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CVE-2022-50339— Bluetooth: avoid hci_dev_test_and_set_flag() in mgmt_init_hdev()

EPSS 0.01% · P2
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I. Basic Information for CVE-2022-50339

Vulnerability Information
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Vulnerability Title
Bluetooth: avoid hci_dev_test_and_set_flag() in mgmt_init_hdev()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: avoid hci_dev_test_and_set_flag() in mgmt_init_hdev() syzbot is again reporting attempt to cancel uninitialized work at mgmt_index_removed() [1], for setting of HCI_MGMT flag from mgmt_init_hdev() from hci_mgmt_cmd() from hci_sock_sendmsg() can race with testing of HCI_MGMT flag from mgmt_index_removed() from hci_sock_bind() due to lack of serialization via hci_dev_lock(). Since mgmt_init_hdev() is called with mgmt_chan_list_lock held, we can safely split hci_dev_test_and_set_flag() into hci_dev_test_flag() and hci_dev_set_flag(). Thus, in order to close this race, set HCI_MGMT flag after INIT_DELAYED_WORK() completed. This is a local fix based on mgmt_chan_list_lock. Lack of serialization via hci_dev_lock() might be causing different race conditions somewhere else. But a global fix based on hci_dev_lock() should deserve a future patch.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于HCI_MGMT标志设置与工作队列初始化之间存在竞争条件，可能导致未初始化工作队列被取消。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 3f2893d3c142986aa935821460cb3adb77044722 ~ e53c6180db8dd09de94e0a3bdf4fef6f5f9dd6e6 -
LinuxLinux 6.0 -

II. Public POCs for CVE-2022-50339

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III. Intelligence Information for CVE-2022-50339

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Same Patch Batch · Linux · 2025-09-16 · 115 CVEs total

CVE-2022-50340media: vimc: Fix wrong function called when vimc_init() fails
CVE-2023-53307rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails
CVE-2023-53305Bluetooth: L2CAP: Fix use-after-free
CVE-2023-53304netfilter: nft_set_rbtree: fix overlap expiration walk
CVE-2022-50351cifs: Fix xid leak in cifs_create()
CVE-2022-50352net: hns: fix possible memory leak in hnae_ae_register()
CVE-2022-50350scsi: target: iscsi: Fix a race condition between login_work and the login thread
CVE-2022-50348nfsd: Fix a memory leak in an error handling path
CVE-2022-50349misc: tifm: fix possible memory leak in tifm_7xx1_switch_media()
CVE-2022-50347mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host()
CVE-2022-50346ext4: init quota for 'old.inode' in 'ext4_rename'
CVE-2022-50343rapidio: fix possible name leaks when rio_add_device() fails
CVE-2022-50344ext4: fix null-ptr-deref in ext4_write_info
CVE-2022-50342floppy: Fix memory leak in do_floppy_init()
CVE-2022-50341cifs: fix oops during encryption
CVE-2025-39826net: rose: convert 'use' field to refcount_t
CVE-2025-39829trace/fgraph: Fix the warning caused by missing unregister notifier
CVE-2025-39828atm: atmtcp: Prevent arbitrary write in atmtcp_recv_control().
CVE-2025-39827net: rose: include node references in rose_neigh refcount
CVE-2025-39830net/mlx5: HWS, Fix memory leak in hws_pool_buddy_init error path

Showing top 20 of 115 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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