ghsa-c9xc-697w-f6jm
Vulnerability from github
Published
2024-05-03 18:30
Modified
2024-05-03 18:30
Details

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

ice: Fix DMA mappings leak

Fix leak, when user changes ring parameters. During reallocation of RX buffers, new DMA mappings are created for those buffers. New buffers with different RX ring count should substitute older ones, but those buffers were freed in ice_vsi_cfg_rxq and reallocated again with ice_alloc_rx_buf. kfree on rx_buf caused leak of already mapped DMA. Reallocate ZC with xdp_buf struct, when BPF program loads. Reallocate back to rx_buf, when BPF program unloads. If BPF program is loaded/unloaded and XSK pools are created, reallocate RX queues accordingly in XDP_SETUP_XSK_POOL handler.

Steps for reproduction: while : do for ((i=0; i<=8160; i=i+32)) do ethtool -G enp130s0f0 rx $i tx $i sleep 0.5 ethtool -g enp130s0f0 done done

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48690"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-03T18:15:08Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix DMA mappings leak\n\nFix leak, when user changes ring parameters.\nDuring reallocation of RX buffers, new DMA mappings are created for\nthose buffers. New buffers with different RX ring count should\nsubstitute older ones, but those buffers were freed in ice_vsi_cfg_rxq\nand reallocated again with ice_alloc_rx_buf. kfree on rx_buf caused\nleak of already mapped DMA.\nReallocate ZC with xdp_buf struct, when BPF program loads. Reallocate\nback to rx_buf, when BPF program unloads.\nIf BPF program is loaded/unloaded and XSK pools are created, reallocate\nRX queues accordingly in XDP_SETUP_XSK_POOL handler.\n\nSteps for reproduction:\nwhile :\ndo\n\tfor ((i=0; i\u003c=8160; i=i+32))\n\tdo\n\t\tethtool -G enp130s0f0 rx $i tx $i\n\t\tsleep 0.5\n\t\tethtool -g enp130s0f0\n\tdone\ndone",
  "id": "GHSA-c9xc-697w-f6jm",
  "modified": "2024-05-03T18:30:37Z",
  "published": "2024-05-03T18:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48690"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07f40e9f0ff342eb3e97d5c544783b7cb641689c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e753eb675f0523207b184558638ee2eed6c9ac2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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