{
  "cveId": "CVE-2021-47283",
  "url": "https://patchblox.com/security/cve/CVE-2021-47283",
  "summary": "CVE-2021-47283 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47283, released May 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net:sfc: fix non-freed irq in legacy irq mode  S...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net:sfc: fix non-freed irq in legacy irq mode  SFC driver can be configured via modparam to work using MSI-X, MSI or legacy IRQ interrupts. In the last one, the interrupt was not properly released on module remove.  It was not freed because the flag irqs_hooked was not set during initialization in the case of using legacy IRQ.  Example of (trimmed) trace during module remove without this fix:  remove_proc_entry: removing non-empty directory \u0027irq/125\u0027, leaking at least \u00270000:3b:00.1\u0027 WARNING: CPU: 39 PID: 3658 at fs/proc/generic.c:715 remove_proc_entry\u002B0x15c/0x170 ...trimmed... Call Trace:  unregister_irq_proc\u002B0xe3/0x100  free_desc\u002B0x29/0x70  irq_free_descs\u002B0x47/0x70  mp_unmap_irq\u002B0x58/0x60  acpi_unregister_gsi_ioapic\u002B0x2a/0x40  acpi_pci_irq_disable\u002B0x78/0xb0  pci_disable_device\u002B0xd1/0x100  efx_pci_remove\u002B0xa1/0x1e0 [sfc]  pci_device_remove\u002B0x38/0xa0  __device_release_driver\u002B0x177/0x230  driver_detach\u002B0xcb/0x110  bus_remove_driver\u002B0x58/0xd0  pci_unregister_driver\u002B0x2a/0xb0  efx_exit_module\u002B0x24/0xf40 [sfc]  __do_sys_delete_module.constprop.0\u002B0x171/0x280  ? exit_to_user_mode_prepare\u002B0x83/0x1d0  do_syscall_64\u002B0x3d/0x80  entry_SYSCALL_64_after_hwframe\u002B0x44/0xae RIP: 0033:0x7f9f9385800b ...trimmed...",
  "published": "2024-05-21T15:15:16Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00222,
  "epssPercentile": 0.12862,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.10.46-1",
      "fix": "DEBIAN-CVE-2021-47283",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47283",
      "released": "2024-05-21T15:15:16Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.10.46-1",
      "fix": "DEBIAN-CVE-2021-47283",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47283",
      "released": "2024-05-21T15:15:16Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.10.46-1",
      "fix": "DEBIAN-CVE-2021-47283",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47283",
      "released": "2024-05-21T15:15:16Z"
    }
  ],
  "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"
  }
}