{
  "cveId": "CVE-2026-74392",
  "url": "https://patchblox.com/security/cve/CVE-2026-74392",
  "summary": "CVE-2026-74392 is fixed in linux on 1 platform by DEBIAN-CVE-2026-74392 (version 7.1.5-1), released August 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  dm: limit target bio polling to one shot  dm_pol...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  dm: limit target bio polling to one shot  dm_poll_bio() is the -\u003Epoll_bio() callback for a stacked dm device. The caller only knows about the dm queue, so it may decide to do a spinning poll if it thinks a single queue is being polled. Passing those flags unchanged to the mapped clone lets blk_mq_poll() spin on a target queue from inside dm_poll_bio().  With io_uring IOPOLL on a dm-stripe target this can keep a task in    dm_poll_bio() -\u003E bio_poll() -\u003E blk_mq_poll()  long enough to trigger an RCU CPU stall, before io_uring gets back to io_iopoll_check() and its need_resched() check.  Keep dm\u0027s -\u003Epoll_bio() bounded by forcing one-shot polling for target bios. The caller can invoke dm_poll_bio() again if it wants to keep polling, and it also gets a chance to reap completions or reschedule between passes.",
  "published": "2026-08-15T06:22:41Z",
  "severity": "",
  "epss": 0.00198,
  "epssPercentile": 0.09562,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-74392",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-74392",
      "released": "2026-08-15T22:38:55Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T01:44:33Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}