{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2021-47283",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47283",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-21T14:20:08.828Z",
    "updatedAt": "2026-05-11T13:51:30.780Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "net:sfc: fix non-freed irq in legacy irq mode",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet:sfc: fix non-freed irq in legacy irq mode\n\nSFC driver can be configured via modparam to work using MSI-X, MSI or\nlegacy IRQ interrupts. In the last one, the interrupt was not properly\nreleased on module remove.\n\nIt was not freed because the flag irqs_hooked was not set during\ninitialization in the case of using legacy IRQ.\n\nExample of (trimmed) trace during module remove without this fix:\n\nremove_proc_entry: removing non-empty directory 'irq/125', leaking at least '0000:3b:00.1'\nWARNING: CPU: 39 PID: 3658 at fs/proc/generic.c:715 remove_proc_entry+0x15c/0x170\n...trimmed...\nCall Trace:\n unregister_irq_proc+0xe3/0x100\n free_desc+0x29/0x70\n irq_free_descs+0x47/0x70\n mp_unmap_irq+0x58/0x60\n acpi_unregister_gsi_ioapic+0x2a/0x40\n acpi_pci_irq_disable+0x78/0xb0\n pci_disable_device+0xd1/0x100\n efx_pci_remove+0xa1/0x1e0 [sfc]\n pci_device_remove+0x38/0xa0\n __device_release_driver+0x177/0x230\n driver_detach+0xcb/0x110\n bus_remove_driver+0x58/0xd0\n pci_unregister_driver+0x2a/0xb0\n efx_exit_module+0x24/0xf40 [sfc]\n __do_sys_delete_module.constprop.0+0x171/0x280\n ? exit_to_user_mode_prepare+0x83/0x1d0\n do_syscall_64+0x3d/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7f9f9385800b\n...trimmed...",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "e6a43910d55d09dae65772ad571d4c61e459b17a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8d717c9135a3340ae62d1699484850bfb4112b0c"
            },
            {
              "version": "e6a43910d55d09dae65772ad571d4c61e459b17a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "81c4d1d83f88e15b26f4522a35cba6ffd8c5dfdd"
            },
            {
              "version": "e6a43910d55d09dae65772ad571d4c61e459b17a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8f03eeb6e0a0a0b8d617ee0a4bce729e47130036"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.9"
            },
            {
              "version": "5.10.44",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.12.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.12.*"
            },
            {
              "version": "5.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}