Unspecified impact via Bluetooth workqueue teardown race
Published Dec 30, 2025 · Updated Dec 30, 2025
Race condition in Linux kernel 5.18.18, 5.19.2 through 5.19.14, and 6.0 allows attackers to cause unspecified impact via Bluetooth. The HCI command timers are queued on system_wq while their callbacks enqueue cmd_work on hdev->workqueue as that device queue is draining; missing RCU protection also permits delayed work to be queued after cancellation completes. Public records identify no privilege level, reachable attacker input, or concrete consequence beyond the invalid workqueue scheduling condition.
Summary
What happened
Race condition in Linux kernel 5.18.18, 5.19.2 through 5.19.14, and 6.0 allows attackers to cause unspecified impact via Bluetooth. The HCI command timers are queued on system_wq while their callbacks enqueue cmd_work on hdev->workqueue as that device queue is draining; missing RCU protection also permits delayed work to be queued after cancellation completes. Public records identify no privilege level, reachable attacker input, or concrete consequence beyond the invalid workqueue scheduling condition.
The record
- CVE
- CVE-2022-50833
- Published
- Dec 30, 2025
- Updated
- Dec 30, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Dec 30, 2025CVE publishedPublication date reported by the CVE source.
- Dec 30, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=3b382555706558f5c0587862b6dc03e96a252bba <c4635cf3d845a7324c25c52d549b70c8bd7ad4c7
- Affected versionversion=4bf367fa1fefabdf14938d0ac9ed60020389112e
- Affected versionversion=6.0
- Affected versionversion=877afadad2dce8aae1f2aad8ce47e072d4f6165e <3c6b036fe5c8ed8b6c4cbdc03605929882907ef0
- Affected versionversion=877afadad2dce8aae1f2aad8ce47e072d4f6165e <deee93d13d385103205879a8a0915036ecd83261
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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