{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "cd44f127c1d42833a32ba0a0965255ee6184f8c1"
            },
            {
              "fixed": "1183dc2450a268a536a15da8b106ec520cdbd19f"
            },
            {
              "fixed": "011d8de504bc84402aabc1dda1cf0552fe9a5af2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.1.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93263.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: eswin: Zero-initialize stack-allocated clk_init_data\n\neswin_clk_register_pll() and eswin_register_clkdiv() declare a struct\nclk_init_data on the stack and only initialize some of its fields\n(parent_data respectively parent_hws). clk_core_populate_parent_map()\nchecks parent_names first and parent_data second before falling back\nto parent_hws, so leftover stack garbage in the uninitialized fields\nhijacks parent resolution and the clk core dereferences a bogus\npointer:\n\n  Unable to handle kernel NULL pointer dereference at virtual address 000000000000000c\n  Oops [#1]\n  epc : __clk_register+0x31a/0x7f0\n  [\u003cffffffff805dc774\u003e] __clk_register+0x31a/0x7f0\n  [\u003cffffffff805dcd76\u003e] devm_clk_hw_register+0x2a/0x94\n  [\u003cffffffff805e319a\u003e] eswin_register_clkdiv+0x80/0xd0\n  [\u003cffffffff805e34a0\u003e] eswin_clk_register_clks+0x162/0x1a0\n  [\u003cffffffff805e3736\u003e] eic7700_clk_probe+0x146/0x180\n  [\u003cffffffff8065d23c\u003e] platform_probe+0x3c/0x7a\n\nObserved on EIC7700 hardware (with the driver backported to a 6.17\ntree); whether the bug triggers depends entirely on what the stack\nhappens to contain when the registration helpers run.\n\nZero-initialize both structures.",
  "id": "CVE-2026-93263",
  "modified": "2026-09-26T03:30:39.851950560Z",
  "published": "2026-09-24T15:52:02.877Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/011d8de504bc84402aabc1dda1cf0552fe9a5af2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1183dc2450a268a536a15da8b106ec520cdbd19f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93263.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93263"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "clk: eswin: Zero-initialize stack-allocated clk_init_data"
}