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Vulnerability · Published Sep 18, 2025 · Assigned by Linux

CVE-2022-50419Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times

High 8.8

In plain English

A high-severity double free 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 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.2%top 84.7% 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_sysfs: Fix attempting to call device_add multiple times device_add shall not be called multiple times as stated in its documentation: 'Do not call this routine or device_register() more than once for any device structure' Syzkaller reports a bug as follows [1]: ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:33! invalid opcode: 0000 [#1] PREEMPT SMP KASAN [...] Call Trace: <TASK> __list_add include/linux/list.h:69 [inline] list_add_tail include/linux/list.h:102 [inline] kobj_kset_join lib/kobject.c:164 [inline] kobject_add_internal+0x18f/0x8f0 lib/kobject.c:214 kobject_add_varg lib/kobject.c:358 [inline] kobject_add+0x150/0x1c0 lib/kobject.c:410 device_add+0x368/0x1e90 drivers/base/core.c:3452 hci_conn_add_sysfs+0x9b/0x1b0 net/bluetooth/hci_sysfs.c:53 hci_le_cis_estabilished_evt+0x57c/0xae0 net/bluetooth/hci_event.c:6799 hci_le_meta_evt+0x2b8/0x510 net/bluetooth/hci_event.c:7110 hci_event_func net/bluetooth/hci_event.c:7440 [inline] hci_event_packet+0x63d/0xfd0 net/bluetooth/hci_event.c:7495 hci_rx_work+0xae7/0x1230 net/bluetooth/hci_core.c:4007 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK>

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.0.3-1DEBIAN-CVE-2022-50419
Debian:13linux6.0.3-1DEBIAN-CVE-2022-50419
Debian:14linux6.0.3-1DEBIAN-CVE-2022-50419
Ubuntu:22.04:LTSlinux5.15.0-60.66UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-aws5.15.0-1030.34UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-azure5.15.0-1033.40UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-50419
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1033.40.1UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-gcp5.15.0-1029.36UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-50419
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-gke5.15.0-1027.32UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1015.19UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-50419
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-ibm5.15.0-1025.28UBUNTU-CVE-2022-50419
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1025.30UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-kvm5.15.0-1028.33UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-60.66UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-50419
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1017.17UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-50419
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-50419
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-oracle5.15.0-1029.35UBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-raspi5.15.0-1024.26UBUNTU-CVE-2022-50419
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50419
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50419
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-50419
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-50419

Affected products (as reported)

VendorProductVersions
Linux Linux b219e3ac66183fc9771b94af931fb5fd41d586ec – before 4bcefec3636208b4c97536b26014d5935d5c10a0b219e3ac66183fc9771b94af931fb5fd41d586ec – before 6144423712d570247b8ca26e50a277c30dd13702b219e3ac66183fc9771b94af931fb5fd41d586ec – before 671fee73e08ff415d36a7c16bdf238927df83884b219e3ac66183fc9771b94af931fb5fd41d586ec – before 6e85d2ad958c6f034b1b158d904019869dbb3c81b219e3ac66183fc9771b94af931fb5fd41d586ec – before 7b674dce4162bb46d396586e30e4653427023875b219e3ac66183fc9771b94af931fb5fd41d586ec – before 3423a50fa018e88aed4c900d59c3c8334d8ad583b219e3ac66183fc9771b94af931fb5fd41d586ec – before ef055094df4c10b73cfe67c8d43f9de1fb608a8bb219e3ac66183fc9771b94af931fb5fd41d586ec – before 1b6c89571f453101251201f0fad1c26f7256e937
Linux Linux 2.6.19

Weakness: CWE-415 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References