ghsa-c84w-j8mj-57ch
Vulnerability from github
Published
2024-05-22 09:31
Modified
2024-11-01 18:31
Severity ?
4.6 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details

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

comedi: ni_usb6501: fix NULL-deref in command paths

The driver uses endpoint-sized USB transfer buffers but had no sanity checks on the sizes. This can lead to zero-size-pointer dereferences or overflowed transfer buffers in ni6501_port_command() and ni6501_counter_command() if a (malicious) device has smaller max-packet sizes than expected (or when doing descriptor fuzz testing).

Add the missing sanity checks to probe().

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{
   affected: [],
   aliases: [
      "CVE-2021-47476",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-476",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-05-22T09:15:09Z",
      severity: "MODERATE",
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: ni_usb6501: fix NULL-deref in command paths\n\nThe driver uses endpoint-sized USB transfer buffers but had no sanity\nchecks on the sizes. This can lead to zero-size-pointer dereferences or\noverflowed transfer buffers in ni6501_port_command() and\nni6501_counter_command() if a (malicious) device has smaller max-packet\nsizes than expected (or when doing descriptor fuzz testing).\n\nAdd the missing sanity checks to probe().",
   id: "GHSA-c84w-j8mj-57ch",
   modified: "2024-11-01T18:31:26Z",
   published: "2024-05-22T09:31:46Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2021-47476",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/4a9d43cb5d5f39fa39fc1da438517004cc95f7ea",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/58478143771b20ab219937b1c30a706590a59224",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/907767da8f3a925b060c740e0b5c92ea7dbec440",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/aa39738423503825625853b643b9e99d11c23816",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/b0156b7c9649d8f55a2ce3d3258509f1b2a181c3",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/bc51111bf6e8e7b6cc94b133e4c291273a16acd1",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/d6a727a681a39ae4f73081a9bedb45d14f95bdd1",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/df7b1238f3b599a0b9284249772cdfd1ea83a632",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
         type: "CVSS_V3",
      },
   ],
}


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