CVE-2022-50419
Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times
- Published
- Updated
- Reserved
- Assigned by
- Linux
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>
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 11 months later
· 11 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Weakness
Affected products
- affected b219e3ac66183fc9771b94af931fb5fd41d586ec – < 4bcefec3636208b4c97536b26014d5935d5c10a0
- affected b219e3ac66183fc9771b94af931fb5fd41d586ec – < 6144423712d570247b8ca26e50a277c30dd13702
- affected b219e3ac66183fc9771b94af931fb5fd41d586ec – < 671fee73e08ff415d36a7c16bdf238927df83884
- affected b219e3ac66183fc9771b94af931fb5fd41d586ec – < 6e85d2ad958c6f034b1b158d904019869dbb3c81
- affected b219e3ac66183fc9771b94af931fb5fd41d586ec – < 7b674dce4162bb46d396586e30e4653427023875
- affected b219e3ac66183fc9771b94af931fb5fd41d586ec – < 3423a50fa018e88aed4c900d59c3c8334d8ad583
- affected b219e3ac66183fc9771b94af931fb5fd41d586ec – < ef055094df4c10b73cfe67c8d43f9de1fb608a8b
- affected b219e3ac66183fc9771b94af931fb5fd41d586ec – < 1b6c89571f453101251201f0fad1c26f7256e937
- affected b219e3ac66183fc9771b94af931fb5fd41d586ec – < 448a496f760664d3e2e79466aa1787e6abc922b5
- affected 2.6.19
- unaffected < 2.6.19
- unaffected 4.9.331 – ≤ 4.9.*
- unaffected 4.14.296 – ≤ 4.14.*
- unaffected 4.19.262 – ≤ 4.19.*
- unaffected 5.4.220 – ≤ 5.4.*
- unaffected 5.10.150 – ≤ 5.10.*
- unaffected 5.15.75 – ≤ 5.15.*
- unaffected 5.19.17 – ≤ 5.19.*
- unaffected 6.0.3 – ≤ 6.0.*
- unaffected 6.1 – ≤ *
References (9)
- https://git.kernel.org/stable/c/4bcefec3636208b4c97536b26014d5935d5c10a0 (opens in a new tab)
- https://git.kernel.org/stable/c/6144423712d570247b8ca26e50a277c30dd13702 (opens in a new tab)
- https://git.kernel.org/stable/c/671fee73e08ff415d36a7c16bdf238927df83884 (opens in a new tab)
- https://git.kernel.org/stable/c/6e85d2ad958c6f034b1b158d904019869dbb3c81 (opens in a new tab)
- https://git.kernel.org/stable/c/7b674dce4162bb46d396586e30e4653427023875 (opens in a new tab)
- https://git.kernel.org/stable/c/3423a50fa018e88aed4c900d59c3c8334d8ad583 (opens in a new tab)
- https://git.kernel.org/stable/c/ef055094df4c10b73cfe67c8d43f9de1fb608a8b (opens in a new tab)
- https://git.kernel.org/stable/c/1b6c89571f453101251201f0fad1c26f7256e937 (opens in a new tab)
- https://git.kernel.org/stable/c/448a496f760664d3e2e79466aa1787e6abc922b5 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-50419)Record last updated .