{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "42d020b54edc57d03749bed75976f1e962a9fbfa"
            },
            {
              "fixed": "2b25f11ec52ea0a82334d5b83ee321f6b0a35923"
            },
            {
              "fixed": "a1a5ad37e50ceb192c07ac7e2d7143638cd4d110"
            }
          ],
          "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": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98645.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: winwing: fix use-after-free in force feedback teardown\n\nwinwing_init_ff() passes the driver's private data, allocated with\ndevm_kzalloc() in winwing_probe(), as the effect context to\ninput_ff_create_memless(). The memoryless force-feedback core takes\nownership of that pointer and frees it with kfree() from\ninput_ff_destroy() (ml_ff_destroy()) when the input device is\ndestroyed.\n\nFreeing a devm-managed allocation with kfree() is an invalid free, and\nthe same object is then released again by devres when the HID device is\ntorn down, a double free. As the allocation also embeds the LED class\ndevices, their timers and work item live on freed memory and the slab\ngets corrupted. This triggers on unbind, rmmod, hot-unplug and on system\nsuspend, where the firmware cache walks the now-corrupt devres list.\nKASAN reports:\n\n  BUG: KASAN: invalid-free in input_ff_destroy\n  Allocated by task N:\n    winwing_probe\n\nPass NULL as the memless context instead and fetch the driver data from\nthe input device in winwing_play_effect(): the HID core already stores\nthe hid_device as the input device's drvdata. The force-feedback core\nthen owns nothing that it must not free.",
  "id": "CVE-2026-98645",
  "modified": "2026-10-20T02:30:39.577620364Z",
  "published": "2026-10-18T15:20:16.676Z",
  "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/2b25f11ec52ea0a82334d5b83ee321f6b0a35923"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a1a5ad37e50ceb192c07ac7e2d7143638cd4d110"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98645.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98645"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "HID: winwing: fix use-after-free in force feedback teardown"
}