FKIE_CVE-2025-38533

Vulnerability from fkie_nvd - Published: 2025-08-16 12:15 - Updated: 2025-11-18 18:17
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: libwx: fix the using of Rx buffer DMA\n\nThe wx_rx_buffer structure contained two DMA address fields: \u0027dma\u0027 and\n\u0027page_dma\u0027. However, only \u0027page_dma\u0027 was actually initialized and used\nto program the Rx descriptor. But \u0027dma\u0027 was uninitialized and used in\nsome paths.\n\nThis could lead to undefined behavior, including DMA errors or\nuse-after-free, if the uninitialized \u0027dma\u0027 was used. Althrough such\nerror has not yet occurred, it is worth fixing in the code."
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  "lastModified": "2025-11-18T18:17:01.150",
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Detection rules are retrieved from Rulezet.