Post-power-off hardware access via unsynchronized threaded IRQ
Published Sep 16, 2026 · Updated Sep 16, 2026
Race condition in the Qualcomm Iris VPU driver in Linux 6.15 allows attackers to access hardware registers after VPU power-off. iris_vpu_power_off() calls disable_irq_nosync(), which returns without waiting for an already queued threaded interrupt handler to finish. The condition requires the Qualcomm Iris video path and a power-off race with an in-flight handler; the published record identifies register access after shutdown but no further consequence.
Summary
What happened
Race condition in the Qualcomm Iris VPU driver in Linux 6.15 allows attackers to access hardware registers after VPU power-off. iris_vpu_power_off() calls disable_irq_nosync(), which returns without waiting for an already queued threaded interrupt handler to finish. The condition requires the Qualcomm Iris video path and a power-off race with an in-flight handler; the published record identifies register access after shutdown but no further consequence.
The record
- CVE
- CVE-2026-89869
- Published
- Sep 16, 2026
- Updated
- Sep 16, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 16, 2026CVE publishedPublication date reported by the CVE source.
- Sep 16, 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=6.15
- Affected versionversion=bb8a95aa038e099f5ec82c466e996b006e05abd7 <b9c2215bdedc9c532a7e9d57ec49ee1b6381f863
- Affected versionversion=bb8a95aa038e099f5ec82c466e996b006e05abd7 <d7f34cbaced92069400fc5d71fefe3cb4c748da8
- Affected versionversion=bb8a95aa038e099f5ec82c466e996b006e05abd7 <ff98cd2b8b54cf96bccace2f7b7e4775cdccaf02
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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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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