CVE-2022-50374
Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure syzbot is reporting NULL pointer dereference at hci_uart_tty_close() [1], for rcu_sync_enter() is called without rcu_sync_init() due to hci_uart_tty_open() ignoring percpu_init_rwsem() failure. While we are at it, fix that hci_uart_register_device() ignores percpu_init_rwsem() failure and hci_uart_unregister_device() does not call percpu_free_rwsem().
Timeline
ID reserved
By Linux
Published
- 8 months later
· 8 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 |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 – < d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d
- affected 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 – < b8917dce2134739b39bc0a5648b18427f2cad569
- affected 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 – < 75b2c71ea581c7bb1303860d89366a42ad0506d2
- affected 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 – < 98ce10f3f345e61fc6c83bff9cd11cda252b05ac
- affected 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 – < 3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1
- affected f6ec33f6bd3723a8146768106434ef6ab3d9d990
- affected 4a53c4e84ace1bc75157a7281af3fe8f5b19d08c
- affected 4.14.63 – < 4.15
- affected 4.15
- unaffected < 4.15
- 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 (5)
- https://git.kernel.org/stable/c/d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d (opens in a new tab)
- https://git.kernel.org/stable/c/b8917dce2134739b39bc0a5648b18427f2cad569 (opens in a new tab)
- https://git.kernel.org/stable/c/75b2c71ea581c7bb1303860d89366a42ad0506d2 (opens in a new tab)
- https://git.kernel.org/stable/c/98ce10f3f345e61fc6c83bff9cd11cda252b05ac (opens in a new tab)
- https://git.kernel.org/stable/c/3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1 (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-2022-50374)Record last updated .