CVE-2026-43283
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Memory Leak in Linux Kernel Ethernet Driver

Publication date: 2026-05-06

Last updated on: 2026-05-06

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle dma_free_coherent() in error path takes priv->rx_buf.alloc_len as the dma handle. This would lead to improper unmapping of the buffer. Change the dma handle to priv->rx_buf.alloc_phys.
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Meta Information
Published
2026-05-06
Last Modified
2026-05-06
Generated
2026-05-07
AI Q&A
2026-05-06
EPSS Evaluated
N/A
NVD
CVE-2026-43283
EUVD
EUVD-2026-27678
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability exists in the Linux kernel's ethernet driver ec_bhf. It involves the function dma_free_coherent() which, in an error path, incorrectly uses priv->rx_buf.alloc_len as the DMA handle. This misuse leads to improper unmapping of the buffer. The fix changes the DMA handle to use priv->rx_buf.alloc_phys instead, ensuring proper unmapping.


How can this vulnerability impact me? :

Improper unmapping of DMA buffers can lead to memory corruption or data integrity issues. This could potentially cause system instability, crashes, or unexpected behavior in network operations that rely on the affected ethernet driver.


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