Kernel crash via racy bonding teardown
Published Jun 25, 2024 · Updated May 11, 2026
Race condition in Linux kernel 6.6 bonding teardown allows local users with administrative privileges to crash the kernel. The bonding exit path removes the shared debugfs tree before netlink unregisters bond devices, so bond_debug_unregister passes a stale or null root to debugfs removal and triggers an oops. Reaching the flaw requires privileged module removal, a concurrent privileged bond deletion, or a module-initialization error; the bounded consequence is a kernel crash.
Summary
What happened
Race condition in Linux kernel 6.6 bonding teardown allows local users with administrative privileges to crash the kernel. The bonding exit path removes the shared debugfs tree before netlink unregisters bond devices, so bond_debug_unregister passes a stale or null root to debugfs removal and triggers an oops. Reaching the flaw requires privileged module removal, a concurrent privileged bond deletion, or a module-initialization error; the bounded consequence is a kernel crash.
The record
- CVE
- CVE-2024-39296
- Published
- Jun 25, 2024
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499.004
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Jun 25, 2024CVE publishedPublication date reported by the CVE source.
- May 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?
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- Affected versionversion=6.6
- Affected versionversion=cc317ea3d9272fab4f6fef527c865f30ca479394 <a45835a0bb6ef7d5ddbc0714dd760de979cb6ece
- Affected versionversion=cc317ea3d9272fab4f6fef527c865f30ca479394 <cf48aee81103ca06d09d73d33fb72f1191069aa6
- Affected versionversion=cc317ea3d9272fab4f6fef527c865f30ca479394 <f07224c16678a8af54ddc059b3d2d51885d7f35e
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What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
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Technologies
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