System crash via mismatched DMA unmapping
Published Dec 29, 2024 · Updated Sep 8, 2026
Improper input validation in the Linux stmmac driver allows local users to crash affected Linux and SIMATIC systems during TSO. In stmmac_tso_xmit(), an offset DMA cookie is stored and later passed to dma_unmap_single() instead of the original value returned by dma_map_single(). Low-privileged local access, an stmmac device with more than 32-bit DMA addressing, and TCP segmentation offload are required; the result is a kernel oops and service interruption.
Summary
What happened
Improper input validation in the Linux stmmac driver allows local users to crash affected Linux and SIMATIC systems during TSO. In stmmac_tso_xmit(), an offset DMA cookie is stored and later passed to dma_unmap_single() instead of the original value returned by dma_map_single(). Low-privileged local access, an stmmac device with more than 32-bit DMA addressing, and TCP segmentation offload are required; the result is a kernel oops and service interruption.
The record
- CVE
- CVE-2024-56719
- Published
- Dec 29, 2024
- Updated
- Sep 8, 2026
- Vendor
- Siemens
- Product
- SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
- Classifications
- CWE-20, T1529
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 29, 2024CVE 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=V3.1.5 <*
- Affected versionversion=V3.1.6 <*
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Technologies
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Your stack
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