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CVE WatchJul 30, 2026

CVE-2025-38533

In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix the using of Rx buffer DMA The wx_rx_buffer structure

CVSS

9.8

Critical

EPSS

0.3%

p22

KEV

—

Exploit Today

7

0-100

Published: Aug 16, 2025 · Last modified: Jul 30, 2026 · CWE-787

EPSS · 30d
0.3%EPSS · 30 days0.3%
2026-08-112026-09-07
Technical description

In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix the using of Rx buffer DMA The wx_rx_buffer structure contained two DMA address fields: 'dma' and 'page_dma'. However, only 'page_dma' was actually initialized and used to program the Rx descriptor. But 'dma' was uninitialized and used in some paths. This could lead to undefined behavior, including DMA errors or use-after-free, if the uninitialized 'dma' was used. Althrough such error has not yet occurred, it is worth fixing in the code.

Official references
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