fkie_cve-2025-38533
Vulnerability from fkie_nvd
Published
2025-08-16 12:15
Modified
2025-08-18 20:16
Severity ?
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
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"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."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: libwx: correcci\u00f3n del uso del DMA del b\u00fafer Rx. La estructura wx_rx_buffer conten\u00eda dos campos de direcci\u00f3n DMA: \u0027dma\u0027 y \u0027page_dma\u0027. Sin embargo, solo \u0027page_dma\u0027 se inicializ\u00f3 y se utiliz\u00f3 para programar el descriptor Rx. Sin embargo, \u0027dma\u0027 no se inicializ\u00f3 y se utiliz\u00f3 en algunas rutas. Esto podr\u00eda provocar un comportamiento indefinido, incluyendo errores de DMA o use after free, si se utilizaba \u0027dma\u0027 sin inicializar. Si bien este error a\u00fan no se ha producido, conviene corregirlo en el c\u00f3digo."
}
],
"id": "CVE-2025-38533",
"lastModified": "2025-08-18T20:16:28.750",
"metrics": {},
"published": "2025-08-16T12:15:28.957",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…