{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40"
            },
            {
              "fixed": "c48245ef696e590e92cbfb622625642bec8dbbad"
            },
            {
              "fixed": "602a00d75d2ab079c9ab7c0d7b56ae436e604148"
            },
            {
              "fixed": "8e4eda6e1b00624820fea1d35508d7422330ee25"
            },
            {
              "fixed": "f2c181e1d58e911804e14543b2f1cc6b23a0d4d6"
            },
            {
              "fixed": "5b599e28aeb3684772aef64f46cc6f25f4c67128"
            },
            {
              "fixed": "d7e811c3a49cd5cff529c157df886719e09370ec"
            },
            {
              "fixed": "5616da0f92339328fa1472876df51555e15ad340"
            },
            {
              "fixed": "c96ca94425b076dc398d929366e378d1e22ec794"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.16.0"
            },
            {
              "fixed": "5.10.273"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.224"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.191"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.160"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.57"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99038.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmemstick: rtsx_usb_ms: complete requests after eject instead of dropping them\n\nmemstick_check() can pass its host-\u003eremoving check just before\nrtsx_usb_ms_drv_remove() sets eject/removing. Its next request is then\nsilently dropped: rtsx_usb_ms_request() skips schedule_work() once eject\nis set, and drv_remove's cancel_work_sync() can also cancel a queued\nhandle_req before it picks the request up. Nobody completes\ncard-\u003emrq_complete.\n\nOnce memstick core waits for requests without a timeout (\"memstick: core:\nwait for request completion before freeing card\"), this hangs removal:\nmemstick_check() never returns and memstick_remove_host() blocks in\nflush_workqueue():\n\n  INFO: task kworker/u10:3:65 blocked for more than 20 seconds.\n  Workqueue: kmemstick memstick_check\n   __wait_for_common\n   memstick_check\n\n  INFO: task kworker/1:1:33 blocked for more than 20 seconds.\n  Workqueue: usb_hub_wq hub_event\n   __flush_workqueue\n   memstick_remove_host\n   rtsx_usb_ms_drv_remove\n\nNever drop a request. rtsx_usb_ms_request() always schedules handle_req,\nand handle_req fails requests with -ENOMEDIUM once eject is set, without\ntouching the device. drv_remove flushes handle_req instead of cancelling\nit, and cancels it only after memstick_remove_host(), when no new\nrequest can arrive, so it cannot run on a freed host.\n\nThe host_mutex drain in drv_remove is removed: handle_req always leaves\nhost-\u003ereq NULL when it finishes, so the drain never had anything to do,\nand it would now race with handle_req.",
  "id": "CVE-2026-99038",
  "modified": "2026-11-01T02:30:40.777420832Z",
  "published": "2026-10-23T12:21:56.333Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5616da0f92339328fa1472876df51555e15ad340"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5b599e28aeb3684772aef64f46cc6f25f4c67128"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/602a00d75d2ab079c9ab7c0d7b56ae436e604148"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e4eda6e1b00624820fea1d35508d7422330ee25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c48245ef696e590e92cbfb622625642bec8dbbad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c96ca94425b076dc398d929366e378d1e22ec794"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7e811c3a49cd5cff529c157df886719e09370ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2c181e1d58e911804e14543b2f1cc6b23a0d4d6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99038.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99038"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "memstick: rtsx_usb_ms: complete requests after eject instead of dropping them"
}