ghsa-xcwv-gj8q-63vm
Vulnerability from github
Published
2025-03-18 21:31
Modified
2025-03-18 21:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

RDMA/irdma: Prevent some integer underflows

My static checker complains that:

drivers/infiniband/hw/irdma/ctrl.c:3605 irdma_sc_ceq_init()
warn: can subtract underflow 'info->dev->hmc_fpm_misc.max_ceqs'?

It appears that "info->dev->hmc_fpm_misc.max_ceqs" comes from the firmware in irdma_sc_parse_fpm_query_buf() so, yes, there is a chance that it could be zero. Even if we trust the firmware, it's easy enough to change the condition just as a hardenning measure.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49208"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-191"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:57Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Prevent some integer underflows\n\nMy static checker complains that:\n\n    drivers/infiniband/hw/irdma/ctrl.c:3605 irdma_sc_ceq_init()\n    warn: can subtract underflow \u0027info-\u003edev-\u003ehmc_fpm_misc.max_ceqs\u0027?\n\nIt appears that \"info-\u003edev-\u003ehmc_fpm_misc.max_ceqs\" comes from the firmware\nin irdma_sc_parse_fpm_query_buf() so, yes, there is a chance that it could\nbe zero.  Even if we trust the firmware, it\u0027s easy enough to change the\ncondition just as a hardenning measure.",
  "id": "GHSA-xcwv-gj8q-63vm",
  "modified": "2025-03-18T21:31:59Z",
  "published": "2025-03-18T21:31:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49208"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6f6dbb819dfc1a35bcb8b709b5c83a3ea8beff75"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7340c3675d7ac946f4019b84cd7c64ed542dfe4c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d52dab6e03550f9c97121b0c11c0a3ed78ee76a4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f21056f15bbeacab7b4b87af232f5599d1f2bff1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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