{
  "cveId": "CVE-2025-71221",
  "url": "https://patchblox.com/security/cve/CVE-2025-71221",
  "summary": "CVE-2025-71221 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-71221, released February 14, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  dmaengine: mmp_pdma: Fix race condition in mmp_p...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  dmaengine: mmp_pdma: Fix race condition in mmp_pdma_residue()  Add proper locking in mmp_pdma_residue() to prevent use-after-free when accessing descriptor list and descriptor contents.  The race occurs when multiple threads call tx_status() while the tasklet on another CPU is freeing completed descriptors:  CPU 0                              CPU 1 -----                              ----- mmp_pdma_tx_status() mmp_pdma_residue()   -\u003E NO LOCK held      list_for_each_entry(sw, ..)                                    DMA interrupt                                    dma_do_tasklet()                                      -\u003E spin_lock(\u0026desc_lock)                                         list_move(sw-\u003Enode, ...)                                         spin_unlock(\u0026desc_lock)   |                                     dma_pool_free(sw) \u003C- FREED!   -\u003E access sw-\u003Edesc \u003C- UAF!  This issue can be reproduced when running dmatest on the same channel with multiple threads (threads_per_chan \u003E 1).  Fix by protecting the chain_running list iteration and descriptor access with the chan-\u003Edesc_lock spinlock.",
  "published": "2026-02-14T17:15:54Z",
  "severity": "high",
  "cvss": 7,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00116,
  "epssPercentile": 0.01583,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.170-1",
      "fix": "DEBIAN-CVE-2025-71221",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-71221",
      "released": "2026-02-14T17:15:54Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.85-1",
      "fix": "DEBIAN-CVE-2025-71221",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-71221",
      "released": "2026-02-14T17:15:54Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.18.10-1",
      "fix": "DEBIAN-CVE-2025-71221",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-71221",
      "released": "2026-02-14T17:15:54Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}