Service interruption via leaked device-tree node references
Published Feb 26, 2025 · Updated May 11, 2026
Resource leakage in Linux 5.18 through 5.18.5 allows local users to interrupt service through Apple AIC FIQ initialization. In build_fiq_affinity, each of_find_node_by_phandle() call increments a device-tree node reference, but the loop omits of_node_put() after using that node. The affected path parses Apple AIC device-tree FIQ affinities, and public records identify no repeatable user-controlled trigger.
Summary
What happened
Resource leakage in Linux 5.18 through 5.18.5 allows local users to interrupt service through Apple AIC FIQ initialization. In build_fiq_affinity, each of_find_node_by_phandle() call increments a device-tree node reference, but the loop omits of_node_put() after using that node. The affected path parses Apple AIC device-tree FIQ affinities, and public records identify no repeatable user-controlled trigger.
The record
- CVE
- CVE-2022-49717
- Published
- Feb 26, 2025
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 26, 2025CVE publishedPublication date reported by the CVE source.
- May 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.18
- Affected versionversion=a5e8801202b318622ea526aa5625e5f7eceb4d26 <2dc14cebe5dc053434b507bb24e6821cb795050f
- Affected versionversion=a5e8801202b318622ea526aa5625e5f7eceb4d26 <b1ac803f47cb1615468f35cf1ccb553c52087301
What conditions does exploitation require?
What is affected?
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
No sourced classifications are available.
Public exploit references
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Technologies
Your stack
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Your stack
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