CVE-2021-47424

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47424", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:58:30.827Z", "datePublished": "2024-05-21T15:04:11.271Z", "dateUpdated": "2026-05-11T13:54:26.099Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:54:26.099Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix freeing of uninitialized misc IRQ vector\n\nWhen VSI set up failed in i40e_probe() as part of PF switch set up\ndriver was trying to free misc IRQ vectors in\ni40e_clear_interrupt_scheme and produced a kernel Oops:\n\n Trying to free already-free IRQ 266\n WARNING: CPU: 0 PID: 5 at kernel/irq/manage.c:1731 __free_irq+0x9a/0x300\n Workqueue: events work_for_cpu_fn\n RIP: 0010:__free_irq+0x9a/0x300\n Call Trace:\n ? synchronize_irq+0x3a/0xa0\n free_irq+0x2e/0x60\n i40e_clear_interrupt_scheme+0x53/0x190 [i40e]\n i40e_probe.part.108+0x134b/0x1a40 [i40e]\n ? kmem_cache_alloc+0x158/0x1c0\n ? acpi_ut_update_ref_count.part.1+0x8e/0x345\n ? acpi_ut_update_object_reference+0x15e/0x1e2\n ? strstr+0x21/0x70\n ? irq_get_irq_data+0xa/0x20\n ? mp_check_pin_attr+0x13/0xc0\n ? irq_get_irq_data+0xa/0x20\n ? mp_map_pin_to_irq+0xd3/0x2f0\n ? acpi_register_gsi_ioapic+0x93/0x170\n ? pci_conf1_read+0xa4/0x100\n ? pci_bus_read_config_word+0x49/0x70\n ? do_pci_enable_device+0xcc/0x100\n local_pci_probe+0x41/0x90\n work_for_cpu_fn+0x16/0x20\n process_one_work+0x1a7/0x360\n worker_thread+0x1cf/0x390\n ? create_worker+0x1a0/0x1a0\n kthread+0x112/0x130\n ? kthread_flush_work_fn+0x10/0x10\n ret_from_fork+0x1f/0x40\n\nThe problem is that at that point misc IRQ vectors\nwere not allocated yet and we get a call trace\nthat driver is trying to free already free IRQ vectors.\n\nAdd a check in i40e_clear_interrupt_scheme for __I40E_MISC_IRQ_REQUESTED\nPF state before calling i40e_free_misc_vector. This state is set only if\nmisc IRQ vectors were properly initialized."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/intel/i40e/i40e_main.c"], "versions": [{"version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "lessThan": "60ad4cde0ad28921f9ea25b0201c774b95ffa4b4", "status": "affected", "versionType": "git"}, {"version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "lessThan": "17063cac4088b8e2fc0f633abddca5426ed58312", "status": "affected", "versionType": "git"}, {"version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "lessThan": "97aeed72af4f83ae51534f0a2473ff52f8d66236", "status": "affected", "versionType": "git"}, {"version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "lessThan": "75099439209d3cda439a1d9b00d19a50f0066fef", "status": "affected", "versionType": "git"}, {"version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "lessThan": "2e5a20573a926302b233b0c2e1077f5debc7ab2e", "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/intel/i40e/i40e_main.c"], "versions": [{"version": "4.15", "status": "affected"}, {"version": "0", "lessThan": "4.15", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.211", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.153", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.73", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.14.12", "lessThanOrEqual": "5.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15", "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": "4.15", "versionEndExcluding": "4.19.211"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.4.153"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.10.73"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.14.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.15"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/60ad4cde0ad28921f9ea25b0201c774b95ffa4b4"}, {"url": "https://git.kernel.org/stable/c/17063cac4088b8e2fc0f633abddca5426ed58312"}, {"url": "https://git.kernel.org/stable/c/97aeed72af4f83ae51534f0a2473ff52f8d66236"}, {"url": "https://git.kernel.org/stable/c/75099439209d3cda439a1d9b00d19a50f0066fef"}, {"url": "https://git.kernel.org/stable/c/2e5a20573a926302b233b0c2e1077f5debc7ab2e"}], "title": "i40e: Fix freeing of uninitialized misc IRQ vector", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-06-11T17:26:01.019314Z", "id": "CVE-2021-47424", "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": "2024-06-11T17:26:22.350Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.004Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/60ad4cde0ad28921f9ea25b0201c774b95ffa4b4", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/17063cac4088b8e2fc0f633abddca5426ed58312", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/97aeed72af4f83ae51534f0a2473ff52f8d66236", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/75099439209d3cda439a1d9b00d19a50f0066fef", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/2e5a20573a926302b233b0c2e1077f5debc7ab2e", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/60ad4cde0ad28921f9ea25b0201c774b95ffa4b4", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/17063cac4088b8e2fc0f633abddca5426ed58312", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/97aeed72af4f83ae51534f0a2473ff52f8d66236", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/75099439209d3cda439a1d9b00d19a50f0066fef", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/2e5a20573a926302b233b0c2e1077f5debc7ab2e", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.004Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47424", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-06-11T17:26:01.019314Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-11T17:26:09.276Z"}}], "cna": {"title": "i40e: Fix freeing of uninitialized misc IRQ vector", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "lessThan": "60ad4cde0ad28921f9ea25b0201c774b95ffa4b4", "versionType": "git"}, {"status": "affected", "version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "lessThan": "17063cac4088b8e2fc0f633abddca5426ed58312", "versionType": "git"}, {"status": "affected", "version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "lessThan": "97aeed72af4f83ae51534f0a2473ff52f8d66236", "versionType": "git"}, {"status": "affected", "version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "lessThan": "75099439209d3cda439a1d9b00d19a50f0066fef", "versionType": "git"}, {"status": "affected", "version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "lessThan": "2e5a20573a926302b233b0c2e1077f5debc7ab2e", "versionType": "git"}], "programFiles": ["drivers/net/ethernet/intel/i40e/i40e_main.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.15"}, {"status": "unaffected", "version": "0", "lessThan": "4.15", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.211", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.153", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.73", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.14.12", "versionType": "semver", "lessThanOrEqual": "5.14.*"}, {"status": "unaffected", "version": "5.15", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/intel/i40e/i40e_main.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/60ad4cde0ad28921f9ea25b0201c774b95ffa4b4"}, {"url": "https://git.kernel.org/stable/c/17063cac4088b8e2fc0f633abddca5426ed58312"}, {"url": "https://git.kernel.org/stable/c/97aeed72af4f83ae51534f0a2473ff52f8d66236"}, {"url": "https://git.kernel.org/stable/c/75099439209d3cda439a1d9b00d19a50f0066fef"}, {"url": "https://git.kernel.org/stable/c/2e5a20573a926302b233b0c2e1077f5debc7ab2e"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix freeing of uninitialized misc IRQ vector\n\nWhen VSI set up failed in i40e_probe() as part of PF switch set up\ndriver was trying to free misc IRQ vectors in\ni40e_clear_interrupt_scheme and produced a kernel Oops:\n\n Trying to free already-free IRQ 266\n WARNING: CPU: 0 PID: 5 at kernel/irq/manage.c:1731 __free_irq+0x9a/0x300\n Workqueue: events work_for_cpu_fn\n RIP: 0010:__free_irq+0x9a/0x300\n Call Trace:\n ? synchronize_irq+0x3a/0xa0\n free_irq+0x2e/0x60\n i40e_clear_interrupt_scheme+0x53/0x190 [i40e]\n i40e_probe.part.108+0x134b/0x1a40 [i40e]\n ? kmem_cache_alloc+0x158/0x1c0\n ? acpi_ut_update_ref_count.part.1+0x8e/0x345\n ? acpi_ut_update_object_reference+0x15e/0x1e2\n ? strstr+0x21/0x70\n ? irq_get_irq_data+0xa/0x20\n ? mp_check_pin_attr+0x13/0xc0\n ? irq_get_irq_data+0xa/0x20\n ? mp_map_pin_to_irq+0xd3/0x2f0\n ? acpi_register_gsi_ioapic+0x93/0x170\n ? pci_conf1_read+0xa4/0x100\n ? pci_bus_read_config_word+0x49/0x70\n ? do_pci_enable_device+0xcc/0x100\n local_pci_probe+0x41/0x90\n work_for_cpu_fn+0x16/0x20\n process_one_work+0x1a7/0x360\n worker_thread+0x1cf/0x390\n ? create_worker+0x1a0/0x1a0\n kthread+0x112/0x130\n ? kthread_flush_work_fn+0x10/0x10\n ret_from_fork+0x1f/0x40\n\nThe problem is that at that point misc IRQ vectors\nwere not allocated yet and we get a call trace\nthat driver is trying to free already free IRQ vectors.\n\nAdd a check in i40e_clear_interrupt_scheme for __I40E_MISC_IRQ_REQUESTED\nPF state before calling i40e_free_misc_vector. This state is set only if\nmisc IRQ vectors were properly initialized."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.211", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.153", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.73", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.14.12", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15", "versionStartIncluding": "4.15"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:54:26.099Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47424", "state": "PUBLISHED", "dateUpdated": "2026-05-11T13:54:26.099Z", "dateReserved": "2024-05-21T14:58:30.827Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T15:04:11.271Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/intel/i40e/i40e_main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "60ad4cde0ad28921f9ea25b0201c774b95ffa4b4", "status": "affected", "version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "versionType": "git"}, {"lessThan": "17063cac4088b8e2fc0f633abddca5426ed58312", "status": "affected", "version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "versionType": "git"}, {"lessThan": "97aeed72af4f83ae51534f0a2473ff52f8d66236", "status": "affected", "version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "versionType": "git"}, {"lessThan": "75099439209d3cda439a1d9b00d19a50f0066fef", "status": "affected", "version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "versionType": "git"}, {"lessThan": "2e5a20573a926302b233b0c2e1077f5debc7ab2e", "status": "affected", "version": "c17401a1dd210a5f22ab1ec7c7366037c158a14c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/intel/i40e/i40e_main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.15"}, {"lessThan": "4.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.211", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.153", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.73", "versionType": "semver"}, {"lessThanOrEqual": "5.14.*", "status": "unaffected", "version": "5.14.12", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.15", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "19F2BDAE-0E29-4C98-A02A-4DA148685995", "versionEndExcluding": "4.19.211", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "99815E71-6131-41A5-B309-1917CBBDF09C", "versionEndExcluding": "5.4.153", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "83DBC258-8513-4ECB-A55E-57E743405733", "versionEndExcluding": "5.10.73", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "20EB962C-32DC-448F-A900-BCF9A726F9EB", "versionEndExcluding": "5.14.12", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*", "matchCriteriaId": "E46C74C6-B76B-4C94-A6A4-FD2FFF62D644", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*", "matchCriteriaId": "60134C3A-06E4-48C1-B04F-2903732A4E56", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*", "matchCriteriaId": "0460DA88-8FE1-46A2-9DDA-1F1ABA552E71", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*", "matchCriteriaId": "AF55383D-4DF2-45DC-93F7-571F4F978EAB", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix freeing of uninitialized misc IRQ vector\n\nWhen VSI set up failed in i40e_probe() as part of PF switch set up\ndriver was trying to free misc IRQ vectors in\ni40e_clear_interrupt_scheme and produced a kernel Oops:\n\n Trying to free already-free IRQ 266\n WARNING: CPU: 0 PID: 5 at kernel/irq/manage.c:1731 __free_irq+0x9a/0x300\n Workqueue: events work_for_cpu_fn\n RIP: 0010:__free_irq+0x9a/0x300\n Call Trace:\n ? synchronize_irq+0x3a/0xa0\n free_irq+0x2e/0x60\n i40e_clear_interrupt_scheme+0x53/0x190 [i40e]\n i40e_probe.part.108+0x134b/0x1a40 [i40e]\n ? kmem_cache_alloc+0x158/0x1c0\n ? acpi_ut_update_ref_count.part.1+0x8e/0x345\n ? acpi_ut_update_object_reference+0x15e/0x1e2\n ? strstr+0x21/0x70\n ? irq_get_irq_data+0xa/0x20\n ? mp_check_pin_attr+0x13/0xc0\n ? irq_get_irq_data+0xa/0x20\n ? mp_map_pin_to_irq+0xd3/0x2f0\n ? acpi_register_gsi_ioapic+0x93/0x170\n ? pci_conf1_read+0xa4/0x100\n ? pci_bus_read_config_word+0x49/0x70\n ? do_pci_enable_device+0xcc/0x100\n local_pci_probe+0x41/0x90\n work_for_cpu_fn+0x16/0x20\n process_one_work+0x1a7/0x360\n worker_thread+0x1cf/0x390\n ? create_worker+0x1a0/0x1a0\n kthread+0x112/0x130\n ? kthread_flush_work_fn+0x10/0x10\n ret_from_fork+0x1f/0x40\n\nThe problem is that at that point misc IRQ vectors\nwere not allocated yet and we get a call trace\nthat driver is trying to free already free IRQ vectors.\n\nAdd a check in i40e_clear_interrupt_scheme for __I40E_MISC_IRQ_REQUESTED\nPF state before calling i40e_free_misc_vector. This state is set only if\nmisc IRQ vectors were properly initialized."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: i40e: Se corrigi\u00f3 la liberaci\u00f3n de un vector IRQ miscel\u00e1neo no inicializado. Cuando la configuraci\u00f3n de VSI fall\u00f3 en i40e_probe() como parte de la configuraci\u00f3n del conmutador PF, el controlador intentaba liberar vectores IRQ miscel\u00e1neos en i40e_clear_interrupt_scheme y produjo un kernel Oops: Intentando liberar IRQ 266 que ya est\u00e1 libre ADVERTENCIA: CPU: 0 PID: 5 en kernel/irq/manage.c:1731 __free_irq+0x9a/0x300 Cola de trabajo: eventos work_for_cpu_fn RIP: 0010:__free_irq+0x9a/0x300 Seguimiento de llamadas: ? synchronize_irq+0x3a/0xa0 free_irq+0x2e/0x60 i40e_clear_interrupt_scheme+0x53/0x190 [i40e] i40e_probe.part.108+0x134b/0x1a40 [i40e] ? kmem_cache_alloc+0x158/0x1c0? acpi_ut_update_ref_count.part.1+0x8e/0x345? acpi_ut_update_object_reference+0x15e/0x1e2? chain+0x21/0x70 ? irq_get_irq_data+0xa/0x20 ? mp_check_pin_attr+0x13/0xc0? irq_get_irq_data+0xa/0x20 ? mp_map_pin_to_irq+0xd3/0x2f0? acpi_register_gsi_ioapic+0x93/0x170? pci_conf1_read+0xa4/0x100? pci_bus_read_config_word+0x49/0x70? do_pci_enable_device+0xcc/0x100 local_pci_probe+0x41/0x90 work_for_cpu_fn+0x16/0x20 Process_one_work+0x1a7/0x360 worker_thread+0x1cf/0x390 ? create_worker+0x1a0/0x1a0 kthread+0x112/0x130? kthread_flush_work_fn+0x10/0x10 ret_from_fork+0x1f/0x40 El problema es que en ese momento a\u00fan no se hab\u00edan asignado varios vectores IRQ y obtenemos un seguimiento de llamada de que el controlador est\u00e1 intentando liberar vectores IRQ que ya est\u00e1n libres. Agregue una verificaci\u00f3n en i40e_clear_interrupt_scheme para el estado __I40E_MISC_IRQ_REQUESTED PF antes de llamar a i40e_free_misc_vector. Este estado se establece solo si se inicializaron correctamente varios vectores IRQ."}], "id": "CVE-2021-47424", "lastModified": "2026-06-17T04:17:26.420", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47424", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-11T17:26:01.019314Z", "version": "2.0.3"}}]}, "published": "2024-05-21T15:15:27.830", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/17063cac4088b8e2fc0f633abddca5426ed58312"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e5a20573a926302b233b0c2e1077f5debc7ab2e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/60ad4cde0ad28921f9ea25b0201c774b95ffa4b4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/75099439209d3cda439a1d9b00d19a50f0066fef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/97aeed72af4f83ae51534f0a2473ff52f8d66236"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/17063cac4088b8e2fc0f633abddca5426ed58312"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e5a20573a926302b233b0c2e1077f5debc7ab2e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/60ad4cde0ad28921f9ea25b0201c774b95ffa4b4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/75099439209d3cda439a1d9b00d19a50f0066fef"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/97aeed72af4f83ae51534f0a2473ff52f8d66236"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: i40e: Fix freeing of uninitialized misc IRQ vector", "id": "2282308", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282308"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-665", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ni40e: Fix freeing of uninitialized misc IRQ vector\nWhen VSI set up failed in i40e_probe() as part of PF switch set up\ndriver was trying to free misc IRQ vectors in\ni40e_clear_interrupt_scheme and produced a kernel Oops:\nTrying to free already-free IRQ 266\nWARNING: CPU: 0 PID: 5 at kernel/irq/manage.c:1731 __free_irq+0x9a/0x300\nWorkqueue: events work_for_cpu_fn\nRIP: 0010:__free_irq+0x9a/0x300\nCall Trace:\n? synchronize_irq+0x3a/0xa0\nfree_irq+0x2e/0x60\ni40e_clear_interrupt_scheme+0x53/0x190 [i40e]\ni40e_probe.part.108+0x134b/0x1a40 [i40e]\n? kmem_cache_alloc+0x158/0x1c0\n? acpi_ut_update_ref_count.part.1+0x8e/0x345\n? acpi_ut_update_object_reference+0x15e/0x1e2\n? strstr+0x21/0x70\n? irq_get_irq_data+0xa/0x20\n? mp_check_pin_attr+0x13/0xc0\n? irq_get_irq_data+0xa/0x20\n? mp_map_pin_to_irq+0xd3/0x2f0\n? acpi_register_gsi_ioapic+0x93/0x170\n? pci_conf1_read+0xa4/0x100\n? pci_bus_read_config_word+0x49/0x70\n? do_pci_enable_device+0xcc/0x100\nlocal_pci_probe+0x41/0x90\nwork_for_cpu_fn+0x16/0x20\nprocess_one_work+0x1a7/0x360\nworker_thread+0x1cf/0x390\n? create_worker+0x1a0/0x1a0\nkthread+0x112/0x130\n? kthread_flush_work_fn+0x10/0x10\nret_from_fork+0x1f/0x40\nThe problem is that at that point misc IRQ vectors\nwere not allocated yet and we get a call trace\nthat driver is trying to free already free IRQ vectors.\nAdd a check in i40e_clear_interrupt_scheme for __I40E_MISC_IRQ_REQUESTED\nPF state before calling i40e_free_misc_vector. This state is set only if\nmisc IRQ vectors were properly initialized."], "name": "CVE-2021-47424", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47424\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47424\nhttps://lore.kernel.org/linux-cve-announce/2024052156-CVE-2021-47424-a4dc@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-13T11:21:51.204613+00:00", "updated": "2025-07-13T11:21:51.204664+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}