ghsa-5h9q-vg2v-xg75
Vulnerability from github
Published
2025-06-18 12:30
Modified
2025-06-18 12:30
Details

In the Linux kernel, the following vulnerability has been resolved:

xsk: Fix corrupted packets for XDP_SHARED_UMEM

Fix an issue in XDP_SHARED_UMEM mode together with aligned mode where packets are corrupted for the second and any further sockets bound to the same umem. In other words, this does not affect the first socket bound to the umem. The culprit for this bug is that the initialization of the DMA addresses for the pre-populated xsk buffer pool entries was not performed for any socket but the first one bound to the umem. Only the linear array of DMA addresses was populated. Fix this by populating the DMA addresses in the xsk buffer pool for every socket bound to the same umem.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49972"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:24Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: Fix corrupted packets for XDP_SHARED_UMEM\n\nFix an issue in XDP_SHARED_UMEM mode together with aligned mode where\npackets are corrupted for the second and any further sockets bound to\nthe same umem. In other words, this does not affect the first socket\nbound to the umem. The culprit for this bug is that the initialization\nof the DMA addresses for the pre-populated xsk buffer pool entries was\nnot performed for any socket but the first one bound to the umem. Only\nthe linear array of DMA addresses was populated. Fix this by populating\nthe DMA addresses in the xsk buffer pool for every socket bound to the\nsame umem.",
  "id": "GHSA-5h9q-vg2v-xg75",
  "modified": "2025-06-18T12:30:38Z",
  "published": "2025-06-18T12:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49972"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c75891d56ab6fe5ba0d415bfad91d514a4027cd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58ca14ed98c87cfe0d1408cc65a9745d9e9b7a56"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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