Skip to content
Heist/ feed
Unrated

memstick: rtsx_usb_ms: complete requests after eject instead of dropping them

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: memstick: rtsx_usb_ms: complete requests after eject instead of dropping them memstick_check() can pass its host->removing check just before rtsx_usb_ms_drv_remove() sets eject/removing. Its next request is then silently dropped: rtsx_usb_ms_request() skips schedule_work() once eject is set, and drv_remove's cancel_work_sync() can also cancel a queued handle_req before it picks the request up. Nobody completes card->mrq_complete. Once memstick core waits for requests without a timeout ("memstick: core: wait for request completion before freeing card"), this hangs removal: memstick_check() never returns and memstick_remove_host() blocks in flush_workqueue(): INFO: task kworker/u10:3:65 blocked for more than 20 seconds. Workqueue: kmemstick memstick_check __wait_for_common memstick_check INFO: task kworker/1:1:33 blocked for more than 20 seconds. Workqueue: usb_hub_wq hub_event __flush_workqueue memstick_remove_host rtsx_usb_ms_drv_remove Never drop a request. rtsx_usb_ms_request() always schedules handle_req, and handle_req fails requests with -ENOMEDIUM once eject is set, without touching the device. drv_remove flushes handle_req instead of cancelling it, and cancels it only after memstick_remove_host(), when no new request can arrive, so it cannot run on a freed host. The host_mutex drain in drv_remove is removed: handle_req always leaves host->req NULL when it finishes, so the drain never had anything to do

Announced Source revision 1
Original source ↗

CVE-2026-99038

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-99038

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40",
        "lessThan": "f2c181e1d58e911804e14543b2f1cc6b23a0d4d6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40",
        "lessThan": "5b599e28aeb3684772aef64f46cc6f25f4c67128",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40",
        "lessThan": "d7e811c3a49cd5cff529c157df886719e09370ec",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40",
        "lessThan": "5616da0f92339328fa1472876df51555e15ad340",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40",
        "lessThan": "c96ca94425b076dc398d929366e378d1e22ec794",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/memstick/host/rtsx_usb_ms.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.16"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.16",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.6.160",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.113",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.57",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.11",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/memstick/host/rtsx_usb_ms.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-99038

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#52872 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement