ghsa-cp24-c7w4-6gh4
Vulnerability from github
Published
2024-08-22 03:31
Modified
2024-09-12 15:32
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:

net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()

During driver initialization, the pointer of card info, i.e. the variable 'ci' is required. However, the definition of 'com20020pci_id_table' reveals that this field is empty for some devices, which will cause null pointer dereference when initializing these devices.

The following log reveals it:

[ 3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci] [ 3.975181] Call Trace: [ 3.976208] local_pci_probe+0x13f/0x210 [ 3.977248] pci_device_probe+0x34c/0x6d0 [ 3.977255] ? pci_uevent+0x470/0x470 [ 3.978265] really_probe+0x24c/0x8d0 [ 3.978273] __driver_probe_device+0x1b3/0x280 [ 3.979288] driver_probe_device+0x50/0x370

Fix this by checking whether the 'ci' is a null pointer first.

Show details on source website

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{
   affected: [],
   aliases: [
      "CVE-2022-48908",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-476",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-08-22T02:15:05Z",
      severity: "MODERATE",
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()\n\nDuring driver initialization, the pointer of card info, i.e. the\nvariable 'ci' is required. However, the definition of\n'com20020pci_id_table' reveals that this field is empty for some\ndevices, which will cause null pointer dereference when initializing\nthese devices.\n\nThe following log reveals it:\n\n[    3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]\n[    3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci]\n[    3.975181] Call Trace:\n[    3.976208]  local_pci_probe+0x13f/0x210\n[    3.977248]  pci_device_probe+0x34c/0x6d0\n[    3.977255]  ? pci_uevent+0x470/0x470\n[    3.978265]  really_probe+0x24c/0x8d0\n[    3.978273]  __driver_probe_device+0x1b3/0x280\n[    3.979288]  driver_probe_device+0x50/0x370\n\nFix this by checking whether the 'ci' is a null pointer first.",
   id: "GHSA-cp24-c7w4-6gh4",
   modified: "2024-09-12T15:32:59Z",
   published: "2024-08-22T03:31:34Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2022-48908",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/5f394102ee27dbf051a4e283390cd8d1759dacea",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/8e3bc7c5bbf87e86e9cd652ca2a9166942d86206",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/b838add93e1dd98210482dc433768daaf752bdef",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/ca0bdff4249a644f2ca7a49d410d95b8dacf1f72",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/e50c589678e50f8d574612e473ca60ef45190896",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/ea372aab54903310756217d81610901a8e66cb7d",
      },
   ],
   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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