Kernel crash via null UBIFS root dereference
Published Mar 6, 2025 · Updated Sep 8, 2026
NULL pointer dereference in the Linux UBIFS debug path allows local users to crash an affected kernel while dumping its TNC tree. After slab-cache clearing sets c->zroot.znode to NULL, the debug dump path dereferences that pointer instead of skipping the tree walk. Reaching the fault requires low-privileged local access and a UBIFS context with a cleared slab cache; the documented consequence is a kernel crash, not data disclosure or modification.
Summary
What happened
NULL pointer dereference in the Linux UBIFS debug path allows local users to crash an affected kernel while dumping its TNC tree. After slab-cache clearing sets c->zroot.znode to NULL, the debug dump path dereferences that pointer instead of skipping the tree walk. Reaching the fault requires low-privileged local access and a UBIFS context with a cleared slab cache; the documented consequence is a kernel crash, not data disclosure or modification.
The record
- CVE
- CVE-2024-58058
- Published
- Mar 6, 2025
- Updated
- Sep 8, 2026
- Vendor
- Siemens
- Product
- SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
- Classifications
- CWE-476, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 6, 2025CVE publishedPublication date reported by the CVE source.
- Sep 8, 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=V3.1.6 <*
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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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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