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

{
  "id": "96c910502e87ea492f5b76a802e6650184bd60fb4a2df5920068d53ac377fae2",
  "url": "https://osv.dev/vulnerability/CVE-2024-49917",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/amd/display: Add NULL check for clk_mgr and clk_mgr->funcs in dcn30_init_hw",
    "summary": "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)",
    "evidence": "osv:CVE-2024-49917",
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      "modified": "2026-10-28T02:30:38.930946142Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/205e3b96cc9aa9211fd2c849a16245cf236b2d36",
        "https://git.kernel.org/stable/c/23cb6139543580dc36743586ca86fbb3f7ab2c9d",
        "https://git.kernel.org/stable/c/5443c83eb8fd2f88c71ced38848fbf744d6206a2",
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        "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49917.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-49917",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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    "security_relevant": true,
    "severity_evidence": null
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  "source_id": "core-osv",
  "document_id": 505990,
  "published_at": "2024-10-21T18:01:44.295+00:00"
}