CVE-2022-50447
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-10-01
Last updated on: 2025-10-02
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_conn: Fix crash on hci_create_cis_sync
When attempting to connect multiple ISO sockets without using
DEFER_SETUP may result in the following crash:
BUG: KASAN: null-ptr-deref in hci_create_cis_sync+0x18b/0x2b0
Read of size 2 at addr 0000000000000036 by task kworker/u3:1/50
CPU: 0 PID: 50 Comm: kworker/u3:1 Not tainted
6.0.0-rc7-02243-gb84a13ff4eda #4373
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
BIOS 1.16.0-1.fc36 04/01/2014
Workqueue: hci0 hci_cmd_sync_work
Call Trace:
<TASK>
dump_stack_lvl+0x19/0x27
kasan_report+0xbc/0xf0
? hci_create_cis_sync+0x18b/0x2b0
hci_create_cis_sync+0x18b/0x2b0
? get_link_mode+0xd0/0xd0
? __ww_mutex_lock_slowpath+0x10/0x10
? mutex_lock+0xe0/0xe0
? get_link_mode+0xd0/0xd0
hci_cmd_sync_work+0x111/0x190
process_one_work+0x427/0x650
worker_thread+0x87/0x750
? process_one_work+0x650/0x650
kthread+0x14e/0x180
? kthread_exit+0x50/0x50
ret_from_fork+0x22/0x30
</TASK>
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 6.0.0-rc7 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a crash issue in the Linux kernel's Bluetooth subsystem. Specifically, when attempting to connect multiple ISO sockets without using DEFER_SETUP, it can cause a null pointer dereference in the function hci_create_cis_sync, leading to a kernel crash.
How can this vulnerability impact me? :
The vulnerability can cause the Linux kernel to crash when certain Bluetooth operations are performed, potentially leading to system instability or denial of service.
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