ghsa-r42x-vw8p-w99g
Vulnerability from github
Published
2025-02-27 18:31
Modified
2025-02-27 18:31
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:

scsi: target: tcmu: Fix possible page UAF

tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount properly and just returns page pointer. When tcmu_try_get_data_page() returns, the returned page may have been freed by tcmu_blocks_release().

We need to get_page() under cmdr_lock to avoid concurrent tcmu_blocks_release().

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49053"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:42Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: tcmu: Fix possible page UAF\n\ntcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not\ntake refcount properly and just returns page pointer. When\ntcmu_try_get_data_page() returns, the returned page may have been freed by\ntcmu_blocks_release().\n\nWe need to get_page() under cmdr_lock to avoid concurrent\ntcmu_blocks_release().",
  "id": "GHSA-r42x-vw8p-w99g",
  "modified": "2025-02-27T18:31:08Z",
  "published": "2025-02-27T18:31:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49053"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6968f7a367f128d120447360734344d5a3d5336"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a9564d84ed9f6ee71017d062d0d2182154294a4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aec36b98a1bbaa84bfd8299a306e4c12314af626"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7c5d79e50be6e06b669141e3db1f977a0dd4e8e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3e0e067d5b34e4a68e3cc55f8eebc413f56f8ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb7a5115422fbd6a4d505e8844f1ef5529f10489"
    }
  ],
  "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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