CVE-2021-31615
No fix known EPSS <1%
Unencrypted Bluetooth Low Energy baseband links in Bluetooth Core Specifications 4.0 through 5.2 may permit an adjacent device to inject a crafted packet during the receive window of the listening device before the transmitting device initiates its packet transmission to achieve full MITM status without terminating the link. When applied against devices establishing or using encrypted links, crafted packets may be used to terminate an existing link, but will not compromise the confidentiality or integrity of the link.
Products: bluetooth_core_specification
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Arch Linux | linux | no fix |
| Ubuntu 16.04 LTS | linux-hwe-edge | no fix |
| Ubuntu 18.04 LTS | linux-aws-5.0 | no fix |
| Ubuntu 18.04 LTS | linux-aws-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-azure | no fix |
| Ubuntu 18.04 LTS | linux-azure-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-azure-edge | no fix |
| Ubuntu 18.04 LTS | linux-gcp | no fix |
| Ubuntu 18.04 LTS | linux-gcp-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-gcp-edge | no fix |
| Ubuntu 18.04 LTS | linux-gke-4.15 | no fix |
| Ubuntu 18.04 LTS | linux-gke-5.4 | no fix |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | no fix |
| Ubuntu 18.04 LTS | linux-hwe | no fix |
| Ubuntu 18.04 LTS | linux-hwe-edge | no fix |
| Ubuntu 18.04 LTS | linux-oem | no fix |
| Ubuntu 18.04 LTS | linux-oracle-5.0 | no fix |
| Ubuntu 18.04 LTS | linux-oracle-5.3 | no fix |
| Ubuntu 20.04 LTS | linux-aws-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-aws-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-aws-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-azure-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-azure-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-azure-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-azure-fde | no fix |
| Ubuntu 20.04 LTS | linux-gcp-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-gcp-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-gcp-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-gke | no fix |
| Ubuntu 20.04 LTS | linux-gke-5.15 | no fix |
| Ubuntu 20.04 LTS | linux-gkeop | no fix |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | no fix |
| Ubuntu 20.04 LTS | linux-hwe-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-hwe-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-hwe-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-intel-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-oem-5.10 | no fix |
| Ubuntu 20.04 LTS | linux-oem-5.14 | no fix |
| Ubuntu 20.04 LTS | linux-oem-5.6 | no fix |
| Ubuntu 20.04 LTS | linux-oracle-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-oracle-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-oracle-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-raspi2 | no fix |
| Ubuntu 20.04 LTS | linux-riscv | no fix |
| Ubuntu 20.04 LTS | linux-riscv-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-riscv-5.8 | no fix |
| Ubuntu 22.04 LTS | bluez | no fix |
| Ubuntu 22.04 LTS | linux | no fix |
| Ubuntu 22.04 LTS | linux-allwinner-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-aws | no fix |
| Ubuntu 22.04 LTS | linux-aws-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-aws-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-aws-6.5 | no fix |
| Ubuntu 22.04 LTS | linux-aws-6.8 | no fix |
| Ubuntu 22.04 LTS | linux-azure | no fix |
| Ubuntu 22.04 LTS | linux-azure-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-azure-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-azure-6.5 | no fix |
| Ubuntu 22.04 LTS | linux-azure-6.8 | no fix |
| Ubuntu 22.04 LTS | linux-azure-fde | no fix |
| Ubuntu 22.04 LTS | linux-azure-fde-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-azure-fde-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-azure-fde-6.8 | no fix |
| Ubuntu 22.04 LTS | linux-gcp | no fix |
| Ubuntu 22.04 LTS | linux-gcp-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-gcp-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-gcp-6.5 | no fix |
| Ubuntu 22.04 LTS | linux-gcp-6.8 | no fix |
| Ubuntu 22.04 LTS | linux-gke | no fix |
| Ubuntu 22.04 LTS | linux-gkeop | no fix |
| Ubuntu 22.04 LTS | linux-hwe-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-hwe-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-hwe-6.5 | no fix |
| Ubuntu 22.04 LTS | linux-hwe-6.8 | no fix |
| Ubuntu 22.04 LTS | linux-ibm | no fix |
| Ubuntu 22.04 LTS | linux-ibm-6.8 | no fix |
| Ubuntu 22.04 LTS | linux-intel-iot-realtime | no fix |
| Ubuntu 22.04 LTS | linux-intel-iotg | no fix |
| Ubuntu 22.04 LTS | linux-kvm | no fix |
| Ubuntu 22.04 LTS | linux-lowlatency | no fix |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.5 | no fix |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.8 | no fix |
| Ubuntu 22.04 LTS | linux-nvidia | no fix |
| Ubuntu 22.04 LTS | linux-nvidia-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-nvidia-6.5 | no fix |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | no fix |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | no fix |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | no fix |
| Ubuntu 22.04 LTS | linux-oem-5.17 | no fix |
| Ubuntu 22.04 LTS | linux-oem-6.0 | no fix |
| Ubuntu 22.04 LTS | linux-oem-6.1 | no fix |
| Ubuntu 22.04 LTS | linux-oem-6.5 | no fix |
| Ubuntu 22.04 LTS | linux-oracle | no fix |
| Ubuntu 22.04 LTS | linux-oracle-6.5 | no fix |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | no fix |
| Ubuntu 22.04 LTS | linux-raspi | no fix |
| Ubuntu 22.04 LTS | linux-realtime | no fix |
| Ubuntu 22.04 LTS | linux-riscv | no fix |
| Ubuntu 22.04 LTS | linux-riscv-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-riscv-6.5 | no fix |
| Ubuntu 22.04 LTS | linux-riscv-6.8 | no fix |
| Ubuntu 22.04 LTS | linux-starfive-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-starfive-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-starfive-6.5 | no fix |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | no fix |
| Ubuntu 24.04 LTS | bluez | no fix |
| Ubuntu 24.04 LTS | linux | no fix |
| Ubuntu 24.04 LTS | linux-aws | no fix |
| Ubuntu 24.04 LTS | linux-aws-6.14 | no fix |
| Ubuntu 24.04 LTS | linux-aws-6.17 | no fix |
| Ubuntu 24.04 LTS | linux-azure | no fix |
| Ubuntu 24.04 LTS | linux-azure-6.11 | no fix |
| Ubuntu 24.04 LTS | linux-azure-6.14 | no fix |
| Ubuntu 24.04 LTS | linux-azure-6.17 | no fix |
| Ubuntu 24.04 LTS | linux-azure-fde | no fix |
| Ubuntu 24.04 LTS | linux-azure-fde-6.14 | no fix |
| Ubuntu 24.04 LTS | linux-azure-fde-6.17 | no fix |
| Ubuntu 24.04 LTS | linux-azure-nvidia | no fix |
| Ubuntu 24.04 LTS | linux-azure-nvidia-6.14 | no fix |
| Ubuntu 24.04 LTS | linux-gcp | no fix |
| Ubuntu 24.04 LTS | linux-gcp-6.11 | no fix |
| Ubuntu 24.04 LTS | linux-gcp-6.14 | no fix |
| Ubuntu 24.04 LTS | linux-gcp-6.17 | no fix |
| Ubuntu 24.04 LTS | linux-gke | no fix |
| Ubuntu 24.04 LTS | linux-gkeop | no fix |
| Ubuntu 24.04 LTS | linux-hwe-6.11 | no fix |
| Ubuntu 24.04 LTS | linux-hwe-6.14 | no fix |
| Ubuntu 24.04 LTS | linux-hwe-6.17 | no fix |
| Ubuntu 24.04 LTS | linux-ibm | no fix |
| Ubuntu 24.04 LTS | linux-intel | no fix |
| Ubuntu 24.04 LTS | linux-lowlatency | no fix |
| Ubuntu 24.04 LTS | linux-lowlatency-hwe-6.11 | no fix |
| Ubuntu 24.04 LTS | linux-nvidia | no fix |
| Ubuntu 24.04 LTS | linux-nvidia-6.11 | no fix |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | no fix |
| Ubuntu 24.04 LTS | linux-nvidia-tegra | no fix |
| Ubuntu 24.04 LTS | linux-oem-6.11 | no fix |
| Ubuntu 24.04 LTS | linux-oem-6.14 | no fix |
| Ubuntu 24.04 LTS | linux-oem-6.17 | no fix |
| Ubuntu 24.04 LTS | linux-oem-6.8 | no fix |
| Ubuntu 24.04 LTS | linux-oracle | no fix |
| Ubuntu 24.04 LTS | linux-oracle-6.14 | no fix |
| Ubuntu 24.04 LTS | linux-oracle-6.17 | no fix |
| Ubuntu 24.04 LTS | linux-raspi | no fix |
| Ubuntu 24.04 LTS | linux-raspi-realtime | no fix |
| Ubuntu 24.04 LTS | linux-realtime | no fix |
| Ubuntu 24.04 LTS | linux-riscv | no fix |
| Ubuntu 24.04 LTS | linux-riscv-6.14 | no fix |
| Ubuntu 24.04 LTS | linux-riscv-6.17 | no fix |
| Ubuntu 24.04 LTS | linux-xilinx | no fix |
| Ubuntu 25.10 | bluez | no fix |
| Ubuntu 25.10 | linux | no fix |
| Ubuntu 25.10 | linux-aws | no fix |
| Ubuntu 25.10 | linux-azure | no fix |
| Ubuntu 25.10 | linux-azure-fde | no fix |
| Ubuntu 25.10 | linux-gcp | no fix |
| Ubuntu 25.10 | linux-oracle | no fix |
| Ubuntu 25.10 | linux-raspi | no fix |
| Ubuntu 25.10 | linux-realtime | no fix |
| Ubuntu 25.10 | linux-riscv | no fix |
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | no fix |
| Ubuntu Pro 14.04 LTS | linux | no fix |
| Ubuntu Pro 14.04 LTS | linux-aws | no fix |
| Ubuntu Pro 14.04 LTS | linux-azure | no fix |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | no fix |
| Ubuntu Pro 16.04 LTS | bluez | no fix |
| Ubuntu Pro 16.04 LTS | linux | no fix |
| Ubuntu Pro 16.04 LTS | linux-aws | no fix |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | no fix |
| Ubuntu Pro 16.04 LTS | linux-azure | no fix |
| Ubuntu Pro 16.04 LTS | linux-gcp | no fix |
| Ubuntu Pro 16.04 LTS | linux-hwe | no fix |
| Ubuntu Pro 16.04 LTS | linux-kvm | no fix |
| Ubuntu Pro 16.04 LTS | linux-oracle | no fix |
| Ubuntu Pro 18.04 LTS | bluez | no fix |
| Ubuntu Pro 18.04 LTS | linux | no fix |
| Ubuntu Pro 18.04 LTS | linux-aws | no fix |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 | no fix |
| Ubuntu Pro 18.04 LTS | linux-azure-4.15 | no fix |
| Ubuntu Pro 18.04 LTS | linux-azure-5.4 | no fix |
| Ubuntu Pro 18.04 LTS | linux-gcp-4.15 | no fix |
| Ubuntu Pro 18.04 LTS | linux-gcp-5.4 | no fix |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | no fix |
| Ubuntu Pro 18.04 LTS | linux-ibm-5.4 | no fix |
| Ubuntu Pro 18.04 LTS | linux-kvm | no fix |
| Ubuntu Pro 18.04 LTS | linux-oracle | no fix |
| Ubuntu Pro 18.04 LTS | linux-oracle-5.4 | no fix |
| Ubuntu Pro 18.04 LTS | linux-raspi-5.4 | no fix |
| Ubuntu Pro 20.04 LTS | bluez | no fix |
| Ubuntu Pro 20.04 LTS | linux | no fix |
| Ubuntu Pro 20.04 LTS | linux-aws | no fix |
| Ubuntu Pro 20.04 LTS | linux-aws-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-azure | no fix |
| Ubuntu Pro 20.04 LTS | linux-azure-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-bluefield | no fix |
| Ubuntu Pro 20.04 LTS | linux-gcp | no fix |
| Ubuntu Pro 20.04 LTS | linux-gcp-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-hwe-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-ibm | no fix |
| Ubuntu Pro 20.04 LTS | linux-ibm-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-intel-iotg-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-iot | no fix |
| Ubuntu Pro 20.04 LTS | linux-kvm | no fix |
| Ubuntu Pro 20.04 LTS | linux-lowlatency-hwe-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-nvidia-tegra-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-oracle | no fix |
| Ubuntu Pro 20.04 LTS | linux-oracle-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-raspi | no fix |
| Ubuntu Pro 20.04 LTS | linux-riscv-5.15 | no fix |
| Ubuntu Pro 20.04 LTS | linux-xilinx-zynqmp | no fix |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-aws-fips | no fix |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-azure-fips | no fix |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-gcp-fips | no fix |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | no fix |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | no fix |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | no fix |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | no fix |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | no fix |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | no fix |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | no fix |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | no fix |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | no fix |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-aws-fips | no fix |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-azure-fips | no fix |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-gcp-fips | no fix |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips | no fix |
| Ubuntu Pro FIPS 18.04 LTS | linux-azure-fips | no fix |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS 18.04 LTS | linux-gcp-fips | no fix |
| Ubuntu Pro FIPS 20.04 LTS | linux-aws-fips | no fix |
| Ubuntu Pro FIPS 20.04 LTS | linux-azure-fips | no fix |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS 20.04 LTS | linux-gcp-fips | no fix |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | no fix |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | no fix |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | no fix |
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | no fix |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | no fix |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.14 | no fix |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.17 | no fix |