ghsa-7797-cc95-p257
Vulnerability from github
Published
2024-10-21 18:30
Modified
2024-12-14 21:31
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:

drm/amd/display: Add NULL check for clk_mgr and clk_mgr->funcs in dcn30_init_hw

This commit addresses a potential null pointer dereference issue in the dcn30_init_hw function. The issue could occur when dc->clk_mgr or dc->clk_mgr->funcs is null.

The fix adds a check to ensure dc->clk_mgr and dc->clk_mgr->funcs is not null before accessing its functions. This prevents a potential null pointer dereference.

Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:789 dcn30_init_hw() error: we previously assumed 'dc->clk_mgr' could be null (see line 628)

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{
  "affected": [],
  "aliases": [
    "CVE-2024-49917"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:13Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add NULL check for clk_mgr and clk_mgr-\u003efuncs in dcn30_init_hw\n\nThis commit addresses a potential null pointer dereference issue in the\n`dcn30_init_hw` function. The issue could occur when `dc-\u003eclk_mgr` or\n`dc-\u003eclk_mgr-\u003efuncs` is null.\n\nThe fix adds a check to ensure `dc-\u003eclk_mgr` and `dc-\u003eclk_mgr-\u003efuncs` is\nnot null before accessing its functions. This prevents a potential null\npointer dereference.\n\nReported by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:789 dcn30_init_hw() error: we previously assumed \u0027dc-\u003eclk_mgr\u0027 could be null (see line 628)",
  "id": "GHSA-7797-cc95-p257",
  "modified": "2024-12-14T21:31:32Z",
  "published": "2024-10-21T18:30:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49917"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/205e3b96cc9aa9211fd2c849a16245cf236b2d36"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23cb6139543580dc36743586ca86fbb3f7ab2c9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5443c83eb8fd2f88c71ced38848fbf744d6206a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56c326577971adc3a230f29dfd3aa3abdd505f5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cba7fec864172dadd953daefdd26e01742b71a6a"
    }
  ],
  "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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