{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1a218d312e65ec396b2739056a8ea78493015f21"
            },
            {
              "fixed": "950d8e8375f3ff4787de51b7bdf8dd23a3ad6547"
            },
            {
              "fixed": "fdfb736282b9665c0169df0c4152ec91fdea2767"
            },
            {
              "fixed": "bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0"
            },
            {
              "fixed": "a75b84119e56fc34b0f1403f3b93d357a55dabb6"
            },
            {
              "fixed": "71ba8b6e28f7a83b724036f5de07e03bb5473286"
            },
            {
              "fixed": "d25dd08268aeaceb485189aaa84aa6d68a460291"
            },
            {
              "fixed": "c38cce70adef874c2a7b5132c14d6c221401deff"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "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-2026-93115.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL\n\nEvery platform driver can be forced to match a device that doesn't match\nits list of device IDs because of device_match_driver_override(), so\nplatform drivers that rely on the existence of a device's ACPI companion\nobject need to verify its presence.\n\nmlxbf_pmc_probe() passes the result of ACPI_COMPANION() to\nacpi_device_hid(), which dereferences it, so force-binding the driver to\na device without an ACPI companion leads to a NULL pointer dereference.\n\nAccordingly, add a requisite ACPI_COMPANION() check against NULL to the\nmlxbf-pmc driver and return -ENODEV when the companion is missing.",
  "id": "CVE-2026-93115",
  "modified": "2026-09-19T03:30:48.263777375Z",
  "published": "2026-09-17T16:11:23.145Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/71ba8b6e28f7a83b724036f5de07e03bb5473286"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/950d8e8375f3ff4787de51b7bdf8dd23a3ad6547"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a75b84119e56fc34b0f1403f3b93d357a55dabb6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c38cce70adef874c2a7b5132c14d6c221401deff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d25dd08268aeaceb485189aaa84aa6d68a460291"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fdfb736282b9665c0169df0c4152ec91fdea2767"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93115.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93115"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL"
}