Callback execution after undrained ovpn module unload
Published Sep 3, 2026 · Updated Sep 3, 2026
A workqueue teardown race in Linux kernel 6.16 through 7.1.9 allows attackers to run ovpn callbacks after module text is freed. The ovpn module queues callbacks on global system workqueues, so module exit lacks a driver-owned drain point and can free module text before a worker returns. Reachability requires ovpn teardown while deferred work is still executing; the published record does not specify a resulting crash, code execution, or privilege boundary.
Summary
What happened
A workqueue teardown race in Linux kernel 6.16 through 7.1.9 allows attackers to run ovpn callbacks after module text is freed. The ovpn module queues callbacks on global system workqueues, so module exit lacks a driver-owned drain point and can free module text before a worker returns. Reachability requires ovpn teardown while deferred work is still executing; the published record does not specify a resulting crash, code execution, or privilege boundary.
The record
- CVE
- CVE-2026-80753
- Published
- Sep 3, 2026
- Updated
- Sep 3, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 3, 2026CVE publishedPublication date reported by the CVE source.
- Sep 3, 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=11851cbd60ea1e5abbd97619d69845ead99303d6 <bbe81f40582d451ac849b20707784220f33a23bd
- Affected versionversion=11851cbd60ea1e5abbd97619d69845ead99303d6 <e9714db8041763f59dde152c812b96b3de05c6d9
- Affected versionversion=6.16
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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