CVE-2025-38533

Summary

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.

Impact & exploitability

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5Patch
• https://git.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367dPatch
• https://git.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0Patch
• https://git.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9Patch