CVE-2026-43462
Analyzed Analyzed - Analysis Complete
Memory Leak in Spacemit Linux Kernel Network Driver

Publication date: 2026-05-08

Last updated on: 2026-05-20

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: net: spacemit: Fix error handling in emac_tx_mem_map() The DMA mappings were leaked on mapping error. Free them with the existing emac_free_tx_buf() function.
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Meta Information
Published
2026-05-08
Last Modified
2026-05-20
Generated
2026-06-19
AI Q&A
2026-05-08
EPSS Evaluated
2026-06-18
NVD
CVE-2026-43462
EUVD
EUVD-2026-28768
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel From 6.19 (inc) to 6.19.9 (exc)
linux linux_kernel From 6.18 (inc) to 6.18.19 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Linux kernel's network subsystem, specifically in the spacemit component. It involves improper error handling in the function emac_tx_mem_map(). When an error occurs during DMA (Direct Memory Access) mapping, the allocated DMA mappings were not properly released, causing a resource leak. The fix involves freeing these DMA mappings using the existing emac_free_tx_buf() function to prevent the leak.

Impact Analysis

The impact of this vulnerability is primarily related to resource leakage in the Linux kernel's network subsystem. If DMA mappings are leaked due to improper error handling, it can lead to increased memory usage and potentially degrade system performance or stability over time. In severe cases, this could cause system crashes or denial of service if resources are exhausted.

Mitigation Strategies

The vulnerability in the Linux kernel related to DMA mappings being leaked on mapping error has been fixed by correcting error handling in the emac_tx_mem_map() function.

To mitigate this vulnerability, you should update your Linux kernel to a version that includes this fix.

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