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->funcs 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->clk_mgr` or\n`dc->clk_mgr->funcs` is null.\n\nThe fix adds a check to ensure `dc->clk_mgr` and `dc->clk_mgr->funcs` 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 'dc->clk_mgr' 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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