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false, "value": "2025-05-04T07:17:47.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/14716", "record": "CVE-2021-47355", "field": "creation_timestamp", "uuid": "b0f48755-078e-4f20-8526-39535a4b9784", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2021-47355\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\natm: nicstar: Fix possible use-after-free in nicstar_cleanup()\n\nThis module's remove path calls del_timer(). However, that function\ndoes not wait until the timer handler finishes. This means that the\ntimer handler may still be running after the driver's remove function\nhas finished, which would result in a use-after-free.\n\nFix by calling del_timer_sync(), which makes sure the timer handler\nhas finished, and unable to re-schedule itself.\n\ud83d\udccf Published: 2024-05-21T14:35:58.434Z\n\ud83d\udccf Modified: 2025-05-04T07:09:14.989Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5\n2. https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51\n3. https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6\n4. https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba\n5. https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148\n6. https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785\n7. https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f\n8. 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"field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "exploit_publication": {"timestamp": "2025-05-04T07:17:47Z", "date_only": false, "value": "2025-05-04T07:17:47.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/14716", "record": "CVE-2021-47355", "field": "creation_timestamp", "uuid": "b0f48755-078e-4f20-8526-39535a4b9784", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2021-47355\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\natm: nicstar: Fix possible use-after-free in nicstar_cleanup()\n\nThis module's remove path calls del_timer(). However, that function\ndoes not wait until the timer handler finishes. This means that the\ntimer handler may still be running after the driver's remove function\nhas finished, which would result in a use-after-free.\n\nFix by calling del_timer_sync(), which makes sure the timer handler\nhas finished, and unable to re-schedule itself.\n\ud83d\udccf Published: 2024-05-21T14:35:58.434Z\n\ud83d\udccf Modified: 2025-05-04T07:09:14.989Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5\n2. https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51\n3. https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6\n4. https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba\n5. https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148\n6. https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785\n7. https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f\n8. https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706\n9. https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea", "url": "https://t.me/DarkWebInformer_CVEAlerts/14716", "metric_role": "exploit_publication", "metric_basis": "sighting_report"}, "exploitation": null, "patch": null}, "vendor_response_time": {"available": false, "missing": ["start", "end"]}, "time_to_exploit": {"available": false, "missing": ["end"]}, "disclosure_to_exploit": {"available": false, "missing": ["end"]}, "disclosure_to_exploit_publication": {"available": true, "seconds": 30040908.566, "hours": 8344.69682388889, "days": 347.6957009953704, "min_seconds": 30040908.566, "max_seconds": 30040908.566, "approximate": false, "ongoing": false, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2024-05-21T14:35:58.434Z", "date_only": false, "value": "2024-05-21T14:35:58.434Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2021-47355", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "end": {"timestamp": "2025-05-04T07:17:47Z", "date_only": false, "value": "2025-05-04T07:17:47.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/14716", "record": "CVE-2021-47355", "field": "creation_timestamp", "uuid": "b0f48755-078e-4f20-8526-39535a4b9784", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2021-47355\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\natm: nicstar: Fix possible use-after-free in nicstar_cleanup()\n\nThis module's remove path calls del_timer(). However, that function\ndoes not wait until the timer handler finishes. This means that the\ntimer handler may still be running after the driver's remove function\nhas finished, which would result in a use-after-free.\n\nFix by calling del_timer_sync(), which makes sure the timer handler\nhas finished, and unable to re-schedule itself.\n\ud83d\udccf Published: 2024-05-21T14:35:58.434Z\n\ud83d\udccf Modified: 2025-05-04T07:09:14.989Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5\n2. https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51\n3. https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6\n4. https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba\n5. https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148\n6. https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785\n7. https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f\n8. https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706\n9. https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea", "url": "https://t.me/DarkWebInformer_CVEAlerts/14716", "metric_role": "exploit_publication", "metric_basis": "sighting_report"}}, "time_to_patch": {"available": false, "missing": ["start", "end"]}, "total_time_to_patch": {"available": false, "missing": ["start", "end"]}, "disclosure_to_patch": {"available": false, "missing": ["end"]}, "time_unpatched": {"available": true, "seconds": 77122774.474312, "hours": 21422.992909531113, "days": 892.6247045637964, "min_seconds": 77122774.474312, "max_seconds": 77122774.474312, "approximate": false, "ongoing": true, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2024-05-21T14:35:58.434Z", "date_only": false, "value": "2024-05-21T14:35:58.434Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2021-47355", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "end": {"timestamp": "2026-10-31T05:35:32.908Z", "date_only": false, "label": "As of", "source": "Calculation clock"}}, "exploitation_to_patch": {"available": false, "missing": ["start"]}, "exploit_publication_to_patch": {"available": true, "seconds": 47081865.908312, "hours": 13078.296085642221, "days": 544.929003568426, "min_seconds": 47081865.908312, "max_seconds": 47081865.908312, "approximate": false, "ongoing": true, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2025-05-04T07:17:47Z", "date_only": false, "value": "2025-05-04T07:17:47.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/14716", "record": "CVE-2021-47355", "field": "creation_timestamp", "uuid": "b0f48755-078e-4f20-8526-39535a4b9784", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2021-47355\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\natm: nicstar: Fix possible use-after-free in nicstar_cleanup()\n\nThis module's remove path calls del_timer(). However, that function\ndoes not wait until the timer handler finishes. This means that the\ntimer handler may still be running after the driver's remove function\nhas finished, which would result in a use-after-free.\n\nFix by calling del_timer_sync(), which makes sure the timer handler\nhas finished, and unable to re-schedule itself.\n\ud83d\udccf Published: 2024-05-21T14:35:58.434Z\n\ud83d\udccf Modified: 2025-05-04T07:09:14.989Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5\n2. https://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51\n3. https://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6\n4. https://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba\n5. https://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148\n6. https://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785\n7. https://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f\n8. https://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706\n9. https://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea", "url": "https://t.me/DarkWebInformer_CVEAlerts/14716", "metric_role": "exploit_publication", "metric_basis": "sighting_report"}, "end": {"timestamp": "2026-10-31T05:35:32.908Z", "date_only": false, "label": "As of", "source": "Calculation clock"}}}}