{
  "cveId": "CVE-2026-63910",
  "url": "https://patchblox.com/security/cve/CVE-2026-63910",
  "summary": "CVE-2026-63910 is fixed in linux on 1 platform by DEBIAN-CVE-2026-63910 (version 7.0.12-1), released July 20, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  dma-buf: fix UAF in dma_buf_fd() tracepoint  Onc...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  dma-buf: fix UAF in dma_buf_fd() tracepoint  Once FD_ADD() returns, the fd is live in the file descriptor table and a thread sharing that table can close() it before DMA_BUF_TRACE() runs. The close drops the last reference, __fput() frees the dma_buf, and the tracepoint then dereferences dmabuf to take dmabuf-\u003Ename_lock -- slab-use-after-free.  Split FD_ADD() back into get_unused_fd_flags() \u002B fd_install() and emit the tracepoint between them. While the fdtable slot is reserved with a NULL file pointer, a racing close() returns -EBADF without entering __fput(), so the dma_buf stays alive across the trace. Same approach as commit 2d76319c4cbb (\u0022dma-buf: fix UAF in dma_buf_put() tracepoint\u0022).  This undoes the FD_ADD() conversion done in commit 34dfce523c90 (\u0022dma: convert dma_buf_fd() to FD_ADD()\u0022); FD_ADD() has no place to hook the tracepoint safely.",
  "published": "2026-07-19T16:17:08Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00165,
  "epssPercentile": 0.0577,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.12-1",
      "fix": "DEBIAN-CVE-2026-63910",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-63910",
      "released": "2026-07-20T12:58:36Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T20:03:11Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}