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High · 7.8 CVE-2025-40284 EUVD-2025-201571GHSA-5w6m-vxmj-7w4c

Bluetooth: MGMT: cancel mesh send timer when hdev removed

Published Dec 6, 2025 · Updated Oct 15, 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-5.19 Package: linux-aws-5.3 Package: linux-aws-5.8 Package: linux-aws-6.14 Package: linux-aws-6.17 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.14 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-6.14 Package: linux-azure-fde-6.2 Package: linux-azure-fde-6.8 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-azure-nvidia-6.14 Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.14 Package: linux-gcp-6.17 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-5.19 Package: linux-hwe-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.14 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-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-lowlatency Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.11 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.17 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-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-6.11 Package: linux-oem-6.14 Package: linux-oem-6.17 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-5.3 Package: linux-oracle-5.8 Package: linux-oracle-6.14 Package: linux-oracle-6.17 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.14 Package: linux-realtime-6.17 Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.14 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 Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

Bluetooth: MGMT: cancel mesh send timer when hdev removed

mesh_send_done timer is not canceled when hdev is removed, which causes
crash if the timer triggers after hdev is gone.

Cancel the timer when MGMT removes the hdev, like other MGMT timers.

Should fix the BUG: sporadically seen by BlueZ test bot
(in "Mesh - Send cancel - 1" test).

Log:
------
BUG: KASAN: slab-use-after-free in run_timer_softirq+0x76b/0x7d0
...
Freed by task 36:
kasan_save_stack+0x24/0x50
kasan_save_track+0x14/0x30
__kasan_save_free_info+0x3a/0x60
__kasan_slab_free+0x43/0x70
kfree+0x103/0x500
device_release+0x9a/0x210
kobject_put+0x100/0x1e0
vhci_release+0x18b/0x240
------

Affected products

VendorProductAffectedFixed
Linux Linux 6.1 6.1.159

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.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 linux 6.17.9-1 —
Debian 13 linux 6.12.63-1 —
Debian 12 linux 6.1.159-1 —
Debian 11 linux-6.1 6.1.159-1~deb11u1 DLA-4436-1

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 24.04 LTS linux-bluefield 6.8.0-1017.21 —
Ubuntu 25.10 linux 6.17.0-14.14 USN-8029-1
Ubuntu 25.10 linux-aws +2 6.17.0-1007.7 USN-8030-1, USN-8029-2
Ubuntu 25.10 linux-azure +1 6.17.0-1008.8 USN-8029-3, USN-8029-1
Ubuntu 25.10 linux-azure-fde No fix yet —
Ubuntu 25.10 linux-realtime 6.17.0-1006.7 USN-8029-1
Ubuntu 25.10 linux-riscv 6.17.0-14.14.1 —
Ubuntu 24.04 LTS linux 6.8.0-106.106 USN-8095-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1050.53 USN-8095-1
Ubuntu 24.04 LTS linux-aws-6.17 +1 6.17.0-1007.7~24.04.1 —
Ubuntu 24.04 LTS linux-azure 6.8.0-1051.57 USN-8125-1
Ubuntu 24.04 LTS linux-azure-fde 6.8.0-1058.65 —
Ubuntu 24.04 LTS linux-azure-nvidia 6.8.0-1039.42 —
Ubuntu 24.04 LTS linux-gcp 6.8.0-1052.55 USN-8095-1
Ubuntu 24.04 LTS linux-gcp-6.17 6.17.0-1008.8~24.04.1 —
Ubuntu 24.04 LTS linux-gke 6.8.0-1048.53 USN-8095-1
Ubuntu 24.04 LTS linux-gkeop 6.8.0-1035.38 USN-8095-1
Ubuntu 24.04 LTS linux-ibm 6.8.0-1049.49 USN-8095-1
Ubuntu 24.04 LTS linux-lowlatency 6.8.0-106.106.1 USN-8095-1
Ubuntu 24.04 LTS linux-nvidia 6.8.0-1049.52 USN-8100-1
Ubuntu 24.04 LTS linux-nvidia-6.17 6.17.0-1008.8 —
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1049.52.1 USN-8100-1
Ubuntu 24.04 LTS linux-nvidia-tegra 6.8.0-1020.20 —
Ubuntu 24.04 LTS linux-oem-6.17 6.17.0-1011.11 USN-8048-1
Ubuntu 24.04 LTS linux-oracle 6.8.0-1047.48 USN-8095-1
Ubuntu 24.04 LTS linux-raspi 6.8.0-1050.54 USN-8095-5
Ubuntu 24.04 LTS linux-riscv +18 No fix yet —
Ubuntu 24.04 LTS linux-xilinx 6.8.0-1028.29 USN-8261-1
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1050.53~22.04.1 USN-8095-4
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1051.57~22.04.1 USN-8126-1
Ubuntu 22.04 LTS linux-azure-fde-6.8 6.8.0-1058.65~22.04.1 —
Ubuntu 22.04 LTS linux-gcp-6.8 6.8.0-1052.55~22.04.1 USN-8095-1
Ubuntu 22.04 LTS linux-hwe-6.8 +1 6.8.0-106.106~22.04.1 USN-8095-1
Ubuntu 22.04 LTS linux-ibm-6.8 6.8.0-1049.49~22.04.1 USN-8095-1
Ubuntu 22.04 LTS linux-lowlatency-hwe-6.8 6.8.0-106.106.1~22.04.1 USN-8095-1
Ubuntu 22.04 LTS linux-nvidia-6.8 6.8.0-1049.52~22.04.1 USN-8100-1
Ubuntu 22.04 LTS linux-oracle-6.8 6.8.0-1047.48~22.04.1 USN-8095-1
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2040.41 USN-8095-5
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1045.46 USN-8095-3
Ubuntu Pro Realtime 24.04 LTS linux-realtime-6.14 No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-realtime-6.17 6.17.0-1006.7~24.04.1 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1045.46~22.04.1 USN-8095-3
Ubuntu Pro FIPS-updates 24.04 LTS linux-aws-fips 6.8.0-1050.53+fips1 USN-8095-2
Ubuntu Pro FIPS-updates 24.04 LTS linux-azure-fips 6.8.0-1052.58+fips1 USN-8165-1
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-106.106+fips1 USN-8095-2
Ubuntu Pro FIPS-updates 24.04 LTS linux-gcp-fips 6.8.0-1052.55+fips1 USN-8095-2

SUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
SLES 15 SP7 kernel-64kb +6 6.4.0-150700.53.28.1 SUSE-SU-2026:0315-1
SLES 15 SP7 kernel-azure +2 6.4.0-150700.20.24.1 SUSE-SU-2026:0281-1
SLES 15 SP7 kernel-default-base 6.4.0-150700.53.28.1.150700.17.19.1 SUSE-SU-2026:0315-1
SLES 15 SP6 kernel-64kb +6 6.4.0-150600.23.84.1 SUSE-SU-2026:0293-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.84.1.150600.12.38.1 SUSE-SU-2026:0293-1
Show 9 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 16.0 kernel-64kb +8 6.12.0-160000.9.1 SUSE-SU-2026:20220-1
SLES for SAP 16.0 kernel-default-base 6.12.0-160000.9.1.160000.2.6 SUSE-SU-2026:20220-1
SLES for SAP 16.0 kernel-livepatch-SLE16_Update_0 8-160000.4.3 SUSE-SU-2026:20946-1
SLES for SAP 16.0 kernel-livepatch-SLE16_Update_1 6-160000.1.1 SUSE-SU-2026:20945-1
SLES for SAP 16.0 kernel-livepatch-SLE16_Update_2 4-160000.1.1 SUSE-SU-2026:20947-1
SLES for SAP 15 SP6 kernel-default-base 6.4.0-150600.23.84.1.150600.12.38.1 SUSE-SU-2026:0293-1
SLES for SAP 15 SP6 kernel-docs +4 6.4.0-150600.23.84.1 SUSE-SU-2026:0293-1
SLES 16.0 kernel-64kb +8 6.12.0-160000.9.1 SUSE-SU-2026:20228-1, SUSE-SU-2026:20220-1
SLES 16.0 kernel-default-base 6.12.0-160000.9.1.160000.2.6 SUSE-SU-2026:20220-1
SLES 16.0 kernel-livepatch-SLE16_Update_0 8-160000.4.3 SUSE-SU-2026:20946-1
SLES 16.0 kernel-livepatch-SLE16_Update_1 6-160000.1.1 SUSE-SU-2026:20945-1
SLES 16.0 kernel-livepatch-SLE16_Update_2 4-160000.1.1 SUSE-SU-2026:20947-1
SLE Micro 6.2 kernel-default-base 6.12.0-160000.9.1.160000.2.6 SUSE-SU-2026:20207-1
SLE Micro 6.2 kernel-livepatch-SLE16-RT_Update_0 6-160000.3.4 SUSE-SU-2026:20831-1
SLE Micro 6.2 kernel-livepatch-SLE16-RT_Update_1 5-160000.1.1 SUSE-SU-2026:20832-1
SLE Micro 6.2 kernel-livepatch-SLE16-RT_Update_2 3-160000.1.1 SUSE-SU-2026:20829-1
SLE Micro 6.2 kernel-livepatch-SLE16_Update_0 8-160000.4.3 SUSE-SU-2026:20841-1
SLE Micro 6.2 kernel-livepatch-SLE16_Update_1 6-160000.1.1 SUSE-SU-2026:20840-1
SLE Micro 6.2 kernel-livepatch-SLE16_Update_2 4-160000.1.1 SUSE-SU-2026:20842-1
SLE Micro 6.2 kernel-rt +5 6.12.0-160000.9.1 SUSE-SU-2026:20564-1, SUSE-SU-2026:20207-1
SLE Micro 6.1 kernel-default-base 6.4.0-39.1.21.16 SUSE-SU-2026:20498-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_10 11-1.1 SUSE-SU-2026:20896-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_13 +1 2-1.1 SUSE-SU-2026:20900-1, SUSE-SU-2026:20899-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_5 16-1.1 SUSE-SU-2026:20891-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_6 14-3.1 SUSE-SU-2026:20892-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_7 14-1.3 SUSE-SU-2026:20893-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_9 11-1.2 SUSE-SU-2026:20895-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_10 +1 7-1.1 SUSE-SU-2026:20897-1, SUSE-SU-2026:20885-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_11 +2 6-1.1 SUSE-SU-2026:20898-1, SUSE-SU-2026:20887-1, SUSE-SU-2026:20886-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_13 4-1.1 SUSE-SU-2026:20888-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_14 2-1.2 SUSE-SU-2026:20889-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_5 17-1.2 SUSE-SU-2026:20880-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_6 15-3.1 SUSE-SU-2026:20881-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_7 14-1.2 SUSE-SU-2026:20882-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_8 +2 13-1.2 SUSE-SU-2026:20894-1, SUSE-SU-2026:20884-1, SUSE-SU-2026:20883-1
SLE Micro 6.1 kernel-rt +1 6.4.0-40.1 SUSE-SU-2026:20876-1
SLE Micro 6.1 kernel-source +2 6.4.0-39.1 SUSE-SU-2026:20498-1
SLE Micro 6.0 kernel-default-base 6.4.0-39.1.21.16 SUSE-SU-2026:20477-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_10 11-1.1 SUSE-SU-2026:20852-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_13 +1 2-1.1 SUSE-SU-2026:20856-1, SUSE-SU-2026:20855-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_5 16-1.1 SUSE-SU-2026:20847-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_6 14-3.1 SUSE-SU-2026:20848-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_7 14-1.3 SUSE-SU-2026:20849-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_9 11-1.2 SUSE-SU-2026:20851-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_10 +1 7-1.1 SUSE-SU-2026:20862-1, SUSE-SU-2026:20853-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_11 +2 6-1.1 SUSE-SU-2026:20864-1, SUSE-SU-2026:20863-1, SUSE-SU-2026:20854-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_13 4-1.1 SUSE-SU-2026:20865-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_14 2-1.2 SUSE-SU-2026:20866-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_5 17-1.2 SUSE-SU-2026:20857-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_6 15-3.1 SUSE-SU-2026:20858-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_7 14-1.2 SUSE-SU-2026:20859-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_8 +2 13-1.2 SUSE-SU-2026:20861-1, SUSE-SU-2026:20860-1, SUSE-SU-2026:20850-1
SLE Micro 6.0 kernel-rt +1 6.4.0-40.1 SUSE-SU-2026:20845-1
SLE Micro 6.0 kernel-source +2 6.4.0-39.1 SUSE-SU-2026:20477-1
SLE Live Patching 15 SP7 kernel-default 6.4.0-150700.53.28.1 SUSE-SU-2026:0315-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_0 12-150700.3.1 SUSE-SU-2026:0939-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_6 3-150700.2.1 SUSE-SU-2026:0946-1, SUSE-SU-2026:0943-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_8 1-150700.1.3.1 SUSE-SU-2026:0278-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_0 12-150700.3.33.1 SUSE-SU-2026:1125-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_1 +1 12-150700.2.1 SUSE-SU-2026:1101-1, SUSE-SU-2026:0940-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_2 +1 11-150700.2.1 SUSE-SU-2026:1132-1, SUSE-SU-2026:0951-1, SUSE-SU-2026:0941-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_4 7-150700.2.1 SUSE-SU-2026:1096-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_5 4-150700.2.1 SUSE-SU-2026:1099-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_8 1-150700.15.3.1 SUSE-SU-2026:0315-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.84.1 SUSE-SU-2026:0293-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_10 14-150600.2.2 SUSE-SU-2026:1073-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_12 13-150600.2.1 SUSE-SU-2026:1125-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_13 11-150600.2.1 SUSE-SU-2026:1083-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_14 +1 7-150600.2.1 SUSE-SU-2026:1096-1, SUSE-SU-2026:1089-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_17 2-150600.2.1 SUSE-SU-2026:1099-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_19 1-150600.13.3.1 SUSE-SU-2026:0293-1
SUSE Real Time Module 15 SP7 kernel-rt +2 6.4.0-150700.7.28.1 SUSE-SU-2026:0278-1

openSUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 kernel-default-base 6.12.0-160000.9.1.160000.2.6 openSUSE-SU-2026:20145-1
openSUSE Leap 16.0 kernel-rt +11 6.12.0-160000.9.1 openSUSE-SU-2026:20145-1
openSUSE Leap 15.6 dtb-aarch64 +10 6.4.0-150600.23.84.1 SUSE-SU-2026:0293-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.84.1.150600.12.38.1 SUSE-SU-2026:0293-1

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 kernel-uek +34 6.12.0-107.59.3.2.el10uek ELSA-2026-50006

Advisories 50

References