In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix potential user-after-free
This fixes all instances of which requires to allocate a buffer calling alloc_skb which may release the chan lock and reacquire later which makes it possible that the chan is disconnected in the meantime.
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 |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-toolsUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade kernel-tools-develUpgrade kernel-develUpgrade kernel-livepatch-4.14.309-231.529Upgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade perfUpgrade kernel | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-tools-libs | Mar 10, 2026 | Mar 10, 2026 |
| Redhat_linux | — | No solution existsUpgrade kernelUpgrade kernel-rt | Jul 17, 2026 | Dec 30, 2025 |
| Rocky_linux | — | Upgrade kernel-modules-extraUpgrade perfUpgrade perf-debuginfoUpgrade kernel-coreUpgrade python3-perf-debuginfoUpgrade bpftoolUpgrade python3-perfUpgrade kernel-modulesUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debugUpgrade kernel-tools-debuginfoUpgrade kernel-debug-develUpgrade kernel-rt-develUpgrade kernel-rt-kvmUpgrade kernel-rt-coreUpgrade kernel-debugUpgrade kernel-debug-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-develUpgrade kernel-debuginfoUpgrade kernel-rt-debuginfoUpgrade kernel-rt-modulesUpgrade kernel-rt-debug-coreUpgrade kernel-rt-modules-extraUpgrade kernel-debug-modules-extraUpgrade kernel-rtUpgrade kernel-toolsUpgrade kernel-debug-debuginfoUpgrade kernelUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-develUpgrade kernel-rt-debug-kvmUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-modulesUpgrade bpftool-debuginfoUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-debug-debuginfoUpgrade kernel-tools-libs | Sep 28, 2026 | Sep 24, 2026 |
| Ubuntu | — | Upgrade linux-hwe-5.4Upgrade linux-aws-fipsUpgrade linux-azure-5.15Upgrade linux-nvidiaUpgrade linux-bluefieldUpgrade linux-riscv-5.15Upgrade linux-oracle-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-gcpUpgrade linux-gcp-5.15Upgrade linux-oracleUpgrade linux-gkeUpgrade linux-azure-fdeUpgrade linux-intel-iot-realtimeUpgrade linux-intel-iotgUpgrade linux-realtimeUpgrade linux-aws-5.15Upgrade linux-kvmUpgrade linux-raspi-5.4Upgrade linux-lowlatency-hwe-5.15Upgrade linux-gcp-fipsUpgrade linux-oracle-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-fipsUpgrade linux-ibmUpgrade linux-lowlatencyUpgrade linux-gcp-5.4Upgrade linux-awsUpgrade linux-hwe-5.15Upgrade linux-gkeopUpgrade linux-nvidia-tegra-5.15Upgrade linux-aws-5.4Upgrade linux-iotUpgrade linux-azure-5.4Upgrade linux-nvidia-tegraUpgrade linux-azure-fipsUpgrade linux-azureUpgrade linuxUpgrade linux-raspiUpgrade linux-ibm-5.4 | Jan 6, 2026 | Jan 2, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 30, 2025 |
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