CVE-2022-50374 (GCVE-0-2022-50374)

Vulnerability from cvelistv5 – Published: 2025-09-17 14:56 – Updated: 2026-01-14 18:43
VLAI?
Title
Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure
Summary
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().
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-908 - Use of Uninitialized Resource
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 , < d7cc0d51ffcbfd1caaa809fcf9cff05c46d0fb4d (git)
Affected: 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 , < b8917dce2134739b39bc0a5648b18427f2cad569 (git)
Affected: 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 , < 75b2c71ea581c7bb1303860d89366a42ad0506d2 (git)
Affected: 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 , < 98ce10f3f345e61fc6c83bff9cd11cda252b05ac (git)
Affected: 67d2f8781b9f00d1089aafcfa3dc09fcd0f343e2 , < 3124d320c22f3f4388d9ac5c8f37eaad0cefd6b1 (git)
Affected: f6ec33f6bd3723a8146768106434ef6ab3d9d990 (git)
Affected: 4a53c4e84ace1bc75157a7281af3fe8f5b19d08c (git)
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    Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 5.10.150 , ≤ 5.10.* (semver)
Unaffected: 5.15.75 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.