GHSA-QMW3-6H2F-2GVH
Vulnerability from github – Published: 2025-08-16 12:30 – Updated: 2025-11-18 18:32In 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": [],
"aliases": [
"CVE-2025-38533"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-16T12:15:28Z",
"severity": "HIGH"
},
"details": "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.",
"id": "GHSA-qmw3-6h2f-2gvh",
"modified": "2025-11-18T18:32:48Z",
"published": "2025-08-16T12:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38533"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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