CVE-2025-68759
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2026-01-05

Last updated on: 2026-01-19

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring() In rtl8180_init_rx_ring(), memory is allocated for skb packets and DMA allocations in a loop. When an allocation fails, the previously successful allocations are not freed on exit. Fix that by jumping to err_free_rings label on error, which calls rtl8180_free_rx_ring() to free the allocations. Remove the free of rx_ring in rtl8180_init_rx_ring() error path, and set the freed priv->rx_buf entry to null, to avoid double free.
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Meta Information
Published
2026-01-05
Last Modified
2026-01-19
Generated
2026-06-16
AI Q&A
2026-01-05
EPSS Evaluated
2026-06-15
NVD
CVE-2025-68759
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a potential memory leak in the Linux kernel's rtl818x wifi driver, specifically in the rtl8180_init_rx_ring() function. When memory allocations for skb packets and DMA fail during initialization, the previously allocated memory is not freed properly, leading to memory leaks. The fix involves ensuring that on allocation failure, the code jumps to an error handling label that frees all previously allocated memory to prevent leaks and avoids double freeing memory.

Impact Analysis

This vulnerability can lead to memory leaks in the Linux kernel's wifi driver, which may cause increased memory usage and potentially degrade system performance or stability over time. In severe cases, it could lead to system crashes or denial of service if memory resources are exhausted.

Mitigation Strategies

Apply the patch or update to the fixed version of the Linux kernel that includes the fix for rtl8180_init_rx_ring() memory leak. This involves ensuring your system is running a kernel version where the error handling in rtl8180_init_rx_ring() properly frees allocated memory on failure, preventing memory leaks.

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