Execution hang via misdirected child-node iteration
Published Sep 11, 2026 · Updated Sep 11, 2026
An infinite loop in Linux kernel device-property child iteration allows attackers to hang kernel work via unspecified vectors. In fwnode_get_next_child_node(), a secondary-node child is passed to the primary parent's iterator, which returns the primary's first child instead of NULL and restarts traversal. The loop requires a firmware node with a secondary node containing more than one child; public material does not establish an attacker-controlled path or a whole-system hang.
Summary
What happened
An infinite loop in Linux kernel device-property child iteration allows attackers to hang kernel work via unspecified vectors. In fwnode_get_next_child_node(), a secondary-node child is passed to the primary parent's iterator, which returns the primary's first child instead of NULL and restarts traversal. The loop requires a firmware node with a secondary node containing more than one child; public material does not establish an attacker-controlled path or a whole-system hang.
The record
- CVE
- CVE-2026-89744
- Published
- Sep 11, 2026
- Updated
- Sep 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 11, 2026CVE publishedPublication date reported by the CVE source.
- Sep 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=2692c614f8f05929d692b3dbfd3faef1f00fbaf0 <1900692555826753adab8799a1a8d50bb1ee200c
- Affected versionversion=2692c614f8f05929d692b3dbfd3faef1f00fbaf0 <9cb6b223ef02cb5c9777a852ae1ecf5796987eb6
- Affected versionversion=272fcf19fda14ec603ce915aafc56cb3ea2fb38d
- Affected versionversion=32752c3e81498b106da64a141379eb94f493fe6f <ba69d892ff4e4a58cc12a2cae106b112db3306cc
- Affected versionversion=3cfdf8d27b668d122a67a14bf2bcde1a7f10bbd6
- Affected versionversion=43a621684ffa47fc008be98b15ff7becaf3a72fa
- Affected versionversion=5.10.253 <5.11
- Affected versionversion=5.15.203 <5.16
- Affected versionversion=5b51b2ba5207e07bcd7be0daab2f8eea405e005e
- Affected versionversion=6.1.167 <6.2
- Affected versionversion=6.12.78 <6.12.109
- Affected versionversion=6.18.19 <6.18.50
- Affected versionversion=6.19.9 <6.20
- Affected versionversion=64dc258f9eec1d7204e9879cb836fe29967f1239 <20ed517e416df89448029293304c9e180c26cd4b
- Affected versionversion=6.6.130 <6.7
- Affected versionversion=7.0
- Affected versionversion=d1370a4f2aa0d811d419f6a6c6d257867d608956
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
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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