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Vulnerability · Published Dec 8, 2025 · Assigned by Linux

CVE-2025-40318Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once

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 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.3%top 80.7% 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: hci_sync: fix race in hci_cmd_sync_dequeue_once hci_cmd_sync_dequeue_once() does lookup and then cancel the entry under two separate lock sections. Meanwhile, hci_cmd_sync_work() can also delete the same entry, leading to double list_del() and "UAF". Fix this by holding cmd_sync_work_lock across both lookup and cancel, so that the entry cannot be removed concurrently.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:9kernel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-debug5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-debug-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-debug-devel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-debug-devel-matched5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-debug-modules5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-debug-modules-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-debug-modules-extra5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-devel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-devel-matched5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-modules5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-modules-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-64k-modules-extra5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:10kernel-abi-stablelists6.12.0-124.31.1.el10_1ALSA-2026:1690
AlmaLinux:9kernel-abi-stablelists5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-cross-headers5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-debug5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-debug-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-debug-devel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-debug-devel-matched5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-debug-modules5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-debug-modules-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-debug-modules-extra5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-debug-uki-virt5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-devel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-devel-matched5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:10kernel-doc6.12.0-124.31.1.el10_1ALSA-2026:1690
AlmaLinux:9kernel-doc5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-headers5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-modules5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-modules-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-modules-extra5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-debug5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-debug-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-debug-devel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-debug-modules5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-debug-modules-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-debug-modules-extra5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-devel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-modules5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-modules-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-64k-modules-extra5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-debug5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-debug-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-debug-devel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-debug-modules5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-debug-modules-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-debug-modules-extra5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-devel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-modules5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-modules-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-rt-modules-extra5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-tools5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-tools-libs5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-tools-libs-devel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-uki-virt5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-uki-virt-addons5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-zfcpdump5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-zfcpdump-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-zfcpdump-devel5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-zfcpdump-devel-matched5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-zfcpdump-modules5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-zfcpdump-modules-core5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9kernel-zfcpdump-modules-extra5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9libperf5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9perf5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9python3-perf5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9rtla5.14.0-611.30.1.el9_7ALSA-2026:2212
AlmaLinux:9rv5.14.0-611.30.1.el9_7ALSA-2026:2212
Debian:12linux6.1.159-1DEBIAN-CVE-2025-40318
Debian:13linux6.12.63-1DEBIAN-CVE-2025-40318
Debian:14linux6.17.8-1DEBIAN-CVE-2025-40318
Rocky Linux:10kernel0:6.12.0-124.31.1.el10_1RLSA-2026:1690
Rocky Linux:9kernel0:5.14.0-611.30.1.el9_7RLSA-2026:2212
Ubuntu:24.04:LTSlinux6.8.0-106.106UBUNTU-CVE-2025-40318
Ubuntu:25.10linux6.17.0-14.14UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-aws6.8.0-1050.53UBUNTU-CVE-2025-40318
Ubuntu:25.10linux-aws6.17.0-1007.7UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-aws-6.176.17.0-1007.7~24.04.1UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1050.53~22.04.1UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-azure6.8.0-1051.57UBUNTU-CVE-2025-40318
Ubuntu:25.10linux-azure6.17.0-1008.8UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1051.57~22.04.1UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2025-40318
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-gcp6.8.0-1052.55UBUNTU-CVE-2025-40318
Ubuntu:25.10linux-gcp6.17.0-1007.7UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1008.8~24.04.1UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1052.55~22.04.1UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-gke6.8.0-1048.53UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1035.38UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-106.106~22.04.1UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-ibm6.8.0-1049.49UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1049.49~22.04.1UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-106.106.1UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-106.106.1~22.04.1UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1049.52UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1008.8UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1049.52~22.04.1UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1049.52.1UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1020.20UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1011.11UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-oracle6.8.0-1047.48UBUNTU-CVE-2025-40318
Ubuntu:25.10linux-oracle6.17.0-1007.7UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1007.7~24.04.1UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1047.48~22.04.1UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-raspi6.8.0-1050.54UBUNTU-CVE-2025-40318
Ubuntu:25.10linux-raspi6.17.0-1008.8UBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-40318
Ubuntu:25.10linux-realtime6.17.0-1006.7UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-40318
Ubuntu:25.10linux-riscv6.17.0-14.14.1UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-106.106~22.04.1UBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-40318
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-40318
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1028.29UBUNTU-CVE-2025-40318

Affected products (as reported)

VendorProductVersions
Linux Linux f00f36db76eb8fd10d13e80e2590f23b5beaa54d – before 0a94f7e017438935c09ef833a1aa908ad98752131499f79995c7ee58e3bfeeff75f6d1b37dcda881 – before 932c0a4f77ac13e526fdd5b42914d29c9821d389505ea2b295929e7be2b4e1bc86ee31cb7862fb01 – before ae76cf6c2c842944c6514c57df54d728f1916553505ea2b295929e7be2b4e1bc86ee31cb7862fb01 – before 9cd536970192b72257afcdfba0bfc09993e6f19c505ea2b295929e7be2b4e1bc86ee31cb7862fb01 – before 09b0cd1297b4dbfe736aeaa0ceeab2265f47f772357603f4d396d85fbf0045512efaf1d7f7394ed76.1.120 – before 6.1.1596.6.51 – before 6.6.117
Linux Linux 6.9

References