{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b38f99c1217ae04753340f0fdcd8f35bf56841dc"
            },
            {
              "fixed": "fb4ba2bdfc1de8866e7c8e00df99f4b03ff42f09"
            },
            {
              "fixed": "db97f3763727d652112ae70038d4e17b3ce277bb"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.0.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90164.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: abort initialization when proc setup fails\n\nksmbd_server_init() calls ksmbd_proc_init() before creating the\nremaining proc entries and server subsystems. ksmbd_proc_init() tears\ndown partial state on a procfs or percpu_counter allocation failure,\nbut returns void, so ksmbd_server_init() continues as if the counters\nwere usable.\n\nOnce userspace starts the server, server_ctrl_handle_init() calls\nksmbd_proc_reset(), which reaches percpu_counter_set() with a NULL\nper-CPU counters pointer on SMP systems. The later ksmbd_proc_create()\ncalls also receive a NULL parent and may create entries in the /proc\nroot; ksmbd_proc_cleanup() cannot remove those entries because\nksmbd_proc_fs is NULL.",
  "id": "CVE-2026-90164",
  "modified": "2026-09-18T03:31:05.571372910Z",
  "published": "2026-09-17T16:06:54.504Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db97f3763727d652112ae70038d4e17b3ce277bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb4ba2bdfc1de8866e7c8e00df99f4b03ff42f09"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90164.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90164"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "smb/server: abort initialization when proc setup fails"
}