ghsa-mpc5-232j-wwmm
Vulnerability from github
Published
2025-02-27 21:32
Modified
2025-02-27 21:32
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

iommu/arm-smmu-v3-sva: Fix mm use-after-free

We currently call arm64_mm_context_put() without holding a reference to the mm, which can result in use-after-free. Call mmgrab()/mmdrop() to ensure the mm only gets freed after we unpinned the ASID.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49426"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:19Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu-v3-sva: Fix mm use-after-free\n\nWe currently call arm64_mm_context_put() without holding a reference to\nthe mm, which can result in use-after-free. Call mmgrab()/mmdrop() to\nensure the mm only gets freed after we unpinned the ASID.",
  "id": "GHSA-mpc5-232j-wwmm",
  "modified": "2025-02-27T21:32:14Z",
  "published": "2025-02-27T21:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49426"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9aa215450888cf29af0c479e14a712dc6b0c506c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cbd23144f7662b00bcde32a938c4a4057e476d68"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc90f13ea0dcd960e5002d204fa55cec4e0db2fa"
    }
  ],
  "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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