by Kastro
Paper/Archive/CVE-2025-38533

CVE-2025-38533

Linux Linux — net: libwx: fix the using of Rx buffer DMA

EPSS 0.3%CVSS 9.8
critical.is priorityof 100
34
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 24.1.241 × 204.8No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Linux3c47e8ae113a68da47987750d9896e325d0aeedd – < 027701180a7bcb64c42eab291133ef0c87b5b6c5027701180a7bcb64c42eab291133ef0c87b5b6c5CNA
Linux3c47e8ae113a68da47987750d9896e325d0aeedd – < ba7c793f96c1c2b944bb6f423d7243f3afc30fe9ba7c793f96c1c2b944bb6f423d7243f3afc30fe9CNA
Linux3c47e8ae113a68da47987750d9896e325d0aeedd – < 05c37b574997892a40a0e9b9b88a481566b2367d05c37b574997892a40a0e9b9b88a481566b2367dCNA
Linux3c47e8ae113a68da47987750d9896e325d0aeedd – < 5fd77cc6bd9b368431a815a780e407b7781bcca05fd77cc6bd9b368431a815a780e407b7781bcca0CNA
Linux6.36.6.100CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgit.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5refgit.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9refgit.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367drefgit.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0