{
  "cveId": "CVE-2026-68222",
  "url": "https://patchblox.com/security/cve/CVE-2026-68222",
  "summary": "CVE-2026-68222 is fixed in 17 products on 1 platform, first by DEBIAN-CVE-2026-68222, released August 11, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "media: msi2500: Return queued buffers on start_streaming() failure",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  media: msi2500: Return queued buffers on start_streaming() failure  The vb2 framework hands buffers to the driver via buf_queue() before calling start_streaming().  If start_streaming() returns an error without first returning those buffers via vb2_buffer_done(), vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued buffers leak.  msi2500_start_streaming() had five error paths that all hit this trap and were further tangled by ret-overwriting between calls:    - -ENODEV when the USB device was already disconnected   - -ERESTARTSYS when mutex_lock_interruptible() was interrupted   - msi2500_set_usb_adc() failure: ret was silently overwritten by     the next call (msi2500_isoc_init), so the error was lost entirely   - msi2500_isoc_init() failure: cleanup_queued_bufs was called, but     the function then fell through to msi2500_ctrl_msg() and again     masked the original error by overwriting ret   - msi2500_ctrl_msg(CMD_START_STREAMING) failure: no cleanup at all,     leaving isoc URBs submitted with no way for the driver to consume     them  Consolidate the error paths into a small goto chain.  Every failure now stops the function, drains the queued-buffer list, and returns the real error code.  The ctrl_msg failure path also rolls back the preceding msi2500_isoc_init() via msi2500_isoc_cleanup() before unlocking and draining.  The cleanup helper takes a vb2_buffer_state argument so that the start_streaming error paths can pass VB2_BUF_STATE_QUEUED (as expected by userspace on start_streaming failure) while stop_streaming keeps its existing VB2_BUF_STATE_ERROR semantics.  This mirrors the uvcvideo fix in commit 4cf3b6fd54eb (\u0022media: uvcvideo: Return queued buffers on start_streaming() failure\u0022).",
  "published": "2026-08-10T13:20:10Z",
  "severity": "Moderate",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00139,
  "epssPercentile": 0.03264,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68222",
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  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
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    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
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}