Kernel memory corruption via off-by-one terminator write
Published Jun 2, 2025 · Updated Jun 2, 2025
Heap-based buffer overflow in Ne.app NeKernel 0.0.2 allows attackers to corrupt heap metadata through a 256-byte file name. The rt_copy_memory function copies len bytes and then writes a null terminator to dst[len], one byte beyond a destination whose size equals len. The CreateCatalog file-system path reaches this operation, exposing undefined behavior that can crash the kernel or enable privilege escalation.
Summary
What happened
Heap-based buffer overflow in Ne.app NeKernel 0.0.2 allows attackers to corrupt heap metadata through a 256-byte file name. The rt_copy_memory function copies len bytes and then writes a null terminator to dst[len], one byte beyond a destination whose size equals len. The CreateCatalog file-system path reaches this operation, exposing undefined behavior that can crash the kernel or enable privilege escalation.
The record
- CVE
- CVE-2025-48990
- Published
- Jun 2, 2025
- Updated
- Jun 2, 2025
- Vendor
- Ne.app
- Product
- NeKernel
- Classifications
- CWE-122, T1068
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 2, 2025CVE publishedPublication date reported by the CVE source.
- Jun 2, 2025Record 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== 0.0.2
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
Public exploit references
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Technologies
Your stack
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Your stack
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