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OpenAdvisories
Unscored CVE-2024-41063 EUVD-2024-38861GHSA-2ff5-8rvr-hgx3

Bluetooth: hci_core: cancel all works upon hci_unregister_dev()

Published Jul 29, 2024 · Updated May 23, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_core: cancel all works upon hci_unregister_dev()

syzbot is reporting that calling hci_release_dev() from hci_error_reset()
due to hci_dev_put() from hci_error_reset() can cause deadlock at
destroy_workqueue(), for hci_error_reset() is called from
hdev->req_workqueue which destroy_workqueue() needs to flush.

We need to make sure that hdev->{rx_work,cmd_work,tx_work} which are
queued into hdev->workqueue and hdev->{power_on,error_reset} which are
queued into hdev->req_workqueue are no longer running by the moment

destroy_workqueue(hdev->workqueue);
destroy_workqueue(hdev->req_workqueue);

are called from hci_release_dev().

Call cancel_work_sync() on these work items from hci_unregister_dev()
as soon as hdev->list is removed from hci_dev_list.

Affected products

VendorProductAffectedFixed
Linux Linux 4.19.309 – < 4.19.319, 5.4.271 – < 5.4.281, 5.10.212 – < 5.10.223, 5.15.151 – < 5.15.164, 6.1.81 – < 6.1.101, 6.6.21 – < 6.6.42, 6.7.9 – < 6.8, 6.8 4.19.319

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.9.11-1 —
Debian 13 linux 6.9.11-1 —
Debian 12 linux 6.1.106-1 —
Debian 11 linux 5.10.223-1 DSA-5747-1
Debian 11 linux-6.1 6.1.119-1~deb11u1 DLA-4008-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1056.58 —
Ubuntu 24.04 LTS linux 6.8.0-48.48 USN-7089-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1018.20 USN-7089-3
Ubuntu 24.04 LTS linux-azure 6.8.0-1017.20 USN-7089-2
Ubuntu 24.04 LTS linux-gcp +1 6.8.0-1017.19 USN-7095-1, USN-7089-2
Ubuntu 24.04 LTS linux-gke 6.8.0-1013.17 USN-7089-6
Ubuntu 24.04 LTS linux-gkeop 6.8.0-1002.4 USN-7156-1
Ubuntu 24.04 LTS linux-ibm 6.8.0-1015.15 USN-7089-2
Ubuntu 24.04 LTS linux-lowlatency 6.8.0-48.48.3 USN-7089-7
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1017.19.1 USN-7095-1
Ubuntu 24.04 LTS linux-oem-6.8 6.8.0-1016.16 USN-7089-4
Ubuntu 24.04 LTS linux-oracle 6.8.0-1015.16 USN-7089-3
Ubuntu 24.04 LTS linux-raspi 6.8.0-1014.16 USN-7089-5
Ubuntu 24.04 LTS linux-riscv 6.8.0-48.48.1 —
Ubuntu 24.04 LTS linux-xilinx 6.8.0-1009.10 —
Ubuntu 22.04 LTS linux +1 5.15.0-125.135 USN-7100-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1072.78 USN-7100-2
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1018.19~22.04.1 USN-7089-3
Ubuntu 22.04 LTS linux-azure 5.15.0-1075.84 USN-7123-1
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1017.20~22.04.1 USN-7090-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1076.85.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1071.79 USN-7100-1
Ubuntu 22.04 LTS linux-gcp-6.8 +1 6.8.0-1017.19~22.04.1 USN-7095-1, USN-7089-1
Ubuntu 22.04 LTS linux-gke 5.15.0-1069.75 USN-7100-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1055.62 USN-7100-1
Ubuntu 22.04 LTS linux-hwe-6.8 6.8.0-48.48~22.04.1 USN-7089-1
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1065.68 USN-7100-1
Ubuntu 22.04 LTS linux-ibm-6.8 +1 6.8.0-1015.15~22.04.1 USN-7089-3
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1067.73 USN-7144-1
Ubuntu 22.04 LTS linux-kvm 5.15.0-1069.74 USN-7100-1
Ubuntu 22.04 LTS linux-lowlatency-hwe-6.8 6.8.0-48.48.3~22.04.1 USN-7089-7
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1067.68 USN-7100-1
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1032.32 —
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1020.20 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1070.76 USN-7100-1
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 22.04 LTS linux-riscv-6.8 6.8.0-48.48.1~22.04.2 —
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1038.42 USN-7100-1
Ubuntu 20.04 LTS linux 5.4.0-200.220 USN-7088-1
Ubuntu 20.04 LTS linux-aws 5.4.0-1135.145 USN-7088-4
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1072.78~20.04.1 USN-7100-1
Ubuntu 20.04 LTS linux-azure 5.4.0-1140.147 USN-7088-2
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1078.87~20.04.1 USN-7194-1
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1095.102 USN-7088-2
Ubuntu 20.04 LTS linux-gcp 5.4.0-1139.148 USN-7088-1
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1071.79~20.04.1 USN-7100-1
Ubuntu 20.04 LTS linux-gke +26 No fix yet —
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1102.106 USN-7088-1
Ubuntu 20.04 LTS linux-gkeop-5.15 5.15.0-1055.62~20.04.1 USN-7100-1
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-125.135~20.04.1 USN-7100-1
Ubuntu 20.04 LTS linux-ibm 5.4.0-1082.87 USN-7088-1
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1065.68~20.04.1 USN-7100-1
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1067.73~20.04.1 USN-7144-1
Ubuntu 20.04 LTS linux-iot 5.4.0-1044.45 USN-7119-1
Ubuntu 20.04 LTS linux-kvm 5.4.0-1123.131 USN-7088-4
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1032.32~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1134.143 USN-7088-4
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1070.76~20.04.1 USN-7100-1
Ubuntu 20.04 LTS linux-raspi 5.4.0-1119.131 USN-7088-5
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1068.72~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1054.58 USN-7088-4
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Show 11 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2013.14 —
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1011.11 —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1066.68 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1073.81 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1011.11~22.04.1 —
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-78.78+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1072.78+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1075.84+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-125.135+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1071.79+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1135.145+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1140.147+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1109.119 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1139.148+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2116.122 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2095.101 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1133.144 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2079.85 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1111.118 —
Ubuntu Pro 18.04 LTS linux 4.15.0-235.247 USN-7342-1
Ubuntu Pro 18.04 LTS linux-aws 4.15.0-1178.191 USN-7344-1
Ubuntu Pro 18.04 LTS linux-aws-5.4 5.4.0-1135.145~18.04.1 USN-7088-3
Ubuntu Pro 18.04 LTS linux-azure-4.15 4.15.0-1186.201 USN-7344-2
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1140.147~18.04.1 USN-7088-4
Ubuntu Pro 18.04 LTS linux-gcp-4.15 4.15.0-1171.188 USN-7344-1
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1139.148~18.04.1 USN-7088-1
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-200.220~18.04.1 USN-7088-1
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1082.87~18.04.1 USN-7088-1
Ubuntu Pro 18.04 LTS linux-kvm 4.15.0-1161.166 USN-7344-1
Ubuntu Pro 18.04 LTS linux-oracle 4.15.0-1140.151 USN-7344-1
Ubuntu Pro 18.04 LTS linux-oracle-5.4 5.4.0-1134.143~18.04.1 USN-7088-3
Ubuntu Pro 18.04 LTS linux-raspi-5.4 5.4.0-1119.131~18.04.1 USN-7088-5
Ubuntu Pro 16.04 LTS linux 4.4.0-266.300 USN-7332-1
Ubuntu Pro 16.04 LTS linux-aws 4.4.0-1179.194 USN-7332-1
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1178.191~16.04.1 USN-7344-1
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1186.201~16.04.1 USN-7344-2
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1171.188~16.04.1 USN-7344-1
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-235.247~16.04.1 USN-7342-1
Ubuntu Pro 16.04 LTS linux-kvm 4.4.0-1142.153 USN-7332-2
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1140.151~16.04.1 USN-7344-1
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1141.147 USN-7332-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1186.201~14.04.1 USN-7344-2
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-266.300~14.04.1 USN-7332-3
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.4.0-503.11.1.el9_5 RHSA-2024:9315
RHEL 9 rv +67 5.14.0-503.11.1.el9_5 RHSA-2024:9315
ReleasePackageFixed inAdvisory
SLES 15 SP6 kernel-64kb +6 6.4.0-150600.23.22.1 SUSE-SU-2024:3383-1
SLES 15 SP6 kernel-azure +2 6.4.0-150600.8.11.1 SUSE-SU-2024:3194-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.22.1.150600.12.8.3 SUSE-SU-2024:3383-1
SLES 15 SP5 kernel-64kb +5 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.63.1 SUSE-SU-2024:2947-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
SLES 15 SP5 kernel-docs 5.14.21-150500.55.73.2 SUSE-SU-2024:2939-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.194.1 SUSE-SU-2024:2901-1
SLES 12 SP5 kernel-docs 4.12.14-122.225.2 SUSE-SU-2024:2940-1
SLES 12 SP5 kernel-syms +3 4.12.14-122.225.1 SUSE-SU-2024:2940-1
Show 9 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.194.1 SUSE-SU-2024:2901-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.225.1 SUSE-SU-2024:2940-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.197.1 SUSE-SU-2024:2892-1
SLE Micro 6.0 kernel-default-base 6.4.0-17.1.1.51 SUSE-SU-2025:20044-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_2 +1 1-1.1 SUSE-SU-2025:20047-1, SUSE-SU-2025:20044-1
SLE Micro 6.0 kernel-rt +1 6.4.0-10.1 SUSE-SU-2025:20047-1
SLE Micro 6.0 kernel-source +2 6.4.0-19.1 SUSE-SU-2025:20044-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.64.1 SUSE-SU-2024:2894-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.22.1 SUSE-SU-2024:3383-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_2 1-150600.1.3.2 SUSE-SU-2024:3195-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_4 1-150600.13.3.3 SUSE-SU-2024:3383-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_17 +1 1-150500.11.3.1 SUSE-SU-2024:2939-1, SUSE-SU-2024:2894-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.225.1 SUSE-SU-2024:2940-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_59 1-8.3.1 SUSE-SU-2024:2940-1
SUSE Real Time Module 15 SP6 kernel-rt +2 6.4.0-150600.10.8.3 SUSE-SU-2024:3195-1
SUSE Real Time Module 15 SP6 kernel-syms-rt 6.4.0-150600.10.8.1 SUSE-SU-2024:3195-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.64.1 SUSE-SU-2024:2894-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.6 dtb-aarch64 +10 6.4.0-150600.23.22.1 SUSE-SU-2024:3383-1
openSUSE Leap 15.6 kernel-azure +2 6.4.0-150600.8.11.1 SUSE-SU-2024:3194-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.22.1.150600.12.8.3 SUSE-SU-2024:3383-1
openSUSE Leap 15.6 kernel-rt +2 6.4.0-150600.10.8.3 SUSE-SU-2024:3195-1
openSUSE Leap 15.6 kernel-syms-rt 6.4.0-150600.10.8.1 SUSE-SU-2024:3195-1
openSUSE Leap 15.5 dtb-aarch64 +9 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.63.1 SUSE-SU-2024:2947-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-docs 5.14.21-150500.55.73.2 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.64.1 SUSE-SU-2024:2894-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
openSUSE Leap Micro 5.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
openSUSE Leap Micro 5.5 kernel-rt 5.14.21-150500.13.64.1 SUSE-SU-2024:2894-1

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 bpftool 7.4.0-503.11.1.el9_5 ELSA-2024-9315
Oracle Linux 9 rv +28 5.14.0-503.11.1.el9_5 ELSA-2024-9315
Oracle Linux 8 bpftool +13 5.15.0-302.167.6.el9uek ELSA-2024-12815
Oracle Linux 7 kernel-uek-container +1 5.4.17-2136.336.5.1.el8uek ELSA-2024-12782
Oracle Linux 7 perf +10 4.14.35-2047.542.2.el7uek ELSA-2024-12814, ELSA-2024-12780

Advisories 49

References