ghsa-x9wp-3948-xg4x
Vulnerability from github
Published
2024-07-16 12:30
Modified
2024-08-07 21:31
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: pm8001: Fix use-after-free for aborted SSP/STP sas_task

Currently a use-after-free may occur if a sas_task is aborted by the upper layer before we handle the I/O completion in mpi_ssp_completion() or mpi_sata_completion().

In this case, the following are the two steps in handling those I/O completions:

  • Call complete() to inform the upper layer handler of completion of the I/O.

  • Release driver resources associated with the sas_task in pm8001_ccb_task_free() call.

When complete() is called, the upper layer may free the sas_task. As such, we should not touch the associated sas_task afterwards, but we do so in the pm8001_ccb_task_free() call.

Fix by swapping the complete() and pm8001_ccb_task_free() calls ordering.

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{
   affected: [],
   aliases: [
      "CVE-2022-48792",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-416",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-07-16T12:15:03Z",
      severity: "HIGH",
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm8001: Fix use-after-free for aborted SSP/STP sas_task\n\nCurrently a use-after-free may occur if a sas_task is aborted by the upper\nlayer before we handle the I/O completion in mpi_ssp_completion() or\nmpi_sata_completion().\n\nIn this case, the following are the two steps in handling those I/O\ncompletions:\n\n - Call complete() to inform the upper layer handler of completion of\n   the I/O.\n\n - Release driver resources associated with the sas_task in\n   pm8001_ccb_task_free() call.\n\nWhen complete() is called, the upper layer may free the sas_task. As such,\nwe should not touch the associated sas_task afterwards, but we do so in the\npm8001_ccb_task_free() call.\n\nFix by swapping the complete() and pm8001_ccb_task_free() calls ordering.",
   id: "GHSA-x9wp-3948-xg4x",
   modified: "2024-08-07T21:31:43Z",
   published: "2024-07-16T12:30:40Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2022-48792",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/d9d93f32534a0a80a1c26bdb0746d90a7b19c2c2",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/df7abcaa1246e2537ab4016077b5443bb3c09378",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/f61f9fccb2cb4bb275674a79d638704db6bc2171",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/fe9ac3eaa2e387a5742b380b73a5a6bc237bf184",
      },
   ],
   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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