CVE-2021-47271 (GCVE-0-2021-47271)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:20 – Updated: 2026-05-11 13:51
VLAI
Title
usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler Patch fixes the following critical issue caused by deadlock which has been detected during testing NCM class: smp: csd: Detected non-responsive CSD lock (#1) on CPU#0 smp: csd: CSD lock (#1) unresponsive. .... RIP: 0010:native_queued_spin_lock_slowpath+0x61/0x1d0 RSP: 0018:ffffbc494011cde0 EFLAGS: 00000002 RAX: 0000000000000101 RBX: ffff9ee8116b4a68 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9ee8116b4658 RBP: ffffbc494011cde0 R08: 0000000000000001 R09: 0000000000000000 R10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658 R13: ffff9ee8116b4670 R14: 0000000000000246 R15: ffff9ee8116b4658 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7bcc41a830 CR3: 000000007a612003 CR4: 00000000001706e0 Call Trace: <IRQ> do_raw_spin_lock+0xc0/0xd0 _raw_spin_lock_irqsave+0x95/0xa0 cdnsp_gadget_ep_queue.cold+0x88/0x107 [cdnsp_udc_pci] usb_ep_queue+0x35/0x110 eth_start_xmit+0x220/0x3d0 [u_ether] ncm_tx_timeout+0x34/0x40 [usb_f_ncm] ? ncm_free_inst+0x50/0x50 [usb_f_ncm] __hrtimer_run_queues+0xac/0x440 hrtimer_run_softirq+0x8c/0xb0 __do_softirq+0xcf/0x428 asm_call_irq_on_stack+0x12/0x20 </IRQ> do_softirq_own_stack+0x61/0x70 irq_exit_rcu+0xc1/0xd0 sysvec_apic_timer_interrupt+0x52/0xb0 asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:do_raw_spin_trylock+0x18/0x40 RSP: 0018:ffffbc494138bda8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff9ee8116b4658 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9ee8116b4658 RBP: ffffbc494138bda8 R08: 0000000000000001 R09: 0000000000000000 R10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658 R13: ffff9ee8116b4670 R14: ffff9ee7b5c73d80 R15: ffff9ee8116b4000 _raw_spin_lock+0x3d/0x70 ? cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci] cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci] ? cdnsp_remove_request+0x1f0/0x1f0 [cdnsp_udc_pci] ? cdnsp_thread_irq_handler+0x5/0xa0 [cdnsp_udc_pci] ? irq_thread+0xa0/0x1c0 irq_thread_fn+0x28/0x60 irq_thread+0x105/0x1c0 ? __kthread_parkme+0x42/0x90 ? irq_forced_thread_fn+0x90/0x90 ? wake_threads_waitq+0x30/0x30 ? irq_thread_check_affinity+0xe0/0xe0 kthread+0x12a/0x160 ? kthread_park+0x90/0x90 ret_from_fork+0x22/0x30 The root cause of issue is spin_lock/spin_unlock instruction instead spin_lock_irqsave/spin_lock_irqrestore in cdnsp_thread_irq_handler function.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3d82904559f4f5a2622db1b21de3edf2eded7664 , < ae746b6f4ce619cf4032fd798a232b010907a397 (git)
Affected: 3d82904559f4f5a2622db1b21de3edf2eded7664 , < a9aecef198faae3240921b707bc09b602e966fce (git)
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Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.12.11 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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{
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              "confidentialityImpact": "NONE",
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              "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"
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              "content": {
                "id": "CVE-2021-47271",
                "options": [
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                    "Exploitation": "none"
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                "role": "CISA Coordinator",
                "timestamp": "2024-05-29T18:57:26.202334Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        "title": "CISA ADP Vulnrichment"
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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler\n\nPatch fixes the following critical issue caused by deadlock which has been\ndetected during testing NCM class:\n\nsmp: csd: Detected non-responsive CSD lock (#1) on CPU#0\nsmp:     csd: CSD lock (#1) unresponsive.\n....\nRIP: 0010:native_queued_spin_lock_slowpath+0x61/0x1d0\nRSP: 0018:ffffbc494011cde0 EFLAGS: 00000002\nRAX: 0000000000000101 RBX: ffff9ee8116b4a68 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9ee8116b4658\nRBP: ffffbc494011cde0 R08: 0000000000000001 R09: 0000000000000000\nR10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658\nR13: ffff9ee8116b4670 R14: 0000000000000246 R15: ffff9ee8116b4658\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f7bcc41a830 CR3: 000000007a612003 CR4: 00000000001706e0\nCall Trace:\n \u003cIRQ\u003e\n do_raw_spin_lock+0xc0/0xd0\n _raw_spin_lock_irqsave+0x95/0xa0\n cdnsp_gadget_ep_queue.cold+0x88/0x107 [cdnsp_udc_pci]\n usb_ep_queue+0x35/0x110\n eth_start_xmit+0x220/0x3d0 [u_ether]\n ncm_tx_timeout+0x34/0x40 [usb_f_ncm]\n ? ncm_free_inst+0x50/0x50 [usb_f_ncm]\n __hrtimer_run_queues+0xac/0x440\n hrtimer_run_softirq+0x8c/0xb0\n __do_softirq+0xcf/0x428\n asm_call_irq_on_stack+0x12/0x20\n \u003c/IRQ\u003e\n do_softirq_own_stack+0x61/0x70\n irq_exit_rcu+0xc1/0xd0\n sysvec_apic_timer_interrupt+0x52/0xb0\n asm_sysvec_apic_timer_interrupt+0x12/0x20\nRIP: 0010:do_raw_spin_trylock+0x18/0x40\nRSP: 0018:ffffbc494138bda8 EFLAGS: 00000246\nRAX: 0000000000000000 RBX: ffff9ee8116b4658 RCX: 0000000000000000\nRDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9ee8116b4658\nRBP: ffffbc494138bda8 R08: 0000000000000001 R09: 0000000000000000\nR10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658\nR13: ffff9ee8116b4670 R14: ffff9ee7b5c73d80 R15: ffff9ee8116b4000\n _raw_spin_lock+0x3d/0x70\n ? cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci]\n cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci]\n ? cdnsp_remove_request+0x1f0/0x1f0 [cdnsp_udc_pci]\n ? cdnsp_thread_irq_handler+0x5/0xa0 [cdnsp_udc_pci]\n ? irq_thread+0xa0/0x1c0\n irq_thread_fn+0x28/0x60\n irq_thread+0x105/0x1c0\n ? __kthread_parkme+0x42/0x90\n ? irq_forced_thread_fn+0x90/0x90\n ? wake_threads_waitq+0x30/0x30\n ? irq_thread_check_affinity+0xe0/0xe0\n kthread+0x12a/0x160\n ? kthread_park+0x90/0x90\n ret_from_fork+0x22/0x30\n\nThe root cause of issue is spin_lock/spin_unlock instruction instead\nspin_lock_irqsave/spin_lock_irqrestore in cdnsp_thread_irq_handler\nfunction."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T13:51:16.818Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/ae746b6f4ce619cf4032fd798a232b010907a397"
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        {
          "url": "https://git.kernel.org/stable/c/a9aecef198faae3240921b707bc09b602e966fce"
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      ],
      "title": "usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47271",
    "datePublished": "2024-05-21T14:20:00.703Z",
    "dateReserved": "2024-05-21T13:27:52.127Z",
    "dateUpdated": "2026-05-11T13:51:16.818Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-47271",
      "date": "2026-07-16",
      "epss": "0.00147",
      "percentile": "0.04346"
    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nusb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler\\n\\nPatch fixes the following critical issue caused by deadlock which has been\\ndetected during testing NCM class:\\n\\nsmp: csd: Detected non-responsive CSD lock (#1) on CPU#0\\nsmp:     csd: CSD lock (#1) unresponsive.\\n....\\nRIP: 0010:native_queued_spin_lock_slowpath+0x61/0x1d0\\nRSP: 0018:ffffbc494011cde0 EFLAGS: 00000002\\nRAX: 0000000000000101 RBX: ffff9ee8116b4a68 RCX: 0000000000000000\\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9ee8116b4658\\nRBP: ffffbc494011cde0 R08: 0000000000000001 R09: 0000000000000000\\nR10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658\\nR13: ffff9ee8116b4670 R14: 0000000000000246 R15: ffff9ee8116b4658\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f7bcc41a830 CR3: 000000007a612003 CR4: 00000000001706e0\\nCall Trace:\\n \u003cIRQ\u003e\\n do_raw_spin_lock+0xc0/0xd0\\n _raw_spin_lock_irqsave+0x95/0xa0\\n cdnsp_gadget_ep_queue.cold+0x88/0x107 [cdnsp_udc_pci]\\n usb_ep_queue+0x35/0x110\\n eth_start_xmit+0x220/0x3d0 [u_ether]\\n ncm_tx_timeout+0x34/0x40 [usb_f_ncm]\\n ? ncm_free_inst+0x50/0x50 [usb_f_ncm]\\n __hrtimer_run_queues+0xac/0x440\\n hrtimer_run_softirq+0x8c/0xb0\\n __do_softirq+0xcf/0x428\\n asm_call_irq_on_stack+0x12/0x20\\n \u003c/IRQ\u003e\\n do_softirq_own_stack+0x61/0x70\\n irq_exit_rcu+0xc1/0xd0\\n sysvec_apic_timer_interrupt+0x52/0xb0\\n asm_sysvec_apic_timer_interrupt+0x12/0x20\\nRIP: 0010:do_raw_spin_trylock+0x18/0x40\\nRSP: 0018:ffffbc494138bda8 EFLAGS: 00000246\\nRAX: 0000000000000000 RBX: ffff9ee8116b4658 RCX: 0000000000000000\\nRDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9ee8116b4658\\nRBP: ffffbc494138bda8 R08: 0000000000000001 R09: 0000000000000000\\nR10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658\\nR13: ffff9ee8116b4670 R14: ffff9ee7b5c73d80 R15: ffff9ee8116b4000\\n _raw_spin_lock+0x3d/0x70\\n ? cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci]\\n cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci]\\n ? cdnsp_remove_request+0x1f0/0x1f0 [cdnsp_udc_pci]\\n ? cdnsp_thread_irq_handler+0x5/0xa0 [cdnsp_udc_pci]\\n ? irq_thread+0xa0/0x1c0\\n irq_thread_fn+0x28/0x60\\n irq_thread+0x105/0x1c0\\n ? __kthread_parkme+0x42/0x90\\n ? irq_forced_thread_fn+0x90/0x90\\n ? wake_threads_waitq+0x30/0x30\\n ? irq_thread_check_affinity+0xe0/0xe0\\n kthread+0x12a/0x160\\n ? kthread_park+0x90/0x90\\n ret_from_fork+0x22/0x30\\n\\nThe root cause of issue is spin_lock/spin_unlock instruction instead\\nspin_lock_irqsave/spin_lock_irqrestore in cdnsp_thread_irq_handler\\nfunction.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: cdnsp: soluciona el problema de interbloqueo en cdnsp_thread_irq_handler. El parche corrige el siguiente problema cr\\u00edtico causado por el interbloqueo que se detect\\u00f3 durante las pruebas Clase NCM: smp: csd: se detect\\u00f3 un bloqueo CSD que no responde ( #1) en CPU#0 smp: csd: el bloqueo CSD (#1) no responde. .... RIP: 0010:native_queued_spin_lock_slowpath+0x61/0x1d0 RSP: 0018:ffffbc494011cde0 EFLAGS: 00000002 RAX: 0000000000000101 RBX: ffff9ee8116b4a68 RCX: 0000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9ee8116b4658 RBP: ffffbc494011cde0 R08: 0000000000000001 R09: 00000000000000000 R 10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658 R13: ffff9ee8116b4670 R14: 00000000000000246 R15: ffff9ee8116b4658 CS: 0010 DS: 0 ES: 0000 CR0: 0000000080050033 CR2: 00007f7bcc41a830 CR3: 000000007a612003 CR4: 00000000001706e0 Seguimiento de llamadas:  do_raw_spin_lock+0xc0/0xd0 _raw_spin_lock_irqsave + 0x95/0xa0 cdnsp_gadget_ep_queue.cold+0x88/0x107 [cdnsp_udc_pci] usb_ep_queue+0x35/0x110 eth_start_xmit+0x220/0x3d0 [u_ether] ncm_tx_timeout+0x34/0x40 [usb_f_ncm] ? ncm_free_inst+0x50/0x50 [usb_f_ncm] __hrtimer_run_queues+0xac/0x440 hrtimer_run_softirq+0x8c/0xb0 __do_softirq+0xcf/0x428 asm_call_irq_on_stack+0x12/0x20  +0x61/0x70 irq_exit_rcu+0xc1/0xd0 sysvec_apic_timer_interrupt+0x52/0xb0 asm_sysvec_apic_timer_interrupt+0x12 /0x20 RIP: 0010:do_raw_spin_trylock+0x18/0x40 RSP: 0018:ffffbc494138bda8 EFLAGS: 00000246 RAX: 00000000000000000 RBX: ffff9ee8116b4658 RCX: 0000000000000 000 RDX: 0000000000000001 RSI: 00000000000000000 RDI: ffff9ee8116b4658 RBP: ffffbc494138bda8 R08: 00000000000000001 R09: 0000000000000000 R10: ffff9ee8116b4670 R11 : 0000000000000000 R12: ffff9ee8116b4658 R13: ffff9ee8116b4670 R14: ffff9ee7b5c73d80 R15: ffff9ee8116b4000 _raw_spin_lock+0x3d/0x70 ? cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci] cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci] ? cdnsp_remove_request+0x1f0/0x1f0 [cdnsp_udc_pci] ? cdnsp_thread_irq_handler+0x5/0xa0 [cdnsp_udc_pci] ? irq_thread+0xa0/0x1c0 irq_thread_fn+0x28/0x60 irq_thread+0x105/0x1c0 ? __kthread_parkme+0x42/0x90 ? irq_forced_thread_fn+0x90/0x90? wake_threads_waitq+0x30/0x30? irq_thread_check_affinity+0xe0/0xe0 kthread+0x12a/0x160 ? kthread_park+0x90/0x90 ret_from_fork+0x22/0x30 La causa principal del problema es la instrucci\\u00f3n spin_lock/spin_unlock en lugar de spin_lock_irqsave/spin_lock_irqrestore en la funci\\u00f3n cdnsp_thread_irq_handler.\"}]",
      "id": "CVE-2021-47271",
      "lastModified": "2024-11-21T06:35:46.113",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2024-05-21T15:15:15.610",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/a9aecef198faae3240921b707bc09b602e966fce\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/ae746b6f4ce619cf4032fd798a232b010907a397\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/a9aecef198faae3240921b707bc09b602e966fce\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/ae746b6f4ce619cf4032fd798a232b010907a397\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47271\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-21T15:15:15.610\",\"lastModified\":\"2026-06-17T04:17:04.120\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nusb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler\\n\\nPatch fixes the following critical issue caused by deadlock which has been\\ndetected during testing NCM class:\\n\\nsmp: csd: Detected non-responsive CSD lock (#1) on CPU#0\\nsmp:     csd: CSD lock (#1) unresponsive.\\n....\\nRIP: 0010:native_queued_spin_lock_slowpath+0x61/0x1d0\\nRSP: 0018:ffffbc494011cde0 EFLAGS: 00000002\\nRAX: 0000000000000101 RBX: ffff9ee8116b4a68 RCX: 0000000000000000\\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9ee8116b4658\\nRBP: ffffbc494011cde0 R08: 0000000000000001 R09: 0000000000000000\\nR10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658\\nR13: ffff9ee8116b4670 R14: 0000000000000246 R15: ffff9ee8116b4658\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f7bcc41a830 CR3: 000000007a612003 CR4: 00000000001706e0\\nCall Trace:\\n \u003cIRQ\u003e\\n do_raw_spin_lock+0xc0/0xd0\\n _raw_spin_lock_irqsave+0x95/0xa0\\n cdnsp_gadget_ep_queue.cold+0x88/0x107 [cdnsp_udc_pci]\\n usb_ep_queue+0x35/0x110\\n eth_start_xmit+0x220/0x3d0 [u_ether]\\n ncm_tx_timeout+0x34/0x40 [usb_f_ncm]\\n ? ncm_free_inst+0x50/0x50 [usb_f_ncm]\\n __hrtimer_run_queues+0xac/0x440\\n hrtimer_run_softirq+0x8c/0xb0\\n __do_softirq+0xcf/0x428\\n asm_call_irq_on_stack+0x12/0x20\\n \u003c/IRQ\u003e\\n do_softirq_own_stack+0x61/0x70\\n irq_exit_rcu+0xc1/0xd0\\n sysvec_apic_timer_interrupt+0x52/0xb0\\n asm_sysvec_apic_timer_interrupt+0x12/0x20\\nRIP: 0010:do_raw_spin_trylock+0x18/0x40\\nRSP: 0018:ffffbc494138bda8 EFLAGS: 00000246\\nRAX: 0000000000000000 RBX: ffff9ee8116b4658 RCX: 0000000000000000\\nRDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9ee8116b4658\\nRBP: ffffbc494138bda8 R08: 0000000000000001 R09: 0000000000000000\\nR10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658\\nR13: ffff9ee8116b4670 R14: ffff9ee7b5c73d80 R15: ffff9ee8116b4000\\n _raw_spin_lock+0x3d/0x70\\n ? cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci]\\n cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci]\\n ? cdnsp_remove_request+0x1f0/0x1f0 [cdnsp_udc_pci]\\n ? cdnsp_thread_irq_handler+0x5/0xa0 [cdnsp_udc_pci]\\n ? irq_thread+0xa0/0x1c0\\n irq_thread_fn+0x28/0x60\\n irq_thread+0x105/0x1c0\\n ? __kthread_parkme+0x42/0x90\\n ? irq_forced_thread_fn+0x90/0x90\\n ? wake_threads_waitq+0x30/0x30\\n ? irq_thread_check_affinity+0xe0/0xe0\\n kthread+0x12a/0x160\\n ? kthread_park+0x90/0x90\\n ret_from_fork+0x22/0x30\\n\\nThe root cause of issue is spin_lock/spin_unlock instruction instead\\nspin_lock_irqsave/spin_lock_irqrestore in cdnsp_thread_irq_handler\\nfunction.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: cdnsp: soluciona el problema de interbloqueo en cdnsp_thread_irq_handler. El parche corrige el siguiente problema cr\u00edtico causado por el interbloqueo que se detect\u00f3 durante las pruebas Clase NCM: smp: csd: se detect\u00f3 un bloqueo CSD que no responde ( #1) en CPU#0 smp: csd: el bloqueo CSD (#1) no responde. .... RIP: 0010:native_queued_spin_lock_slowpath+0x61/0x1d0 RSP: 0018:ffffbc494011cde0 EFLAGS: 00000002 RAX: 0000000000000101 RBX: ffff9ee8116b4a68 RCX: 0000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9ee8116b4658 RBP: ffffbc494011cde0 R08: 0000000000000001 R09: 00000000000000000 R 10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658 R13: ffff9ee8116b4670 R14: 00000000000000246 R15: ffff9ee8116b4658 CS: 0010 DS: 0 ES: 0000 CR0: 0000000080050033 CR2: 00007f7bcc41a830 CR3: 000000007a612003 CR4: 00000000001706e0 Seguimiento de llamadas:  do_raw_spin_lock+0xc0/0xd0 _raw_spin_lock_irqsave + 0x95/0xa0 cdnsp_gadget_ep_queue.cold+0x88/0x107 [cdnsp_udc_pci] usb_ep_queue+0x35/0x110 eth_start_xmit+0x220/0x3d0 [u_ether] ncm_tx_timeout+0x34/0x40 [usb_f_ncm] ? ncm_free_inst+0x50/0x50 [usb_f_ncm] __hrtimer_run_queues+0xac/0x440 hrtimer_run_softirq+0x8c/0xb0 __do_softirq+0xcf/0x428 asm_call_irq_on_stack+0x12/0x20  +0x61/0x70 irq_exit_rcu+0xc1/0xd0 sysvec_apic_timer_interrupt+0x52/0xb0 asm_sysvec_apic_timer_interrupt+0x12 /0x20 RIP: 0010:do_raw_spin_trylock+0x18/0x40 RSP: 0018:ffffbc494138bda8 EFLAGS: 00000246 RAX: 00000000000000000 RBX: ffff9ee8116b4658 RCX: 0000000000000 000 RDX: 0000000000000001 RSI: 00000000000000000 RDI: ffff9ee8116b4658 RBP: ffffbc494138bda8 R08: 00000000000000001 R09: 0000000000000000 R10: ffff9ee8116b4670 R11 : 0000000000000000 R12: ffff9ee8116b4658 R13: ffff9ee8116b4670 R14: ffff9ee7b5c73d80 R15: ffff9ee8116b4000 _raw_spin_lock+0x3d/0x70 ? cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci] cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci] ? cdnsp_remove_request+0x1f0/0x1f0 [cdnsp_udc_pci] ? cdnsp_thread_irq_handler+0x5/0xa0 [cdnsp_udc_pci] ? irq_thread+0xa0/0x1c0 irq_thread_fn+0x28/0x60 irq_thread+0x105/0x1c0 ? __kthread_parkme+0x42/0x90 ? irq_forced_thread_fn+0x90/0x90? wake_threads_waitq+0x30/0x30? irq_thread_check_affinity+0xe0/0xe0 kthread+0x12a/0x160 ? kthread_park+0x90/0x90 ret_from_fork+0x22/0x30 La causa principal del problema es la instrucci\u00f3n spin_lock/spin_unlock en lugar de spin_lock_irqsave/spin_lock_irqrestore en la funci\u00f3n cdnsp_thread_irq_handler.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/usb/cdns3/cdnsp-ring.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3d82904559f4f5a2622db1b21de3edf2eded7664\",\"lessThan\":\"ae746b6f4ce619cf4032fd798a232b010907a397\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3d82904559f4f5a2622db1b21de3edf2eded7664\",\"lessThan\":\"a9aecef198faae3240921b707bc09b602e966fce\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/usb/cdns3/cdnsp-ring.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.12.11\",\"lessThanOrEqual\":\"5.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.13\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-05-29T18:57:26.202334Z\",\"id\":\"CVE-2021-47271\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.12\",\"versionEndExcluding\":\"5.12.11\",\"matchCriteriaId\":\"1D627DFB-1E6A-4B08-B68C-D123B4C3D04C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"96AC23B2-D46A-49D9-8203-8E1BEDCA8532\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"DA610E30-717C-4700-9F77-A3C9244F3BFD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"1ECD33F5-85BE-430B-8F86-8D7BD560311D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"CF351855-2437-4CF5-AD7C-BDFA51F27683\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a9aecef198faae3240921b707bc09b602e966fce\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ae746b6f4ce619cf4032fd798a232b010907a397\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a9aecef198faae3240921b707bc09b602e966fce\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ae746b6f4ce619cf4032fd798a232b010907a397\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T14:40:14+00:00",
      "cve": "CVE-2021-47271",
      "id": "CVE-2021-47271",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47271.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ae746b6f4ce619cf4032fd798a232b010907a397\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a9aecef198faae3240921b707bc09b602e966fce\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:32:08.126Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47271\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-29T18:57:26.202334Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-29T19:04:33.872Z\"}}], \"cna\": {\"title\": \"usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3d82904559f4\", \"lessThan\": \"ae746b6f4ce6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3d82904559f4\", \"lessThan\": \"a9aecef198fa\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/usb/cdns3/cdnsp-ring.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.12.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/usb/cdns3/cdnsp-ring.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ae746b6f4ce619cf4032fd798a232b010907a397\"}, {\"url\": \"https://git.kernel.org/stable/c/a9aecef198faae3240921b707bc09b602e966fce\"}], \"x_generator\": {\"engine\": \"bippy-9e1c9544281a\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nusb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler\\n\\nPatch fixes the following critical issue caused by deadlock which has been\\ndetected during testing NCM class:\\n\\nsmp: csd: Detected non-responsive CSD lock (#1) on CPU#0\\nsmp:     csd: CSD lock (#1) unresponsive.\\n....\\nRIP: 0010:native_queued_spin_lock_slowpath+0x61/0x1d0\\nRSP: 0018:ffffbc494011cde0 EFLAGS: 00000002\\nRAX: 0000000000000101 RBX: ffff9ee8116b4a68 RCX: 0000000000000000\\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9ee8116b4658\\nRBP: ffffbc494011cde0 R08: 0000000000000001 R09: 0000000000000000\\nR10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658\\nR13: ffff9ee8116b4670 R14: 0000000000000246 R15: ffff9ee8116b4658\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f7bcc41a830 CR3: 000000007a612003 CR4: 00000000001706e0\\nCall Trace:\\n \u003cIRQ\u003e\\n do_raw_spin_lock+0xc0/0xd0\\n _raw_spin_lock_irqsave+0x95/0xa0\\n cdnsp_gadget_ep_queue.cold+0x88/0x107 [cdnsp_udc_pci]\\n usb_ep_queue+0x35/0x110\\n eth_start_xmit+0x220/0x3d0 [u_ether]\\n ncm_tx_timeout+0x34/0x40 [usb_f_ncm]\\n ? ncm_free_inst+0x50/0x50 [usb_f_ncm]\\n __hrtimer_run_queues+0xac/0x440\\n hrtimer_run_softirq+0x8c/0xb0\\n __do_softirq+0xcf/0x428\\n asm_call_irq_on_stack+0x12/0x20\\n \u003c/IRQ\u003e\\n do_softirq_own_stack+0x61/0x70\\n irq_exit_rcu+0xc1/0xd0\\n sysvec_apic_timer_interrupt+0x52/0xb0\\n asm_sysvec_apic_timer_interrupt+0x12/0x20\\nRIP: 0010:do_raw_spin_trylock+0x18/0x40\\nRSP: 0018:ffffbc494138bda8 EFLAGS: 00000246\\nRAX: 0000000000000000 RBX: ffff9ee8116b4658 RCX: 0000000000000000\\nRDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9ee8116b4658\\nRBP: ffffbc494138bda8 R08: 0000000000000001 R09: 0000000000000000\\nR10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658\\nR13: ffff9ee8116b4670 R14: ffff9ee7b5c73d80 R15: ffff9ee8116b4000\\n _raw_spin_lock+0x3d/0x70\\n ? cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci]\\n cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci]\\n ? cdnsp_remove_request+0x1f0/0x1f0 [cdnsp_udc_pci]\\n ? cdnsp_thread_irq_handler+0x5/0xa0 [cdnsp_udc_pci]\\n ? irq_thread+0xa0/0x1c0\\n irq_thread_fn+0x28/0x60\\n irq_thread+0x105/0x1c0\\n ? __kthread_parkme+0x42/0x90\\n ? irq_forced_thread_fn+0x90/0x90\\n ? wake_threads_waitq+0x30/0x30\\n ? irq_thread_check_affinity+0xe0/0xe0\\n kthread+0x12a/0x160\\n ? kthread_park+0x90/0x90\\n ret_from_fork+0x22/0x30\\n\\nThe root cause of issue is spin_lock/spin_unlock instruction instead\\nspin_lock_irqsave/spin_lock_irqrestore in cdnsp_thread_irq_handler\\nfunction.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-11-04T12:02:42.598Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47271\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-11-04T17:52:44.467Z\", \"dateReserved\": \"2024-05-21T13:27:52.127Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T14:20:00.703Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.