{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47283","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-05-21T13:27:52.129Z","datePublished":"2024-05-21T14:20:08.828Z","dateUpdated":"2025-12-18T11:36:29.086Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-12-18T11:36:29.086Z"},"descriptions":[{"lang":"en","value":"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":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/sfc/nic.c"],"versions":[{"version":"e6a43910d55d09dae65772ad571d4c61e459b17a","lessThan":"8d717c9135a3340ae62d1699484850bfb4112b0c","status":"affected","versionType":"git"},{"version":"e6a43910d55d09dae65772ad571d4c61e459b17a","lessThan":"81c4d1d83f88e15b26f4522a35cba6ffd8c5dfdd","status":"affected","versionType":"git"},{"version":"e6a43910d55d09dae65772ad571d4c61e459b17a","lessThan":"8f03eeb6e0a0a0b8d617ee0a4bce729e47130036","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/sfc/nic.c"],"versions":[{"version":"5.9","status":"affected"},{"version":"0","lessThan":"5.9","status":"unaffected","versionType":"semver"},{"version":"5.10.44","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.12.11","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.10.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.12.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/8d717c9135a3340ae62d1699484850bfb4112b0c"},{"url":"https://git.kernel.org/stable/c/81c4d1d83f88e15b26f4522a35cba6ffd8c5dfdd"},{"url":"https://git.kernel.org/stable/c/8f03eeb6e0a0a0b8d617ee0a4bce729e47130036"}],"title":"net:sfc: fix non-freed irq in legacy irq mode","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-06-12T15:24:21.338589Z","id":"CVE-2021-47283","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-12T15:24:30.338Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:32:08.013Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/8d717c9135a3340ae62d1699484850bfb4112b0c","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/81c4d1d83f88e15b26f4522a35cba6ffd8c5dfdd","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/8f03eeb6e0a0a0b8d617ee0a4bce729e47130036","tags":["x_transferred"]}]}]}}