Unspecified impact via unlocked I3C descriptor dereference
Published Sep 11, 2026 · Updated Sep 11, 2026
A race condition in the I3C subsystem of The Linux Kernel Organization Linux 6.19 allows attackers to cause unspecified impact. The i3c_device_get_supported_xfer_mode() function dereferences dev->desc without holding bus->lock, although the descriptor is unsafe to access unlocked. Public upstream material identifies neither an attacker-controlled trigger nor a consequence beyond the unsafe kernel access.
Summary
What happened
A race condition in the I3C subsystem of The Linux Kernel Organization Linux 6.19 allows attackers to cause unspecified impact. The i3c_device_get_supported_xfer_mode() function dereferences dev->desc without holding bus->lock, although the descriptor is unsafe to access unlocked. Public upstream material identifies neither an attacker-controlled trigger nor a consequence beyond the unsafe kernel access.
The record
- CVE
- CVE-2026-80954
- 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=256a21743d911f94ce92fe28f793cd586f3860b2 <251db58324ea4792c3f9f692ab09be148e051969
- Affected versionversion=256a21743d911f94ce92fe28f793cd586f3860b2 <8bed7f4fa710914b7f05fd59998316bfb4d43385
- Affected versionversion=6.19
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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