{
  "cveId": "CVE-2021-47564",
  "url": "https://patchblox.com/security/cve/CVE-2021-47564",
  "summary": "CVE-2021-47564 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47564, released May 24, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net: marvell: prestera: fix double free issue on...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: marvell: prestera: fix double free issue on err path  fix error path handling in prestera_bridge_port_join() that cases prestera driver to crash (see below).   Trace:    Internal error: Oops: 96000044 [#1] SMP    Modules linked in: prestera_pci prestera uio_pdrv_genirq    CPU: 1 PID: 881 Comm: ip Not tainted 5.15.0 #1    pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)    pc : prestera_bridge_destroy\u002B0x2c/0xb0 [prestera]    lr : prestera_bridge_port_join\u002B0x2cc/0x350 [prestera]    sp : ffff800011a1b0f0    ...    x2 : ffff000109ca6c80 x1 : dead000000000100 x0 : dead000000000122     Call trace:    prestera_bridge_destroy\u002B0x2c/0xb0 [prestera]    prestera_bridge_port_join\u002B0x2cc/0x350 [prestera]    prestera_netdev_port_event.constprop.0\u002B0x3c4/0x450 [prestera]    prestera_netdev_event_handler\u002B0xf4/0x110 [prestera]    raw_notifier_call_chain\u002B0x54/0x80    call_netdevice_notifiers_info\u002B0x54/0xa0    __netdev_upper_dev_link\u002B0x19c/0x380",
  "published": "2024-05-24T15:15:21Z",
  "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": 0.00215,
  "epssPercentile": 0.11984,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.15.15-1",
      "fix": "DEBIAN-CVE-2021-47564",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47564",
      "released": "2024-05-24T15:15:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.15.15-1",
      "fix": "DEBIAN-CVE-2021-47564",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47564",
      "released": "2024-05-24T15:15:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.15.15-1",
      "fix": "DEBIAN-CVE-2021-47564",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47564",
      "released": "2024-05-24T15:15:21Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}