel-rt-coreUpgrade kernel-rt-modulesUpgrade kernel-modulesUpgrade kernel-rtUpgrade kernel-modules-extraUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernel-zfcpdump-coreUpgrade kernel-debugUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-develUpgrade kernelUpgrade kernel-rt-debug-coreUpgrade kernel-rt-modules-extraUpgrade bpftoolUpgrade kernel-debug-modulesUpgrade kernel-zfcpdumpUpgrade kernel-headersUpgrade kernel-cross-headersUpgrade kernel-debug-develUpgrade kernel-zfcpdump-develUpgrade kernel-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-coreUpgrade kernel-zfcpdump-modules-extra | 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 kernel-rtNo solution existsUpgrade kernel | Oct 28, 2025 | Sep 16, 2025 |
| Rocky_linux | — | Upgrade python3-perfUpgrade kernel-debuginfoUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-modulesUpgrade kernel-tools-libsUpgrade kernel-rt-modules-extraUpgrade kernel-debug-coreUpgrade kernel-modules-extraUpgrade kernel-rt-coreUpgrade kernel-debugUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-debug-coreUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debug-kvmUpgrade kernel-develUpgrade kernel-debug-develUpgrade kernel-rt-debugUpgrade kernel-rt-debug-develUpgrade kernel-coreUpgrade kernelUpgrade kernel-modulesUpgrade kernel-rt-modulesUpgrade kernel-rt-debug-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rtUpgrade kernel-debug-debuginfoUpgrade kernel-rt-debuginfoUpgrade kernel-debug-modules-extraUpgrade python3-perf-debuginfoUpgrade kernel-toolsUpgrade kernel-rt-kvmUpgrade bpftoolUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-develUpgrade perfUpgrade perf-debuginfoUpgrade kernel-tools-libs-devel | Feb 5, 2026 | Nov 2, 2025 |
| Ubuntu | — | Upgrade linux-riscv-5.15Upgrade linux-intel-iotgUpgrade linux-fipsUpgrade linux-lowlatencyUpgrade linux-hwe-5.4Upgrade linux-kvmUpgrade linux-ibmUpgrade linux-iotUpgrade linux-oracle-5.15Upgrade linux-gcp-fipsUpgrade linux-gcp-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-nvidiaUpgrade linux-intel-iot-realtimeUpgrade linux-azure-5.4Upgrade linux-azure-5.15Upgrade linux-gcpUpgrade linux-aws-fipsUpgrade linux-azure-fipsUpgrade linux-nvidia-tegra-igxUpgrade linux-intel-iotg-5.15Upgrade linux-gkeopUpgrade linux-oracleUpgrade linux-gcp-5.4Upgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-aws-5.15Upgrade linux-raspi-5.4Upgrade linux-azure-fdeUpgrade linux-nvidia-tegraUpgrade linux-aws-5.4Upgrade linuxUpgrade linux-raspiUpgrade linux-gkeUpgrade linux-ibm-5.15Upgrade linux-realtimeUpgrade linux-oracle-5.4Upgrade linux-bluefieldUpgrade linux-awsUpgrade linux-lowlatency-hwe-5.15Upgrade linux-ibm-5.4Upgrade linux-nvidia-tegra-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 |
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