Kernel fault via probe-time interrupt race
Published Sep 11, 2026 · Updated Sep 11, 2026
Race condition in the Linux 6.18 ADI I3C master driver allows attackers to trigger an uninitialized lock access during device probe. adi_i3c_master_probe() unmasks command interrupts before initializing xferqueue.lock, allowing adi_i3c_master_irq() to acquire an uninitialized lock. Reachability requires the affected controller and a pending command interrupt in that initialization window; the published reproduction reports a lockdep fault but no broader consequence.
Summary
What happened
Race condition in the Linux 6.18 ADI I3C master driver allows attackers to trigger an uninitialized lock access during device probe. adi_i3c_master_probe() unmasks command interrupts before initializing xferqueue.lock, allowing adi_i3c_master_irq() to acquire an uninitialized lock. Reachability requires the affected controller and a pending command interrupt in that initialization window; the published reproduction reports a lockdep fault but no broader consequence.
The record
- CVE
- CVE-2026-80953
- 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=6.18
- Affected versionversion=a79ac2cdc91d6be3010f2e9a3b2a2ccfc26e2086 <8a53f9102a0d3eeb8784999f925028acf339c276
- Affected versionversion=a79ac2cdc91d6be3010f2e9a3b2a2ccfc26e2086 <a15a1b95de980362c14f32f519b293b0d12ce86f
- Affected versionversion=a79ac2cdc91d6be3010f2e9a3b2a2ccfc26e2086 <de8c32b0a246bbb4b44ec29e12769496a0bf66f7
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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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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