{
  "cveId": "CVE-2026-63797",
  "url": "https://patchblox.com/security/cve/CVE-2026-63797",
  "summary": "CVE-2026-63797 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-63797, 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:  rpmsg: char: Fix use-after-free on probe error p...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  rpmsg: char: Fix use-after-free on probe error path  rpmsg_chrdev_probe() stores the newly allocated eptdev in the default endpoint\u0027s priv pointer before calling rpmsg_chrdev_eptdev_add(). If rpmsg_chrdev_eptdev_add() then fails, its error path frees eptdev while the default endpoint may still dispatch callbacks with the stale priv pointer.  Avoid publishing eptdev through the default endpoint until rpmsg_chrdev_eptdev_add() succeeds. Messages received before the priv pointer is published should be ignored by rpmsg_ept_cb(). Flow-control updates can hit rpmsg_ept_flow_cb() in the same window, so make both callbacks return success when priv is NULL.",
  "published": "2026-07-19T12:16:52Z",
  "severity": "high",
  "cvss": 8.4,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00146,
  "epssPercentile": 0.03836,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.180-1",
      "fix": "DEBIAN-CVE-2026-63797",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-63797",
      "released": "2026-07-20T12:58:36Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.95-1",
      "fix": "DEBIAN-CVE-2026-63797",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-63797",
      "released": "2026-07-20T12:58:36Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.3-1",
      "fix": "DEBIAN-CVE-2026-63797",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-63797",
      "released": "2026-07-20T12:58:36Z"
    }
  ],
  "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"
  }
}