Unspecified local impact via incomplete x_tables teardown
Published Jul 19, 2026 · Updated Jul 19, 2026
Improper table teardown in Linux Kernel allows local users to trigger unspecified impact through concurrent x_tables socket operations. The pre-exit path removes a table from the active per-network list, while the former unregister path expects that list to retain the table for final cleanup. Reaching the condition requires set/getsockopt activity during namespace teardown or module removal; Linux has not published a concrete security consequence.
Summary
What happened
Improper table teardown in Linux Kernel allows local users to trigger unspecified impact through concurrent x_tables socket operations. The pre-exit path removes a table from the active per-network list, while the former unregister path expects that list to retain the table for final cleanup. Reaching the condition requires set/getsockopt activity during namespace teardown or module removal; Linux has not published a concrete security consequence.
The record
- CVE
- CVE-2026-64078
- Published
- Jul 19, 2026
- Updated
- Jul 19, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 19, 2026CVE publishedPublication date reported by the CVE source.
- Jul 19, 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=5.15
- Affected versionversion=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <8026e5163cca1d1db436c7bfb89ddea8b5e8c2cf
- Affected versionversion=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <86ee5bc9c0f0e652e19f395675a432de11b75514
- Affected versionversion=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <b4597d5fd7d2f8cebfffd40dffb5e003cc78964c
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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